Mineral Specimens - page 1
USA

XM160GF: Very sharp individual crystal of Ilvaite, with very well defined crystal forms and perfect terminations. The specimen is of great quality and size for this classic American locality. It comes from the Pedro Goy collection, whose label we will send to the buyer.
Bay State Group Mine, South Mountain Mining District, Owyhee County, Idaho  USA

Specimen size: 2.6 × 2.5 × 2.4 cm = 1.02” × 0.98” × 0.94”

GA96AK5: Very aerial arborescent growth of native Copper crystals with defined faces and edges, some of them perfectly profiled, on matrix.
The sample is from the Casado Margolles collection (No. V 35), whose file we will send to the buyer.
Keweenaw County, Michigan  USA

Specimen size: 4.9 × 2.7 × 2.8 cm = 1.93” × 1.06” × 1.10”

TPP48AQ1: Extraordinarily flattened floater plate of elongated Copper microcrystals.
The specimen comes from the collection of William Severance.
Keweenaw Peninsula, Michigan  USA

Specimen size: 16.4 × 8.2 × 1.1 cm = 6.46” × 3.23” × 0.43”

CFR69AO8: Silver crystals with polycrystalline growths and discernible crystal forms, interspersed with an arborescent growth of Copper. A classic and, at the same time, a rarity from the USA.
The specimen comes from the collection of duplicates of Carlos Curto (number 1989.29), whose label we will send to the buyer.
Lake Superior Mine, Phoenix, Keweenaw County, Michigan  USA

Specimen size: 2.7 × 2.6 × 1.8 cm = 1.06” × 1.02” × 0.71”

Main crystal size: 1.0 × 0.7 cm = 0.39” × 0.28”

TF66AH5: Dendritic growth with a clearly dominant crystal of a good size, with the well-developed faces of the dodecahedron and the octahedron.
We’ll send the sample in its original Perkin’s box from the R.J. Noble collection, also containing the collection label in which it appears that it had previously been in the Frank Melanson collection.
Franklin Mine, Franklin, Houghton County, Michigan  USA

Specimen size: 2.7 × 2.2 × 1.6 cm = 1.06” × 0.87” × 0.63”

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

TK69L5: A classic specimen from a classic locality. Dendritic growth of crystals of considerable size, elongated, with some well defined faces. Nice floater.
Houghton County, Michigan  USA

Specimen size: 10.6 × 8.2 × 2 cm = 4.17” × 3.23” × 0.79”

XM140TBA: Group of complex Calcite crystals that form well defined staggered growths. This specimen is from the Lee Hogg collection.
Brushy Creek Mine, Greeley, Viburnum Trend District, Reynolds County, Missouri  USA

Specimen size: 7.8 × 6.4 × 4 cm = 3.07” × 2.52” × 1.57”

LH76AE7: Very sharp and aerial Galena crystals, one of them clearly dominant. They are cubic with small octahedral faces, and are on matrix with small white Dolomite rhombohedra and twinned Chalcopyrite crystals.
The sample is from the Carles Millán collection whose catalog card we’ll send to the buyer.
Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County, Missouri  USA

Specimen size: 7.6 × 4.3 × 4.9 cm = 2.99” × 1.69” × 1.93”

Main crystal size: 4.5 × 4.2 cm = 1.77” × 1.65”

TTB90AP9: Group of very sharp Galena crystals of good size, very lustrous, with deformed crystal coatings and spheroidal growths of Pyrite.
The specimen comes from the Michel Carré collection
Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County, Missouri  USA

Specimen size: 8.2 × 8 × 5.7 cm = 3.23” × 3.15” × 2.24”

Main crystal size: 5 × 4.9 cm = 1.97” × 1.93”

TGB68AN4: Very aerial group of slightly tapered Mimetite crystals, many of them doubly terminated, with good luster and a uniform brown color, on matrix, with small Quartz crystals.
The specimen comes from a little-known locality for the species and is of excellent quality for what was found there.
Black Pine Mine, John Long Mountains, Philipsburg District (Flint Creek District), Granite County, Montana  USA

Specimen size: 5.8 × 5.2 × 2.8 cm = 2.28” × 2.05” × 1.10”

Main crystal size: 0.4 × 0.1 cm = 0.16” × 0.04”

HM320TM: Dendritic growt very aerial and on a Quartz matrix, of leafy crystals with finely shaped edges of Gold (variety electrum), very rich in Silver (27% approx.)
We will send a copy of the analysis to the buyer of the specimen.
Weight: 0.8 grams
R.J. Roberts lode, Willow Creek District, Pershing County, Nevada  USA (2015)

Specimen size: 1.9 × 1.2 × 0.8 cm = 0.75” × 0.47” × 0.31”

TA30AC9: A novelty at Tucson 2016. Aggregate very rich in silver (27% aprox.) leafy Gold crystals (electrum variety), with flat octahedral crystals in groups that resemble leaves. Its color is the classic "old gold" of electrum due to its Silver-rich composition.
R.J. Roberts lode, Willow Creek District, Pershing County, Nevada  USA (2015)

Specimen size: 2.1 × 2 × 0.8 cm = 0.83” × 0.79” × 0.31”

TF90AK7: Very aerial aggregate of leafy gold crystals (electrum variety) very rich in silver (27% approx.) and with finely profiled edges. We will send a copy of the analysis to the buyer.
R.J. Roberts lode, Willow Creek District, Pershing County, Nevada  USA (2015)

Specimen size: 2.3 × 1.9 × 0.6 cm = 0.91” × 0.75” × 0.24”

TQ74AK4: Arborescent aggregate of Gold crystals (electrum variety) very rich in silver (27% approx.), leafy and with finely serrated edges. The specimen comes from a unique find made in a previously unknown mine. We will send a copy of the analysis to the buyer of the specimen.
R.J. Roberts lode, Willow Creek District, Pershing County, Nevada  USA (2015)

Specimen size: 2.8 × 2.4 × 0.8 cm = 1.10” × 0.94” × 0.31”

TR16AM3: Very aerial group of lamellar Gold crystals (variety electrum), some of them with very well marked skeletal growths and a little matrix at the back. The specimen comes from a relatively recent find in a known gold zone.
Specimens from this find were analyzed and we will send a copy of the analysis to the buyer.
R.J. Roberts lode, Willow Creek District, Pershing County, Nevada  USA (2015)

Specimen size: 2.9 × 2.5 × 1 cm = 1.14” × 0.98” × 0.39”

TD49AE9: Single crystal, on a rocky matrix, of this rare silver sulphosalt. It has very well defined faces and edges and an unusually intense luster.
Mina Rosebud, Rosebud District, Pershing County, Nevada  USA

Specimen size: 4 × 2.6 × 1.5 cm = 1.57” × 1.02” × 0.59”

Main crystal size: 1.2 × 0.6 cm = 0.47” × 0.24”

EA90AI4: Very sharp rhombohedral Cinnabar crystals with very well defined faces and the interpenetration twin. They have a very vivid color and are on matrix with small Quartz crystals. This specimen has an extraordinary quality for the locality, well known for the species but where good Cinnabars are rare. With label from Scott J. Williams
Snowshoe Mine, Paradise Valley, Poverty Peak District, Humboldt County, Nevada  USA (±1954)

Specimen size: 5.5 × 3.6 × 4.1 cm = 2.17” × 1.42” × 1.61”

Main crystal size: 0.9 × 0.7 cm = 0.35” × 0.28”

TT47AL3: Equidimensional Fluorapophyllite-(K) crystals, one of them clearly dominant, with an apparently cubic habit, with very well defined faces and edges, translucent white, on matrix, with Quartz and small white botryoidal aggregates of Prehnite. The specimen comes from a classic American locality for the species.
Paterson, Passaic County, New Jersey  USA (±1930)

Specimen size: 6.5 × 5 × 3.2 cm = 2.56” × 1.97” × 1.26”

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

MDE47AO3: Two groups of octahedral Franklinite crystals with sharp crystal forms, somewhat lustrous, on a Calcite matrix and with Willemite.
From one of the type localities for the species.
Sterling Mine, Sterling Hill, Ogdensburg, Franklin mining district, Sussex County, New Jersey  USA

Specimen size: 7.2 × 5.6 × 3.8 cm = 2.83” × 2.20” × 1.50”

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

MXT94AO3: Octahedral Franklinite crystals of considerable size for the species, with very sharp crystal forms, with better luster than usual and on a Calcite matrix with Willemite. A USA classic of very good quality.
From one of the type localities for the species.
Sterling Mine, Sterling Hill, Ogdensburg, Franklin mining district, Sussex County, New Jersey  USA

Specimen size: 10.1 × 6.4 × 5.4 cm = 3.98” × 2.52” × 2.13”

Main crystal size: 2.8 × 2 cm = 1.10” × 0.79”

MM37AG9: Botryoidal Smithsonite with a very aerial character, with a pale blue color and areas with intense blue shades. The sample is very typical for Kelly Mine samples, an American classic.
Kelly Mine, Magdalena, Magdalena District, Socorro County, New Mexico  USA

Specimen size: 5.1 × 4.8 × 3 cm = 2.01” × 1.89” × 1.18”

TFB87AO0: Spheroidal growths of Smithsonite, on matrix, translucent, with a satin luster and a uniform bluish green color. An American classic.
Kelly Mine, Magdalena, Magdalena District, Socorro County, New Mexico  USA

Specimen size: 8.2 × 5.4 × 4.2 cm = 3.23” × 2.13” × 1.65”

MML91AO1: Spheroidal growths of Smithsonite. On matrix, translucent, with an intense satiny luster for the species and an intense and uniform bluish green color. The mineral's banded growth is visible on the side. An excellent American classic.
Kelly Mine, Magdalena, Magdalena District, Socorro County, New Mexico  USA

Specimen size: 9.5 × 6 × 3.6 cm = 3.74” × 2.36” × 1.42”

BRR98AP3: Druse of Fluorite crystals between transparent and translucent, blue with lilac tones, on matrix and with small Quartz crystals. The specimen is an excellent American classic from a classic locality.
Blanchard Mine (Portales-Blanchard Mine), Bingham, Hansonburg District, Socorro County, New Mexico  USA

Specimen size: 14.4 × 12.5 × 6.6 cm = 5.67” × 4.92” × 2.60”

Main crystal size: 1.2 × 1.1 cm = 0.47” × 0.43”

TV88AH1: Lenticular Linarite crystals, flattened and elongated with faces and edges more defined than usual, with a very intense and vivid blue color and on a Quartz matrix. The sample is from an American locality that is a classic for the species.
Bingham, Hansonburg District, Socorro County, New Mexico  USA (±1990)

Specimen size: 5.3 × 4.3 × 3.7 cm = 2.09” × 1.69” × 1.46”

Main crystal size: 0.5 × 0.2 cm = 0.20” × 0.08”

TC86AL6: A novelty at Tucson 2020. Elongated Tremolite crystals, one of them clearly dominant, on a Dolomite matrix, with marked scepter growth. They have very well defined faces and edges, good terminal faces and an intense luster between crystalline and silky. It exhibits greater transparency than usual in specimens from this area and a beautiful gray-green color with bluish tints. From a recent find, the quality is also far superior to what is generally known from the St. Lawrence County area.
The crystal was reinforced, already at origin, in two spots on the prism to avoid its possible separation.

Big Mole claim, West Pierrepont, St. Lawrence County, New York  USA (06/2019)

Specimen size: 15.7 × 6.5 × 4 cm = 6.18” × 2.56” × 1.57”

Main crystal size: 15.7 × 2.3 cm = 6.18” × 0.91”

TC2110TRF: Group of very sharp Gypsum crystals with good luster and a reddish color, totally filled with sand inclusions. A geological curiousity.
Great Salt Plains, Jet, Alfalfa County, Oklahoma  USA

Specimen size: 8.6 × 7.8 × 6.3 cm = 3.39” × 3.07” × 2.48”

Main crystal size: 5.3 × 4.6 cm = 2.09” × 1.81”

SV3180TPT: These Hamiltonban coppers are not very attractive, but of remarkable size and very difficult to get. A historical part of the US mining heritage.
Blue Ridge Summit, Hamiltonban Township, Adams County, Pennsylvania  USA

Specimen size: 7.5 × 6.9 × 1.6 cm = 2.95” × 2.72” × 0.63”

AF11AM3: Group of disphenoidal crystals (pseudotetrahedral) of Chalcopyrite, with sharp crystal forms. On a Magnetite matrix with octahedral crystals of Magnetite.
French Creek Mines, St. Peters, Warwick Township, Chester County, Pennsylvania  USA

Specimen size: 4.4 × 3.2 × 2.3 cm = 1.73” × 1.26” × 0.91”

Main crystal size: 1.2 × 0.7 cm = 0.47” × 0.28”

TPM76AO0: Group of crystals, with one of them clearly dominant and all of them doubly terminated, totally occupied by inclusions of sand. They are formed by a prism with curved edges and a poorly defined terminal rhombohedron. An American classic which it is currently very difficult to obtain in good specimens as the area in which they were found has been declared a National Park.
Rattlesnake Butte, Jackson County, South Dakota  USA

Specimen size: 9.3 × 6.7 × 4.5 cm = 3.66” × 2.64” × 1.77”

Main crystal size: 7.6 × 3 cm = 2.99” × 1.18”

NTT89AQ1: Floater group of scalenohedral Calcite crystals in parallel growth, twinned and doubly terminated with one of them clearly dominant. Translucent, with very bright luster and intense color. An American classic.
The specimen comes from the collection of Miguel David Martínez Pérez.
Elmwood Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee  USA

Specimen size: 11.6 × 5.7 × 4.8 cm = 4.57” × 2.24” × 1.89”

MT67X6: Cubic crystal of Fluorite with polycrystalline faces and small Galena crystals on their surfaces. The crystal is translucent and bright, has a clear lilac color and it is on a Galena matrix.
Elmwood Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee  USA

Specimen size: 7.5 × 7.3 × 7.5 cm = 2.95” × 2.87” × 2.95”

AA66AG9: Druse of complex Sphalerite crystals, very rich with faces, clearly twinned and with very well defined forms. They are translucent, very bright, have a very deep color and are on a rocky matrix with small scalenohedral Calcite crystals. An American classic, typical of past samples from the Elmwood mine.
Elmwood Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee  USA

Specimen size: 7.9 × 7.4 × 4.4 cm = 3.11” × 2.91” × 1.73”

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

MP36T0: Well individualized crystals with very well defined faces and edges, very bright, and with intense deep red reflections. On matrix, with white rhombohedral crystals of Dolomite.
Gordonsville Mine, Carthage, Central Tennessee Ba-F-Pb-Zn District, Smith County, Tennessee  USA

Specimen size: 5.4 × 5.4 × 2.4 cm = 2.13” × 2.13” × 0.94”

Main crystal size: 1.9 × 1.6 cm = 0.75” × 0.63”

EPF93AQ1: Druse of rhombohedral Rhodochrosite crystals with well-developed crystal forms, of very good size and definition for the locality (which is extraordinarily unusual), lustrous and pale pink.
The specimen is from the collection of Dr. Collin Kaeder.
Burgin Mine, Tintic District, East Tintic Mountains, Juab County, Utah  USA

Specimen size: 6.4 × 5.5 × 3.7 cm = 2.52” × 2.17” × 1.46”

Main crystal size: 1.3 × 1.1 cm = 0.51” × 0.43”

BFG56AO6: Cuboctahedral crystal of Bixbyite of good size with very sharp crystal forms, with very bright luster, on a matrix of volcanic rock. With coatings of small light purple Fluorite crystals, transparent Topaz crystals and a very sharp Pseudobrookite crystal with excellent terminations.
The specimen comes from an important European collection and was sold by the well-known Dr. Wilke.
Thomas Range, Juab County, Utah  USA

Specimen size: 12.4 × 8.1 × 5.9 cm = 4.88” × 3.19” × 2.32”

Main crystal size: 1.1 × 0.9 cm = 0.43” × 0.35”

EE89AL3: Group of Quartz crystals (variety amethyst) transparent and bright. The color is selectively distributed, with the prism faces being practically colorless, slightly reddish colors on the pyramidal faces, and intense violet concentrated mainly around the terminal edges. The specimen comes from a classic American locality.
North Bend, King County, Washington  USA

Specimen size: 7.8 × 6.1 × 4.6 cm = 3.07” × 2.40” × 1.81”

Main crystal size: 4.7 × 2.4 cm = 1.85” × 0.94”