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EC56R1: Bultfonteinite with Hydroxyapophyllite-(K) and Calcite

Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province South Africa (2006)
Specimen size: 8.5 × 3.4 × 2.5 cm = 3.35” × 1.34” × 0.98”

ED36R1: Bultfonteinite with Hydroxyapophyllite-(K) and Calcite

Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province South Africa (2006)
Specimen size: 9.7 × 3.7 × 3.4 cm = 3.82” × 1.46” × 1.34”

Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”

EM46R1: Bultfonteinite with Hydroxyapophyllite-(K) and Calcite

EZ56R1: Bultfonteinite with Hydroxyapophyllite-(K) and Calcite

Fanlike groups of snowy white acicular crystals of Bultfonteinite replacing the faces of short elongated crystals of Hydroxyapophyllite-(K) which has a pseudocubic habit. In some cases the replacement is deeper and forms a more or less complete pseudomorph of the preexisting Hydroxyapophyllite-(K). All are on a matrix of clear, complex, crystals of Calcite. We’ll send a copy of the analysis to the buyer of the piece.
N'Chwaning II Mine, N'Chwaning mining area, Kuruman, Kalahari manganese field (KMF), Northern Cape Province South Africa (2006)
Specimen size: 8 × 8 × 6 × cm = 3.15” × 3.15” × 2.36”

Main crystal size: 1.5 × 1.2 cm = 0.59” × 0.47”

MHR27AO2: Bultfonteinite with Shinichengite

Spheroidal and centered growths of white acicular Bultfonteinite crystals, covered almost entirely by a subsequent growth of pink Shinichengite (this new mineral species was initially labeled as possible Tobermorite-Clinotobermorite) The specific spot at the locality where the find was made has already been closed, so no new discoveries can be expected in that specific place.
Shijiangshan Mine, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region China (09/2021)
Specimen size: 2.8 × 2.3 × 1.5 cm = 1.10” × 0.91” × 0.59”

SV360TAR: Bultfonteinite with Shinichengite

A novelty for 2021: Shinichengite on matrix (this new mineral species was initially labeled as possible Tobermorite-Clinotobermorite) that forms small fibrous spheroidal coatings of intense pink color that accompany spheroidal growths of orange-brown Bultfonteinite. The specimen has been analyzed and we will send a copy of the analysis to the buyer. If you wish to delve deeper into the species and parageneses of this mine, you can consult the article by Menor-Salván, C.; Ottens, B.; Richard, E. “Rare borate minerals from the Shijiangshan-Shalonggou Deposits, Hexigten Banner, Inner Mongolia, China”. Rocks & Minerals, 96(5) (September/October 2021)
Shijiangshan Mine, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region China (09/2022)
Specimen size: 8.2 × 4.3 × 4.3 cm = 3.23” × 1.69” × 1.69”

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

MRF50AO2: Bultfonteinite with Shinichengite and Andradite

A novelty for 2021. Shinichengite (this new mineral species was initially labeled as possible Tobermorite-Clinotobermorite) forms small fibrous spheroidal coatings of an intense pink color that accompany spheroidal growths of Bultfonteinite, of good size and of an orange-brown color. On massive Andradite matrix with some small crystals at the base. The specific spot at the locality where the find was made has already been closed, so no new discoveries can be expected in that specific place.
Shijiangshan Mine, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region China (09/2021)
Specimen size: 6.1 × 4.4 × 3.4 cm = 2.40” × 1.73” × 1.34”

TFR50AP2: Bultfonteinite with Shinichengite and Andradite

Spheroidal growths of Bultfonteinite, of good size, on matrix, with Shinichengite (this new mineral species was initially labeled as possible Tobermorite-Clinotobermorite) that forms small fibrous spheroidal coatings of white color associated with Andradite on the matrix. The specific area in the locality where the discovery took place has now been covered over, so no new finds are expected at that specific location.
Shijiangshan Mine, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region China (09/2021)
Specimen size: 8.2 × 6.1 × 4.6 cm = 3.23” × 2.40” × 1.81”

MMP26AO2: Bultfonteinite with Shinichengite, Andradite and Calcite

A novelty for 2021. Shinichengite (this new mineral species was initially labeled as possible Tobermorite-Clinotobermorite) forms small fibrous spheroidal coatings of an intense pink color that accompany spheroidal growths of Bultfonteinite, of good size with an orange-brown color. On matrix, with Calcite cleavages and a single Andradite crystal. The specific spot at the locality where the find was made has already been closed, so no new discoveries can be expected in that specific place.
Shijiangshan Mine, Yinwu, Linxi, Ulanhad League, Inner Mongolia Autonomous Region China (09/2021)
Specimen size: 12.1 × 7.2 × 6.7 cm = 4.76” × 2.83” × 2.64”

TPB47AP5: Bustamite

Centered and fan-shaped aggregates of white acicular Bustamite crystals that stand out on the dark matrix. Very few specimens are seen from this locality other than very old ones like this one, which comes from the collection of Edmond Landais, whose handwritten label we will send to the buyer.
Temperino Mine, Campiglia Marittima, Campigliese, Livorno Province, Tuscany Italy
Specimen size: 6 × 3.8 × 3.4 cm = 2.36” × 1.50” × 1.34”

TP69Y1: Ca-bearing Pyromorphite (polysphaerite)

Clear and uniform green botryoidal aggregate, coating and surrounding a Quartz matrix. The analysis reveals it is polysphaerite, a chemical variety Pyromorphite, very rich in calcium and very rare. The sample has been analyzed and we’ll send a copy of the analysis to the buyer.
This specimen was photographed for the magazine ‘Mineralien Welt’ and appears on page 14 of number 5/2013
La Vidale Mine (Brezies), Asprières, Saint-Martin de Bouillac, Villefranche-de-Rouergue, Aveyron, Occitanie France
Specimen size: 7.5 × 5.3 × 4.9 cm = 2.95” × 2.09” × 1.93”

EB9G4: Cabriite with Sperrylite

Magnificent! Extremely rare crystals of this scarce natural alloy of Palladium, Tin and Copper. The little crystals are on the backside of an elongated crystal of Sperrylite, very well defined and bright and enhanced by the metallic matrix.
Oktyabr'skoe deposit, Talnakh, Noril'sk, Putoran Plateau, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Krasnoyarsk Krai Russia (1997)
Specimen size: 2 × 1.5 × 2 cm = 0.79” × 0.59” × 0.79”

Main crystal size: 0.7 × 0.3 cm = 0.28” × 0.12”

MV16E9: Cafarsite

The Cafarsite crystal is large, quite complex, has perfectly defined faces and edges, and it combines the forms of the rhombohedron, octahedron, pyritohedron and cube. The Albite matrix adds to its esthetics. A great specimen with more brilliance and beauty than is usual for this rare species.
Cherbadung, Binntal, Wallis Switzerland (±1986)
Specimen size: 3.3 × 1.8 × 2 cm = 1.30” × 0.71” × 0.79”

EP96M8: Cafarsite with Mica

Group of complex crystals, one of them clearly dominant, of good size, bright, very rich of faces and partially coated by of small crystals of mica, probably Muscovite. The crystals have small holes that are not damage but growth defects.
Wannigletscher, Cherbadung, Binntal, Wallis Switzerland (2007)
Specimen size: 2.2 × 1.6 × 1.4 cm = 0.87” × 0.63” × 0.55”

Main crystal size: 1.5 × 1.2 cm = 0.59” × 0.47”

TM56AI8: Calaverite with Calcite

Very bright flattened Calaverite crystals with very well defined parallel growths and with very fine growth striations. On matrix with Calcite. The Calaverite has been analyzed and we will send a copy of the analysis to the buyer.
This specimen has been photographed and published in the Bulletin ‘MiniBul A.G.A.B.’ on page 3 of number 9/2021
Cripple Creek District, Teller County, Colorado USA
Specimen size: 2.4 × 2.4 × 0.7 cm = 0.94” × 0.94” × 0.28”

HM180NR: Calcita

Coralloidal growth of Calcite, very aerial and aesthetic, lustrous, and snow-white. The specimen is from a locality little known to collectors and comes to us via the collection of Miguel David Martínez (nº 181) whose label we will send to the buyer.
Cabezo de San Ginés, El Estrecho de San Ginés, Cartagena, Comarca Campo de Cartagena, Region of Murcia (Murcia) Spain (2004)
Specimen size: 11.2 × 8.3 × 5.7 cm = 4.41” × 3.27” × 2.24”

TC240NG: Calcita (variety Cobalt-bearing)

Botryoidal aggregates with areas of different colors, ranging from white to pink and deep mauve, with more crystalline, translucent and lustrous areas. At one time, it was said that the greenish yellow areas corresponded to nickel-bearing calcites, but later studies did not confirm the presence of nickel.
Solita Mine, Peramea, Baix Pallars, Comarca Pallars Sobirà, Lérida / Lleida, Catalonia / Catalunya Spain
Specimen size: 15 × 8 ×6 cm = 5.91” × 3.15” × 2.36”

NG46F7: Calcita with Fluorite and Quartz

Calcite is not so common in this Quarry. In this case we have a quite large, rounded crystal of Calcite on the typical matrix of Fluorite and Quartz, although in this case the Fluorite is colorless. Curiously the Calcite is intensely yellow-orange near the rear, almost certainly due to the presence of oxides that were in the iron rich fluids from which it formed.
La Viesca Mine, Coquera de la Calcita pocket, La Collada mining area, Huergo, Siero, Comarca Oviedo, Principality of Asturias (Asturias) Spain (01/2004)
Specimen size: 12.5 × 10.5 × 8.5 cm = 4.92” × 4.13” × 3.35”

Main crystal size: 6.6 × 5.2 cm = 2.60” × 2.05”

CT57AH6: Calcite

Floater tabular crystal with the clearly dominant rhombohedron, and with other minor forms that have very well defined faces and edges. It is translucent, bright and has snowy white color. We’ll send to the buyer the original label and also a copy of the computer card with the full collection catalog text.
La Luz, Municipio Guanajuato, Guanajuato Mexico
Specimen size: 2.4 × 2.1 × 1.4 cm = 0.94” × 0.83” × 0.55”

2N08: Calcite

Complex Calcite crystal, rounded, with the dominant form of a scalenohedron and a flattened rhombohedron, transparent, bright, with a yellowish color and on a rocky matrix with Dolomite and many little Calcite crystals.
La Florida mining area, Herrería-Valdáliga-Rionansa, Comarca Costa Occidental/Saja-Nansa, Cantabria Spain
Specimen size: 5.2 × 4.1 × 2.7 cm = 2.05” × 1.61” × 1.06”

Main crystal size: 2.0 × 1.6 × 1.7 cm = 0.79” × 0.63” × 0.67”

SM40DWH: Calcite

Botryoidal Calcite growth, very aerial and aesthetic, with a uniform sky-blue color caused by inclusions. The specimen comes from the Lluis Daunis collection, whose handwritten label we will send to the buyer.
Peñamellera Alta, Comarca Oriente, Principality of Asturias (Asturias) Spain
Specimen size: 3.6 × 2.5 × 1.8 cm = 1.42” × 0.98” × 0.71”

2S08: Calcite

Prismatic Calcite crystal, translucent, with slightly curved faces and edges, well defined, and terminated by a rhombohedron.
Bleiberg mining area, Gailtaler Alpen & Karnische Alpen, Carinthia/Kärnten Austria
Specimen size: 2.5 × 1.6 × 1.2 cm = 0.98” × 0.63” × 0.47”

NGX11AQ0: Calcite

Growth of very acute scalenohedral Calcite crystals, water-clear and with a second generation of less well defined crystals, smaller in size and yellowish in color.
Can Palomeres Mines, Malgrat de Mar, Comarca Maresme, Barcelona, Catalonia / Catalunya Spain (2017)
Specimen size: 6.1 × 4.1 × 3.5 cm = 2.40” × 1.61” × 1.38”

TFM11AO6: Calcite

Group of Calcite crystals, with dominant scalenohedron forms, with very well defined parallel growths, between translucent and transparent, with good luster and a uniform pale lilac color. From a unique find in Aït Ahmane where this type of Calcite was not known before and has not been seen since.
Aït Ahmane (auxiliary shaft), Agdz, Bou Azzer mining district, Zagora Province, Drâa-Tafilalet Region Morocco (07/2018)
Specimen size: 5.2 × 4.3 × 3.1 cm = 2.05” × 1.69” × 1.22”

DC10AH7: Calcite

Group of scalenohedral Calcite crystals with very well defined faces and edges, with slight curvatures and most of them doubly terminated. They are translucent, have a honey color and fine recrystallization on most on their faces.
The Daunis collection was, in the 70’s and the 80’s, a reference for local prospectors of the Barcelona area. The sample is with the original manuscript label that we’ll send to the buyer.
Dolomítica Group of Mines, Montehano, Escalante, Comarca Trasmiera, Cantabria Spain
Specimen size: 7.5 × 6.7 × 4.6 cm = 2.95” × 2.64” × 1.81”

12582 results found.

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