Marin Mineral
Mixed Minerals
October 30, 2026  ·  15 specimens

LP242 - Copper (cubes!)   $2,200  available

Lake Superior Copper District, Keweenaw Peninsula, Michigan, USA
Miniature - 5 x 3.5 x 2 cm



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Copper (cubes!) Copper (cubes!) Copper (cubes!) Copper (cubes!)

Cluster of cubic Copper crystals with dark patina. Copper crystals with cube form are rare and this specimen is composed of nothing but crystals with individuals to 1cm in size. Ex. Mike Martin, Ben Vone collections.


TL309 - Quartz, Manganite on Rhodochrosite   $4,000  available

N'Chwanning Mine, Kuruman, South Africa
2.5 x 2.3 x 2.3 cm



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Quartz, Manganite on Rhodochrosite Quartz, Manganite on Rhodochrosite Quartz, Manganite on Rhodochrosite Quartz, Manganite on Rhodochrosite Quartz, Manganite on Rhodochrosite

Sparkling drusy Quartz crystals coating a cluster of red Rhodochrosite crystals. The Rhodo crystals have truncated, flat terminations coated by Quartz, while much of the sides of the crystals are not covered by Quartz. In addition, small, sharp crystals of Manganite are present atop the Quartz. Ex. Carl Acosta collection and comes mounted on a Lucite stand (and propped up by a small piece of Rhodochrosite!).


TL310 - Dioptase   $500  available

Kimbedi, Mindouli District, Pool Department, Republic of the Congo
10 x 5.5 x 5 cm



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Dioptase Dioptase

Large, deep green Dioptase crystals over matrix. This is an older specimen with large sized crystals. The largest sits right in the center of specimen and measures 2 x 1.5 cm.


TL311 - Acanthite   $1,250  available

La Sirena Mine, Guanajuato, Mexico
2.5 x 2 x 2 cm



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Acanthite Acanthite Acanthite Acanthite

Large single crystal of Acanthite from Guanajuato. A sharp, well crystallized floater complete all around and undamaged and likely a pseudomorph of Acanthite after Argentite. Collected in 1999, shortly before the mine closed in 2003. Ex. Carl Acosta collection.


TL312 - Acanthite   $950  available

Level 530, San Guillermo Vein, Fresnillo, Zacatecas, Mexico
2.5 x 1.5 x 1 cm



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Acanthite Acanthite Acanthite Acanthite Acanthite

Well crystallized Acanthite specimen with an elegant, stylish look. Complete all around and undamaged. Ex. Carl Acosta collection.


TL313 - Microlite   $1,250  available

Brumado Mine, Bahia, Brazil
2 x 2 x 1.7 cm



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Microlite Microlite Microlite Microlite

Unusually large single octahedral Microlite crystal. The crystal is dark green and translucent and mostly complete all around (missing the bottom tip as shown). Ex. Carl Acosta collection. Carl acquired this out of Jean Smith's personal collection. Jean was an owner of 'The Rocksmiths' dealership who travelled to Brazil frequently on buying trips. Although Microlite is not listed on MINDAT as occurring from Brumado, Brumado has produced a wide number of rare and unusual species and I am going with Jean's locality information.


TL314 - Arsenian Pyromorphite   $950  available

Bunker Hill Mine, Kellogg, Shoshone Co., Idaho, USA
4.5 x 4.5 x 3.3 cm



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Arsenian Pyromorphite Arsenian Pyromorphite Arsenian Pyromorphite Arsenian Pyromorphite

'Wet' luster and fiery orange color make for a wonderful miniature from the famous Bunker Hill Mine. The Pyromorphite extends all around the sides and back of the specimen with a small open cavity on top.


TL315 - Quartz with Fuschite   $900  available

Chaprot Valley, Chalt, Gilgit, Pakistan
3.8 x 1.6 x 0.8 cm



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Quartz with Fuschite Quartz with Fuschite Quartz with Fuschite

Single Quartz crystal with unusual lime-green inclusions of Fuschite. The crystal is partially doubly-terminated and has excellent color zoning on the fully terminated end. The color is amazing! This is from a one time find back in 1993 and very few specimens were available. Ex. Carl Acosta collection.


TL316 - Amethyst on Quartz   $650  available

Captain Nemo Pocket, Purple Hope Claims, King Co., Washington, USA
10 x 8.5 x 7 cm



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Amethyst on Quartz Amethyst on Quartz Amethyst on Quartz Amethyst on Quartz Amethyst on Quartz

Cluster of glassy purple Amethyst crystals rising up from white Quartz crystals. Specimens such as this with Amethyst on white Quartz crystals make for some of my favorite and most aesthetically pleasing of all Amethyst specimens. Additionally, there is an Amethyst scepter to the left of the main cluster. All the terminations are perfect. There is a bit of irregular (but crystallized) surface contacting from other Quartz crystals on the back of the Amethyst cluster, otherwise it's perfect.


TL317 - Cobaltian Calcite   $750  available

Bou Azzer Mine, Draa-Tafilalet Region, Morocco
9 x 7.5 x 4.5 cm



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Cobaltian Calcite Cobaltian Calcite Cobaltian Calcite

Vivid pink crystals of Cobaltian Calcite on matrix. Translucent crystals of bright bright pink!


TL318 - Silver   $500  available

Cobalt, Ontario, Canada
8 x 6.5 x 4 cm



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Silver Silver Silver

Large sheet of solid Silver on matrix from Cobalt. The Silver is 6.5cm tall and presents perfectly for display.


TL319 - Pyrite on Donnayite (Y)   $2,750  available

Poudrette Quarry, Mont St. Hilaire, Quebec, Canada
3.5 x 3 x 2.2 cm



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Pyrite on Donnayite (Y) Pyrite on Donnayite (Y) Pyrite on Donnayite (Y) Pyrite on Donnayite (Y) Pyrite on Donnayite (Y)

Crystals of Donnayite to 1.2cm wide that are coated or replaced by Pyrite. Superb example of this rarity from the Gilles Hainaeult, Wolfgang Henkel, and Carl Acosta collections.


TL320 - Cubanite   $3,000  available

Henderson #2 Mine, Chibougamau, Quebec, Canada
2.5 x 2.1 x 0.4 cm



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Cubanite Cubanite Cubanite Cubanite Cubanite

Large single crystal of rare Cubanite from the world's best locality for the species. Bright, lustrous golden color with twinning striations evident on the front and back faces. Tabular and coin-like in form. Rare material from a closed locality dating back 25 years or more. This is both large sized and in excellent condition. Complete all around and nearly pristine. Ex. Carl Acosta collection.


TL321 - Malachite on Quartz over Chrysocolla   $1,200  available

Zacatecas, Mexico
6.2 x 4 x 2.5 cm



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Malachite on Quartz over Chrysocolla Malachite on Quartz over Chrysocolla Malachite on Quartz over Chrysocolla Malachite on Quartz over Chrysocolla

Colorful, sparkling old specimen of Quartz crystals coating sky-blue Chrysocolla with areas of botryoidal green Malachite. In pristine condition and comes with a two old labels including a Lidstom's label and another noting this was once in the Hub Dafoe collection and ex. California Academy of Sciences collection. Even more colorful and bright in person! Ex. Carl Acosta collection.


TL322 - Analcime   $300  available

Italy
5 x 4 x 3 cm



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Analcime Analcime Analcime

Large, fine quality single Analcime crystal on a basalt matrix from Italy (no specific locality available). The crystal is 2.7cm in diameter and white with slight iron staining giving a pinkish hue.


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