Reference Specimens
The Jan Buma Collections

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Photos by Fabre Minerals. Under Creative Commons license

This page provides a selection of the specimens from the Jan Buma collection that have passed through the Fabre Minerals website and, due to their quality,
rarity, or significance as specimens from interesting locations, have been preserved as reference specimens in #MVM


Jan Buma, apart from being a great person, is a Dutch mineral collector who is very well known at most of the European shows since for many years he has attended them with great dedication. At these shows he bought a large number of specimens, initially all types of worldwide minerals, and then only in the three key areas of his collection: Fluorite, Rumania, Indian Zeolites and related species.

I have kept up a long friendship with Jan, which started many years ago at a Munich show. Back then I sold him one of the first specimens from the Emilio Mine, which caught his attention as it was a new locality at that time. Since then we have always kept in touch and done regular deals. So, when he sold his worldwide collection of minerals I had the opportunity and good luck of buying it. Some time later Jan decided to concentrate on an even more select range of minerals: just one, in fact - Fluorite. So he then sold his collection of Indian Zeolites and Rumanian specimens. Once again I was lucky enough to have the chance of buying his collection of Indian minerals.

THE FLUORITE COLLECTION

In 2004 Jan Buma decided to concentrate on only high quality Fluorite specimens, so he decided to sell off most of his Fluorites, keeping just a select few. Jan decided to separate the Fluorites he had for sale into two groups: ones that were easier to sell, as the specimens were relatively cheap and they were of interest because of the localities they came from; the second were the better specimens, in which the range of locations and the good quality were both noteworthy. At the end of 2010, Jan Buma, after having built yet another excellent collection of Fluorite, decided to sell his entire collection, including his best pieces.

Both the quality of the specimens, and the range of localities makes this a really interesting collection. Each specimen is very well documented, as it comes with a record on which Jan noted details of the mineral, the locality, when he bought it, who he bought if from, and how much he paid.

We hope that you enjoy these specimens from the Jan Buma Collection as much as we have enjoyed them.

Jordi Fabre


FSU

Fluorite with smoky Quartz, Mica, Pyrite and Ferberite
Fluorite with smoky Quartz, Mica, Pyrite and Ferberite. Front
Front
Fluorite with smoky Quartz, Mica, Pyrite and Ferberite. Side
Side
Fluorite with smoky Quartz, Mica, Pyrite and Ferberite. Top
Top
 

FB76J7: Group of bluish octahedral crystals of very well defined faces and edges, on a smoky Quartz crystal partially covered by small crystals of Pyrite and Muscovite and with some small black crystals of Ferberite.
Kara-Oba, Betpak-Dala (Bet-Pak-Dala) Desert, Karaganda Region  Kazakhstan (±1992)

Specimen size: 10.1 × 4.9 × 4.1 cm = 3.98” × 1.93” × 1.61”

Main crystal size: 2.4 × 2 cm = 0.94” × 0.79”

Former Jan Buma collection. Number 920302
Octahedral Fluorite with Ferberite, Quartz and Pyrite
 

FY86K9: Group of green octahedron Fluorite crystals, well defined, on a rich Ferberite, Pyrite and Quartz crystal matrix.
Kara-Oba, Betpak-Dala (Bet-Pak-Dala) Desert, Karaganda Region  Kazakhstan (±1975)

Specimen size: 6.1 × 5 × 4.8 cm = 2.40” × 1.97” × 1.89”

Main crystal size: 3.7 × 3.5 cm = 1.46” × 1.38”

Intense fluorescence short UV & fluorescent long UV

Former Jan Buma collection. Number 041203
Octahedral Fluorite with Ferberite, Quartz and Pyrite. Front
Front
Octahedral Fluorite with Ferberite, Quartz and Pyrite. Side
Side
Ferberite with Fluorite and Pyrite
Ferberite with Fluorite and Pyrite.
Ferberite with Fluorite and Pyrite.
 

FD13G0: These Ferberite crystals form a very curious growth in contrast with the matrix of bright Pyrite cubes covering a wide part of the back of the sample. On the Ferberite little Fluorite crystals can be seen.
Kara-Oba, Betpak-Dala (Bet-Pak-Dala) Desert, Karaganda Region  Kazakhstan (±1993)

Specimen size: 5.6 × 5 × 1.7 cm = 2.20” × 1.97” × 0.67”

Former Jan Buma collection. Number 930913

Fluorite fluorescent long & short UV
Octahedral Fluorite with Pyrite and Sphalerite
 

FB86F9: The crystal is forming a complex growth in two different phases. In the first one the major octahedron formed and then on the octahedron vertices, smaller Fluorite crystals with dodecahedrons grew. Sphalerite and cubes of Pyrite form a perfect base to the sample. The Fluorite has good color and transparency and the referenced locality has become a classic.
Kara-Oba, Betpak-Dala (Bet-Pak-Dala) Desert, Karaganda Region  Kazakhstan (±1995)

Specimen size: 3.9 × 3.5 × 2.7 cm = 1.54” × 1.38” × 1.06”

Main crystal size: 2.9 × 2.6 cm = 1.14” × 1.02”

Former Jan Buma collection. Number 950303
Octahedral Fluorite with Pyrite and Sphalerite.
Fluorite on Quartz
Fluorite on Quartz.
Fluorite on Quartz.
 

FK13F7: An almost unheard of locality for Fluorite. On the Quartz there are numerous octahedra of nicely colored, luminous green Fluorite. The Quartz is slightly smoky and has darker growth phantoms within it.
Kent, Karaganda Oblast  Kazakhstan (±2003)

Specimen size: 5.8 × 4.5 × 4.7 cm = 2.28” × 1.77” × 1.85”

Main crystal size: 0.3 × 0.2 cm = 0.12” × 0.08”

Former Jan Buma collection. Number 030409
Fluorite with Stibnite
 

FV76F7: Very special. The fine crystals of Stibnite form the base and between them there is a first generation of lilac stalactitic Fluorite and a second generation of lighter colored cubic crystals.
Kadamzhay Mine, Fergana Valley, Alai Range, Osh Oblast  Kyrgyzstan (±1999)

Specimen size: 7.5 × 5 × 3 cm = 2.95” × 1.97” × 1.18”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 990616
Fluorite with Stibnite. Front
Front
Fluorite with Stibnite. Rear
Rear
Fluorite with Stibnite.
Fluorite with Calcite
Fluorite with Calcite.
 

FG13H5: Green crystals show combined faces of cube and octahedron, partially covered by rhombohedral crystals of white Calcite. The locality is very uncommon for representative samples of Fluorite.
Bykov (Bikov), Sakhalin Oblast  Russia (±2002)

Specimen size: 8 × 5 × 3.8 cm = 3.15” × 1.97” × 1.50”

Main crystal size: 4 × 4 cm = 1.57” × 1.57”

Intense fluorescence short UV & fluorescent long UV

Former Jan Buma collection. Number 020872
Fluorite with Calcite
 

FE76H0: The sample has a deep green color. Its crystallography is complex, combining the faces of the cube and octahedron with a silky aspect. The front face is spotted by little crystals of Calcite, bigger on the matrix, and giving a pleasant contrast to the piece.
First Sovetskii Mine, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai  Russia (±2005)

Specimen size: 6.3 × 5.4 × 4.1 cm = 2.48” × 2.13” × 1.61”

Main crystal size: 5.4 × 5.2 cm = 2.13” × 2.05”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 050304
Fluorite with Calcite.
Fluorite with Quartz
Fluorite with Quartz.
Fluorite with Quartz.
 

FH99H0: The transparent crystals have a high quality. Their position, very aerial, on the white matrix of small Quartz crystals, is especially good. A fine and esthetic piece.
Second Sovetskii Mine, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai  Russia (±2001)

Specimen size: 7.2 × 5.9 × 4.3 cm = 2.83” × 2.32” × 1.69”

Main crystal size: 3 × 2.7 cm = 1.18” × 1.06”

Fluorescent long & short UV

Former Jan Buma collection. Number 010671
Octahedral Fluorite with Galena and Siderite
 

FA53L3: Excellent group of three Fluorite octahedrons (uncommon in the deposit) showing a very aerial position, two of them dominant. Crystals show very sharp faces and edges, totally clear, on a matrix formed by cubic Galena crystals covered by Siderite.
We will send the handwritten label , from Jan Buma collection, to the buyer of this esthetic specimen.
Second Sovetskii Mine, 230↓, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai  Russia (09/1996)

Specimen size: 5.3 × 3.9 × 3.5 cm = 2.09” × 1.54” × 1.38”

Main crystal size: 2.5 × 2.5 cm = 0.98” × 0.98”

Former Jan Buma collection. Number 971209
Octahedral Fluorite with Galena and Siderite. Front
Front
Octahedral Fluorite with Galena and Siderite. Top
Top
Octahedral Fluorite with Galena and Siderite.

Morocco

Fluorite on Quartz (variety amethyst)
Fluorite on Quartz (variety amethyst).
Fluorite on Quartz (variety amethyst).
 

FB47F7: Gentle colors. The crystals of Quartz have growth phantoms that are more violet, and also inclusions of Chalcopyrite. Among the Quartz there are some crystals of yellow Fluorite, which give a neat and gentle contrast. While the Jan Buma label says that this comes from El Hammam, we think it must be from Aouli even though it is different from the latest material we have seen from that locality.
Aouli, Mibladen mining district, Mibladen, Midelt, Midelt Province, Drâa-Tafilalet Region  Morocco (±2002)

Specimen size: 10 × 8 × 6 cm = 3.94” × 3.15” × 2.36”

Main crystal size: 0.9 × 0.8 cm = 0.35” × 0.31”

Intense fluorescence long & short UV

Former Jan Buma collection. Number 020104
Fluorite on Dolomite
 

FA58F7: A very elegant example and different from the ones we normally see from Aouli. On a bed of small crystals of Dolomite there is a group of very well defined crystals of yellow Fluorite, which have contrasting zones of violet. An exceptional specimen for the locality, as Herb Obodda must have known - it was in his collection with label number 459, we will send to a buyer a copy of our analysis of the specimen.
Aouli, Mibladen mining district, Mibladen, Midelt, Midelt Province, Drâa-Tafilalet Region  Morocco

Specimen size: 11 × 8.3 × 5.3 cm = 4.33” × 3.27” × 2.09”

Main crystal size: 1.5 × 1.5 cm = 0.59” × 0.59”

Intense fluorescence long & short UV

Former Jan Buma collection. Number 010102
Fluorite on Dolomite.
Fluorite on Dolomite.

Africa

Fluorite
Fluorite.
 

FG63F5: The thing that attracted me to this floater is the strange (and unusual for this locality) color zoning that is between orange and violet, as well as the uneven thickness of the crystals, which makes them look tabular.
Okorusu Mine, Otjiwarongo District, Otjozondjupa Region  Namibia (±1997)

Specimen size: 5.5 × 4.5 × 2.5 cm = 2.17” × 1.77” × 0.98”

Main crystal size: 1.9 × 1.5 cm = 0.75” × 0.59”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 970904
Fluorite with Feldspar
 

FD16AA9: Very aerial aggregate of cubic crystals truncated by octahedral faces. They are transparent, and bright, have a very intense green color and are on matrix.
Erongo Mountain, Usakos, Erongo Region  Namibia (±2005)

Specimen size: 5.8 × 4.1 × 2.1 cm = 2.28” × 1.61” × 0.83”

Main crystal size: 1 × 1 cm = 0.39” × 0.39”

Former Jan Buma collection. Number 051201
Fluorite with Feldspar. Fluorite with Feldspar.
Fluorite on Schorl
Fluorite on Schorl. Fluorite on Schorl.
 

FA6G6: The crystallization of this Schorl features acicular forms and, just with the green Fluorite crystals, the mélange of the two minerals is a nice contrast. The crystals of Fluorite have a complex form.
Davib East Farm 61 (Davib Ost Farm), Karibib District, Erongo Region  Namibia (12/2001)

Specimen size: 8 × 3.7 × 2.9 cm = 3.15” × 1.46” × 1.14”

Main crystal size: (Fluorite) 0.6 × 0.6 cm = 0.00” × 0.24”

Fluorescent long & short UV

Former Jan Buma collection. Number 021025
Octahedral Fluorite with Quartz
 

FF27AC3: Aggregate, on matrix, of very sharp octahedral Fluorite crystals that are translucent, have an intense and very uniform green color and are on a group of Quartz crystals with simple forms, and with very well defined phantom growths. The sample was in the Jan Buma collection who’s catalog card we’ll send to the buyer.
This sample has been referenced and pictured, as a novelty in Ste. Marie 2005, in the magazine 'Le Règne Minéral' number 64, page 12
Riemvasmaak, Orange river area, Kakamas, ZF Mgcawu District, Northern Cape Province  South Africa (±2005)

Specimen size: 5.7 × 5.5 × 3.9 cm = 2.24” × 2.17” × 1.54”

Main crystal size: 3.1 × 3 cm = 1.22” × 1.18”

Fluorescent long & short UV

Former Jan Buma collection. Number 050606
Octahedral Fluorite with Quartz. Octahedral Fluorite with Quartz.
Fluorite
Fluorite. Fluorite.
 

MG56R9: Group of octahedral crystals with very well defined faces and edges. They are translucent and bright and have an intense and uniform green color.
Riemvasmaak, Orange river area, Kakamas, ZF Mgcawu District, Northern Cape Province  South Africa (±2007)

Specimen size: 7 × 5.6 × 3.1 cm = 2.76” × 2.20” × 1.22”

Main crystal size: 2.4 × 2.2 cm = 0.94” × 0.87”

Former Jan Buma collection. Number 070904

South America

Fluorite with Quartz
 

FG9K4: Sharp, yellow cubic crystals of perfectly defined faces and edges on a matrix of microcrystalline Quartz. The locality is very uncommon.
El Portezuelo, Sierra de Ascasti, Catamarca  Argentina (±2003)

Specimen size: 4.8 × 2.7 × 2.3 cm = 1.89” × 1.06” × 0.91”

Main crystal size: 1.3 × 1.3 cm = 0.51” × 0.51”

Fluorescent long & short UV

Former Jan Buma collection. Number 030207
Fluorite with Quartz.
Fluorite with Quartz.
Fluorite with smoky Quartz, Orthoclase and Hematite
Fluorite with smoky Quartz, Orthoclase and Hematite.
 

FH64H5: Surprising is the uncommon paragenesis on the sample with cubic crystals of Fluorite coexisting with a matrix of Smoky Quartz, prisms of Orthoclase and small crystals of Hematite. We also call attention on the locality where Fluorite is not common.
Formación Papachacra, Departamento Belén, Catamarca  Argentina (±2004)

Specimen size: 5 × 4.8 × 3.5 cm = 1.97” × 1.89” × 1.38”

Main crystal size: 1.9 × 1.8 cm = 0.75” × 0.71”

Fluorescence short UV & minor fluorescence long UV

Former Jan Buma collection. Number 040509
Octahedral Fluorite with Quartz
 

FL14K9: Intense green octahedral crystals on an attractive snowy white Quartz crystal matrix.
Amana, Formación Papachacra, Belén, Catamarca  Argentina (±2004)

Specimen size: 6.7 × 4.9 × 2.5 cm = 2.64” × 1.93” × 0.98”

Main crystal size: 1.5 × 1.4 cm = 0.59” × 0.55”

Fluorescent long & short UV

Former Jan Buma collection. Number 040514
Octahedral Fluorite with Quartz. Octahedral Fluorite with Quartz.
Fluorite with Quartz and Microcline
Fluorite with Quartz and Microcline. Fluorite with Quartz and Microcline.
 

FF61M2: Cuboctahedral crystals with slight coloring on faces and clearly zoned with a deep violet color on edges and vertices. Fluorite crystals are on an Orthoclase (adularia) and smoky Quartz matrix.
The specimen's photo has been reviewed and published in the magazine ‘Rocks & Minerals’ on page 139 in the volume 88, number 2, Mar/Apr 2013
Formación Papachacra, Belén, Catamarca  Argentina (±2004)

Specimen size: 7.3 × 5.7 × 4.1 cm = 2.87” × 2.24” × 1.61”

Main crystal size: 0.8 × 0.8 cm = 0.31” × 0.31”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 040906
Rhodochrosite with Fluorite
 

FF67K0: Very uncommon association of Rhodochrosite and Fluorite crystals. The Rhodochrosite forms multiple crystals while the Fluorite crystals are rounded and poorly defined with rough surfaces due to complex crystallization.
Uchucchacua Mine, Oyón Province, Lima Department  Peru (±2002)

Specimen size: 6.3 × 4.8 × 2.4 cm = 2.48” × 1.89” × 0.94”

Main crystal size: 1.3 × 1 cm = 0.51” × 0.39”

Former Jan Buma collection. Number 020638
Rhodochrosite with Fluorite. Rhodochrosite with Fluorite.
Octahedral Fluorite with Pyrite
Octahedral Fluorite with Pyrite.
 

FC76F5: Apart from the fact that it is octahedral, the pink color is great throughout all of it except for the green heart. A small amount of matrix and Pyrite adds to it.
Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru

Specimen size: 3.3 × 3 × 3.2 cm = 1.30” × 1.18” × 1.26”

Fluorescent long & short UV

Former Jan Buma collection. Number 010625
Fluorite with Cookeite
 

FX64M0: Complex Fluorite crystals with dominant cube and octahedron shapes. Crystals are transparent and show a color zoning, green in the inner core and slightly violet on the edges. According to the label, the Fluorite is accompanied by Cookeite, although we have not analyzed it.
Huanzala Mine, Huallanca District, Dos de Mayo Province, Huánuco Department  Peru (±1992)

Specimen size: 9.3 × 7 × 5.8 cm = 3.66” × 2.76” × 2.28”

Main crystal size: 1.1 × 1.1 cm = 0.43” × 0.43”

Fluorescent long & short UV

Former Jan Buma collection. Number 921209
Fluorite with Cookeite.
Fluorite with Cookeite.
Hübnerite with Fluorite
Hübnerite with Fluorite. Hübnerite with Fluorite.
 

FZ46I7: Parallel growth of very bright prismatic crystals on a matrix of white crystals of Quartz. On some of the Hübnerite crystals there are small crystals of Fluorite, blue, transparent and very rich in faces. The sample is with two labels, one from Hamel Mining and Minerals, Los Angeles, and the other from the Scott J. Williams collection.
Huayllapon Mine (Huallapon Mine), Pasto Bueno, Pampas District, Pallasca Province, Ancash Department  Peru

Specimen size: 7 × 5 × 3.3 cm = 2.76” × 1.97” × 1.30”

Main crystal size: 3.5 × 1 cm = 1.38” × 0.39”

Fluorite extremely fluorescent long & short UV

Former Jan Buma collection. Number 050113
Chalcopyrite with Quartz and Fluorite
 

FD46M2: Excellent Chalcopyrite specimen with a huge size and a well defined twin, on a matrix of coloredless octahedral Fluorite crystals accompanied by Quartz, and a little Sphalerite and Galena on the back side.
Alimon Mine (Animon Mine), Huaron mining district, Huayllay District, Pasco Province, Pasco Department  Peru (±2001)

Specimen size: 8.7 × 6.5 × 6.4 cm = 3.43” × 2.56” × 2.52”

Main crystal size: 2.4 × 2.3 cm = 0.94” × 0.91”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 010205
Chalcopyrite with Quartz and Fluorite. Chalcopyrite with Quartz and Fluorite.
Fluorite with Brazilianite and Albite
Fluorite with Brazilianite and Albite. Fluorite with Brazilianite and Albite.
 

FD76K9: Another of the unusual parageneses to which we are accustomed from the collection of Jan Buma. Beveled cubic crystals on Brazilianite and elongated crystals of white Albite.
Linopolis, Divino das Laranjeiras, Minas Gerais  Brazil

Specimen size: 7.7 × 5.8 × 3.6 cm = 3.03” × 2.28” × 1.42”

Main crystal size: 0.9 × 0.8 cm = 0.35” × 0.31”

Fluorescence short UV & minor fluorescence long UV

Former Jan Buma collection. Number 050503

China

Fluorite with Quartz
 

FK64M0: Fluorite octahedral crystals, one of them dominant, with an intense and vivid color, with small darker crystals with Quartz. On matrix.
Xianghuapu Mine, Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province  China (±2003)

Specimen size: 6.6 × 5.3 × 4.7 cm = 2.60” × 2.09” × 1.85”

Main crystal size: 3.3 × 3 cm = 1.30” × 1.18”

Former Jan Buma collection. Number 031015
Fluorite with Quartz. Front
Front
Fluorite with Quartz. Side
Side
Fluorite
Fluorite.
Fluorite.
 

FB6F7: Cubes of Fluorite that have grown into each other. Green is dominant but within them there are growth phantoms that are white or even a bit purple. It is a floater.
Xianghuapu Mine, Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province  China (±2002)

Specimen size: 14 × 6.5 × 4.3 cm = 5.51” × 2.56” × 1.69”

Main crystal size: 3 × 2.5 cm = 1.18” × 0.98”

Fluorescent long & short UV

Former Jan Buma collection. Number 021031
Fluorite with Quartz
 

FT96M3: Very esthetic group of transparent Fluorite cubic crystals, with an excellent brilliance and intense light green color. On a Quartz crystal matrix.
We’ll send the Jan Buma collection card to the buyer.
Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province  China (±2002)

Specimen size: 14.2 × 8.4 × 5.5 cm = 5.59” × 3.31” × 2.17”

Main crystal size: 2.3 × 2.2 cm = 0.91” × 0.87”

Fluorescent long & short UV

Former Jan Buma collection. Number 020701
Fluorite with Quartz. Fluorite with Quartz.
Fluorite
Fluorite.
Fluorite. Fluorite.
 

FB76S5: On the sample three generations if crystals coexist. The first one, octahedral, shows very well defined faces and edges and it is dark green. The second, also octahedral, is intense clear green, and the last shows small cubic crystals, colorless and bright.
Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province  China (±2003)

Specimen size: 8.2 × 5.4 × 4.7 cm = 3.23” × 2.13” × 1.85”

Main crystal size: 1.8 × 1.8 cm = 0.71” × 0.71”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 030403
Octahedral Fluorite
 

FF16F5: Two octahedral Fluorites that hug each other. Their surfaces are complex as they have numerous small faces that give them a sugary look. They are a light green color.
Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province  China (±1997)

Specimen size: 6.2 × 5.3 × 3.3 cm = 2.44” × 2.09” × 1.30”

Main crystal size: 4 × 3.7 cm = 1.57” × 1.46”

Former Jan Buma collection. Number 970920
Octahedral Fluorite.
Fluorite
Fluorite.
Fluorite.
 

FE58F7: Many Fluorites have neat colors but this one really is impressive. The color is very intense and the crystals are very transparent, so you can see the matrix through them. The cubes are quite large and well placed on the matrix. A great one.
Xianghualing Sn-polymetallic ore field, Linwu, Chenzhou Prefecture, Hunan Province  China (±2003)

Specimen size: 9 × 8.5 × 7.5 cm = 3.54” × 3.35” × 2.95”

Main crystal size: 3.3 × 2.9 cm = 1.30” × 1.14”

Former Jan Buma collection. Number 030621
Fluorite with Calcite
 

FA57F7: A contrast of color and forms. I think that the way the Calcite has crystallized is original, with white, lenticular crystals that have grown like mushrooms. Between them there are cubes of intensely lilac Fluorite with modified edges.
Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan Province  China (±2002)

Specimen size: 10.5 × 7 × 5 cm = 4.13” × 2.76” × 1.97”

Main crystal size: 1.2 × 0.9 cm = 0.47” × 0.35”

Calcite fluorescent long & short UV

Former Jan Buma collection. Number 021091
Fluorite with Calcite.
Fluorite with Calcite.
Fluorite with Dolomite
Fluorite with Dolomite. Fluorite with Dolomite.
 

FR56M3: Transparent Fluorite crystals with dominant octahedron and cube, and with phantom figures of an intense violet color, on a matrix layered by small white Dolomite crystals.
The specimen is from Jan Buma collection and we’ll send the collection card to the buyer.
This specimen's photo has been reviewed and published in the magazine ‘Mineralogical Record’ on page 593 in the volume 43, number 5.
Shangbao Mine, Leiyang, Hengyang Prefecture, Hunan Province  China (±2002)

Specimen size: 9.7 × 9.4 × 4.2 cm = 3.82” × 3.70” × 1.65”

Main crystal size: 2.5 × 2.3 cm = 0.98” × 0.91”

Former Jan Buma collection. Number 020613
Fluorite on Baryte
 

FB6H5: Crystals, transparent and slightly green, are cubes forming growths on the edges. We stress the excellent esthetics of the sample intensified by a matrix of white tabular crystals of Baryte.
Taolin Mine, Linxiang, Yueyang Prefecture, Hunan Province  China (±2002)

Specimen size: 11.9 × 10.1 × 6 cm = 4.69” × 3.98” × 2.36”

Main crystal size: 1.3 × 1.3 cm = 0.51” × 0.51”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 020605
Fluorite on Baryte.
Fluorite on Baryte.
Fluorite with Quartz, Sphalerite and Chalcopyrite
Fluorite with Quartz, Sphalerite and Chalcopyrite.
Fluorite with Quartz, Sphalerite and Chalcopyrite.
 

FK76J5: Group of cubic crystals with multiple growth, extraordinarily transparent and with zones of color between uncolored and green. Fluorite is on a matrix of crystals of white Quartz.
The specimen is from Jan Buma collection and we’ll send the collection card to the buyer of the sample.
Taolin Mine, Linxiang, Yueyang Prefecture, Hunan Province  China (±2000)

Specimen size: 10.7 × 8 × 5.8 cm = 4.21” × 3.15” × 2.28”

Main crystal size: 1.8 × 1.7 cm = 0.71” × 0.67”

Fluorescent long & short UV

Former Jan Buma collection. Number 010675
Fluorite with Quartz
 

FH76H5: The transparency of the cubic crystal shows a marked zonation of color, distributed following the cleavage planes, corresponding to octahedron faces, and not in the direction of the edges as is usual. In the center of the crystal the higher intensity of color has a mossy appearance. Matrix is a fine and elegant bed of prismatic crystals of Quartz.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (±2002)

Specimen size: 10 × 7.3 × 2 cm = 3.94” × 2.87” × 0.79”

Main crystal size: 1.6 × 1.6 cm = 0.63” × 0.63”

Former Jan Buma collection. Number 020611
Fluorite with Quartz.
Fluorite with Quartz.
Sphalerite with Quartz, Fluorite and Chalcopyrite
Sphalerite with Quartz, Fluorite and Chalcopyrite.
 

FE16G6: A wall of Quartz crystals with some curious and recrystallized tips giving shelter to rounded Sphalerite. Jan Buma, on his record card, gives the mineral as Stannite. We had doubts, so we analyzed them and the result was they really are Sphalerite. We also emphasize the cubic crystals of Fluorite on the piece - nearly uncolored but with little brush-strokes of intense blue.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (±2003)

Specimen size: 8.4 × 6.5 × 7 cm = 3.31” × 2.56” × 2.76”

Main crystal size: (Sphalerite) 1.9 × 1.6 cm = 0.00” × 0.63”

Fluorite fluorescent long & short UV

Former Jan Buma collection. Number 031013
Fluorite with Quartz
 

MH36R9: Cubic crystals, one of them clearly dominant, of extraordinary transparency and luster and sky blue color, on a Quartz matrix.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (±2007)

Specimen size: 4.9 × 2.3 × 2.6 cm = 1.93” × 0.91” × 1.02”

Main crystal size: 1 × 0.9 cm = 0.39” × 0.35”

Former Jan Buma collection. Number 070204
Fluorite with Quartz.
Fluorite with Quartz. Fluorite with Quartz.
Fluorite with Quartz and inclusions
Fluorite with Quartz and inclusions. Front
Front
Fluorite with Quartz and inclusions. Top
Top
 

MA86T1: Group of transparent cubic crystals with very sharp faces and edges, intense blue color and violet reflections and with white microcrystalline inclusions. Their matrix is a group of Quartz crystals some of them doubly terminated.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (±2007)

Specimen size: 6.4 × 3.9 × 3.8 cm = 2.52” × 1.54” × 1.50”

Main crystal size: 3.4 × 2.9 cm = 1.34” × 1.14”

Fluorescent long UV & minor fluorescence short UV

Former Jan Buma collection. Number 070906
Fluorite with Quartz, Pyrite and Mica
 

FT50F6: The crystal is complex, as it combines the basic octahedral with cubic steps creating an Aztec pyramid. Especially notable for the color zoning, light blue in its center and strongly violet on the edges of the cubic faces. The position of the crystal on the matrix of Quartz, Pyrite and Mica make this one really esthetic.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (1999)

Specimen size: 7.3 × 6.3 × 6.3 cm = 2.87” × 2.48” × 2.48”

Former Jan Buma collection. Number 990633
Fluorite with Quartz, Pyrite and Mica. Front
Front
Fluorite with Quartz, Pyrite and Mica. Side
Side
Fluorite with Quartz, Pyrite and Mica. Top
Top
Fluorite with Dolomite, Muscovite and Quartz
Fluorite with Dolomite, Muscovite and Quartz. Front
Front
Fluorite with Dolomite, Muscovite and Quartz. Top
Top
 

MK50R9: Octahedral crystal with the so called "Aztec pyramid" echeloned growth. It is transparent, has a uniform deep violet color and is on a Quartz matrix, with Dolomite and Muscovite.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (2002)

Specimen size: 8.9 × 5.5 × 4.6 cm = 3.50” × 2.17” × 1.81”

Main crystal size: 5.6 × 5.4 cm = 2.20” × 2.13”

Former Jan Buma collection. Number 041202
Octahedral Fluorite with Quartz, Ferberite and Muscovite
 

FB66G6: The crystal of Fluorite were determined to grow just in the middle, and they did. Between the Quartz and the matrix is possible to distinguish, tenaciously growing, the faces of the Fluorite octahedron and cube with marked bluish zones. The matrix is a tapestry of different crystals which give life to the piece.
The specimen has been published in the book 'China', by Berthold Ottens, on page 455.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (±2002)

Specimen size: 11 × 5.5 × 6.5 cm = 4.33” × 2.17” × 2.56”

Main crystal size: 2.9 × 2.5 cm = 1.14” × 0.98”

Former Jan Buma collection. Number 020612
Octahedral Fluorite with Quartz, Ferberite and Muscovite.
Octahedral Fluorite with Quartz, Ferberite and Muscovite.
Fluorite with Rhodochrosite and Quartz
Fluorite with Rhodochrosite and Quartz.
Fluorite with Rhodochrosite and Quartz.
 

FZ6F7: A three way color contrast: Fluorite, Quartz and Rhodochrosite. The Fluorite has formed cubes that have parallel growth on the faces and a leafy look, and the Rhodochrosite has a very special color and form.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (±2003)

Specimen size: 10.8 × 8.5 × 5 cm = 4.25” × 3.35” × 1.97”

Main crystal size: 2 × 2 cm = 0.79” × 0.79”

Fluorescent long & short UV

Former Jan Buma collection. Number 031017
Fluorite with Ferberite, Calcite and Quartz
 

MT67T3: Very well defined and partially doubly terminated crystal of Ferberite almost completely coated by clear lilac and transparent cubic crystals of Fluorite with uniaxial growths of white lenticular crystals of Calcite and crystals of Quartz.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (±2003)

Specimen size: 10.4 × 7.7 × 3.3 cm = 4.09” × 3.03” × 1.30”

Main crystal size: 1 × 0.8 cm = 0.39” × 0.31”

Fluorescence short UV & minor fluorescence long UV

Former Jan Buma collection. Number 030624
Fluorite with Ferberite, Calcite and Quartz. Front
Front
Fluorite with Ferberite, Calcite and Quartz. Side
Side
Fluorite with Ferberite, Calcite and Quartz. Side
Side
"Phantom" Quartz with Chalcopyrite, Cassiterite and Arsenopyrite

Front

Rear
 

FM36AA6: Transparent Quartz crystal with a very sharp phantom, its back side partially coated by Dolomite and by Cassiterite microcrystals, with Arsenopyrite and a group of very sharp and bright Chalcopyrite crystals. From the Jan Buma collection, and a rarity for Yaogangxian in that there is no Fluorite on the specimen!
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China

Specimen size: 6.1 × 3.1 × 3.1 cm = 2.40” × 1.22” × 1.22”

Main crystal size: 0.9 × 0.6 cm = 0.35” × 0.24”

Former collection of Jan Buma
Fluorite with Creedite
 

FV63H5: Different than the Mexican Creedites, Chinese crystals, rare on the market, are absolutely uncolored and perfectly transparent. Prisms have exceptional luster and they grow on radial groups on a matrix of cubic crystals of Fluorite.
Qinglong Mine, Dachang, Qinglong, Qianxi'nan Autonomous Prefecture, Guizhou Province  China (±2004)

Specimen size: 8.2 × 6.7 × 5.2 cm = 3.23” × 2.64” × 2.05”

Main crystal size: 1 × 1 cm = 0.39” × 0.39”

Fluorite fluorescent long & short UV

Former Jan Buma collection. Number 041005
Fluorite with Creedite. Fluorite with Creedite.
Fluorite with Quartz
Fluorite with Quartz. Fluorite with Quartz.
 

FM27K9: Group of cubic Fluorite crystals of a pleasant pale green color, good transparency and brilliance. On milky Quartz crystals with little or no prism.
Dongshan Mine, Linwu, Chenzhou, Hunan  China (2004)

Specimen size: 12.5 × 11 × 6.2 cm = 4.92” × 4.33” × 2.44”

Main crystal size: 1.7 × 1.6 cm = 0.67” × 0.63”

Fluorescent long & short UV

Former Jan Buma collection. Number 040709
Scheelite with Fluorite and Dolomite
 

FC86G0: An uncommon paragenesis combining a matrix of cubic crystals of colorless Fluorite, yellow octahedrons of Scheelite and pink Dolomite covering Quartz.
Dongshan Mine, Linwu, Chenzhou, Hunan  China (±1998)

Specimen size: 7.5 × 5 × 3.2 cm = 2.95” × 1.97” × 1.26”

Main crystal size: 1.6 × 1.4 cm = 0.63” × 0.55”

Former Jan Buma collection. Number 980606

Scheelite very fluorescent long & short UV
Scheelite with Fluorite and Dolomite.
Scheelite with Fluorite and Dolomite.
Fluorite with Quartz
Fluorite with Quartz.
Fluorite with Quartz.
 

FN56J5: Octahedral crystal with multiple growth forming the so called “Aztec pyramid”, of well defined green color on an elegant matrix of white Quartz crystals.
The specimen is from Jan Buma collection and we’ll send the collection card to the buyer of the sample.
The specimen has been published in the magazine ‘extraLAPIS’ on page 26, number 35, "Fluorite der Welt".
Piaotang Mine, Dayu, Jiangxi  China (±2005)

Specimen size: 11.5 × 6.8 × 4.5 cm = 4.53” × 2.68” × 1.77”

Main crystal size: 4 × 3.3 cm = 1.57” × 1.30”

Intense fluorescence long & short UV

Former Jan Buma collection. Number 050602
Fluorite with Euclase and Quartz
 

MC27T1: Group of octahedral crystals of Fluorite with echeloned growths on their faces. They are blue, are on a group of Quartz crystals and have a nucleus of Euclase crystals that are sharp, translucent and very bright. A very unusual association.
Piaotang Mine, Dayu, Ganzhou Prefecture, Jiangxi Province  China (±2009)

Specimen size: 6.9 × 6.7 × 5.2 cm = 2.72” × 2.64” × 2.05”

Fluorescent long UV & minor fluorescence short UV

Former Jan Buma collection. Number 090401
Fluorite with Euclase and Quartz. Front
Front
Fluorite with Euclase and Quartz. Side
Side
Fluorite with Quartz
Fluorite with Quartz. Fluorite with Quartz.
 

MM77S1: Group of octahedral crystals of fluorite with slightly curved edges, on Quartz matrix. The crystal are translucent green and are zoned deep violet on the edges.
Wushan, De'an, Jiangxi  China (±2004)

Specimen size: 14.4 × 11.8 × 4.5 cm = 5.67” × 4.65” × 1.77”

Main crystal size: 2.4 × 2 cm = 0.94” × 0.79”

Minor fluorescence long & short UV

Former Jan Buma collection. Number 040792
Fluorite on Quartz
 

FA58G0: Crystals of extraordinary color are composed of the cube and dodecahedron but neither form predominates. The contrast with Quartz matrix, partially dissolved by acid, is superb.
The specimen has been published in the book 'China', by Berthold Ottens, on page 47.
De'an Mine, Wushan, De'an, Jiujiang Prefecture, Jiangxi Province  China (±2002)

Specimen size: 10.3 × 8 × 5 cm = 4.06” × 3.15” × 1.97”

Main crystal size: 3 × 2.6 cm = 1.18” × 1.02”

Former Jan Buma collection. Number 020617
Fluorite on Quartz.
Fluorite on Quartz.
Fluorite with Quartz
Fluorite with Quartz. Fluorite with Quartz.
 

MT76S5: Clear green beveled cubic crystals with geometrical zoning of deep violet shades on the bevels and in the center of the crystal. They are with crystals of Quartz. Being the first samples to arrive from China, the locality is very imprecise, and our efforts to match it have been fruitless due the unusual aspect of the sample.
Jiangxi  China

Specimen size: 8.3 × 5.3 × 2.4 cm = 3.27” × 2.09” × 0.94”

Main crystal size: 1 × 0.7 cm = 0.39” × 0.28”

Former Jan Buma collection. Number 070703
Octahedral Fluorite with Quartz
 

FN10J1: An excellent specimen, very esthetic and having all the required virtues. Crystals are octahedrons of a perfect definition of faces and edges. Color and luster are also excellent and the crystals are on an elegant matrix of small crystals of Quartz.
It is from the Jan Buma collection (num. 050403). We will send the card of collection to the buyer.
Nanshankeng Mine, Yiwu, Jinhua area, Zhejiang  China (±2005)

Specimen size: 21 × 17.5 × 7 cm = 8.27” × 6.89” × 2.76”

Main crystal size: 4 × 4 cm = 1.57” × 1.57”

Fluorescent long & short UV

Former Jan Buma collection. Number 050403
Octahedral Fluorite with Quartz. Octahedral Fluorite with Quartz.
Fluorite with Calcite
Fluorite with Calcite. Fluorite with Calcite.
 

FR96M0: Group of beveled cubic Fluorite crystals with curious growths and aggregates. Deep purple color, clearer in some sample zones. Fluorite is accompanied by some white Calcite.
Artaishan, Nanjiang, Xinjiang  China (±2001)

Specimen size: 12.3 × 10.5 × 6.6 cm = 4.84” × 4.13” × 2.60”

Main crystal size: 2.4 × 2 cm = 0.94” × 0.79”

Calcite fluorescent long & short UV

Former Jan Buma collection. Number 011045
Fluorite with Baryte and Quartz
 

MV86W8: Cubo-octahedral crystals of Fluorite whose faces are strongly polycrystalline, giving them an almost spherical shape. They have an intense violet color, are partially coated by yellow crystals of Baryte, and are on a Quartz matrix. We’ll send the Jan Buma collection card to the buyer of the sample.
Qinglong Mine, Dachang, Qinglong, Qianxi'nan Autonomous Prefecture, Guizhou Province  China (±2004)

Specimen size: 18.5 × 7.2 × 3.3 cm = 7.28” × 2.83” × 1.30”

Main crystal size: 1.4 × 1.2 cm = 0.55” × 0.47”

Former Jan Buma collection. Number 040705
Fluorite with Baryte and Quartz. Front
Front
Fluorite with Baryte and Quartz. Side
Side
Fluorite with Baryte and Quartz.
Fluorite with Quartz and Mica
Fluorite with Quartz and Mica. Fluorite with Quartz and Mica.
 

FR60M3: Parallel growth of cubic Fluorite crystals with a clear green color, good transparency and brilliance, partially covered by Quartz. We don’t have other Fluorite references from this locality but we can confirm there are Fluorite mines.
We’ll send the Jan Buma collection card to the buyer.
Pingshi, Guangdong  China

Specimen size: 7.6 × 6.6 × 4 cm = 2.99” × 2.60” × 1.57”

Main crystal size: 1.4 × 1.2 cm = 0.55” × 0.47”

Fluorescent long & short UV

Former Jan Buma collection. Number 031210
Rhodochrosite with Fluorite, Fluorapatite and Quartz
 

MX92S1: Lenticular crystals of Rhodochrosite, one of them clearly dominant, that have a deeper color and more "fresh" aspect than usual. They are with Quartz, beveled green crystals of Fluorite and small bluish crystals of Fluorapatite.
Wutong Mine, Liubao, Cangwu, Wuzhou Prefecture, Guangxi Zhuang Autonomous Region  China (±2004)

Specimen size: 10.9 × 6.3 × 4.2 cm = 4.29” × 2.48” × 1.65”

Main crystal size: 2.2 × 1.4 cm = 0.87” × 0.55”

Fluorapatite very fluorescent long & short UV

Former Jan Buma collection. Number 040708
Rhodochrosite with Fluorite, Fluorapatite and Quartz. Rhodochrosite with Fluorite, Fluorapatite and Quartz.

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