Mixed Minerals — Marin Mineral

Mixed Minerals
May 17, 2023 · 25 specimens

AU427 - Copper (cubic crystals!) sold

Keweenaw Peninsula, Michigan, USA
Miniature - 5 x 4 x 3 cm

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Well crystallized Copper specimen from Michigan with cubic crystals. This is a floater of nothing but great crystals without any contacts. Individual crystals reach 8mm in size. This one is just so good in all directions, it's hard to chose a display angle. A stunning marvel with great crystals all around. Ex. Carl Acosta collection.

AU428 - Tourmaline sold

Barra de Salinas, Minas Gerais, Brazil
Small Cabinet - 6.3 x 1.1 x 1.1 cm

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Brightly colored watermelon Tourmaline with a flat, glassy termination. In addition to the strong red and green colors, there is a small yellow zone between the red and green. It's perfect and undamaged, and technically a floater as the bottom has rehealed. Weighs 13.64 grams.

AU430 - Liddicoatite sold

Sahatany Valley, Antananarivo Prov., Madagascar
Thumbnail - 2.2 x 2.2 x 1 cm

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Single Liddicoatite crystal with an incredible, intensely saturated red coloration. There is chatter/damage along the short edge but it's in overall good condition with nice flat termination faces. This specimen is all about the strong color, which to my eyes varies from a cranberry red to a raspberry red. Weighs 8 grams.

AU431 - Zoisite $400 available

Alchuri, Shigar Valley, Pakistan
Thumbnail - 2.5 x 0.9 x 0.6 cm

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Rare green Zoisite crystal which are only sporadically found here at Alchuri. Sometimes called 'green Tanzanite', Alchuri is one of the only places in the world besides Tanzania to produce gemmy crystals of Zoisite. This is a beautiful undamaged cluster of multiple crystals.

AU432 - Ruby $1,850 available

Mahenge, Morogoro, Tanzania
Thumbnail - 2.5 x 2.1 x 1.4 cm

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Sharply formed crystals of translucent Ruby atop more corroded-looking, opaque light pink Ruby. The Ruby cluster is well crystallized all around and undamaged. A rare Ruby specimen from a locality better known for Spinel.

AU433 - Dolomite sold

Magnesite Mine, Sunk, Trieben, Styria, Austria
Small Cabinet - 7 x 5.5 x 3.8 cm

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Cluster of large, glassy Magnesite crystals from Austria. While not colorful, this is the kind of specimen, similar to Pyrite from Navajun, that just amazes due to the perfection of crystal form. The main crystal is 5cm in size. The crystals are perfect, complete all around, with high glassy luster and good transparency.

AU434 - Tsavorite sold

Merelani Hills, Arusha, Tanzania
Thumbnail - 1.2 x 1 x 1 cm

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Glassy single Tsavorite crystal with excellent transparency. Well crystallized all around and nearly perfect with just a narrow chip down one edge. It grew upon Graphite crystals, so while the bottom is mostly contacted, there are also small well crystallized faces on the bottom too. Top percentile for quality in terms of color, transparency, and glassy luster.

AU435 - Tsavorite sold

Merelani Hills, Arusha, Tanzania
Miniature - 3.3 x 0.8 x 0.6 cm

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An extremely elongated Tsavorite crystal cluster with attached Pyrite crystals. Fully crystallized all around and undamaged, with just a tiny point of contact on the bottom. This style of Tsavorite is an unusual, wonderful surprise from the Merelani mines made years ago. This is one of the best of this style I've seen.

AU436 - Brucite $750 available

Killa Saifullah, Balochistan, Pakistan
Small Cabinet - 6 x 6 x 4 cm

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Cluster of bright lemon yellow Brucite from Pakistan. The Brucite is translucent and this specimen has the best, most deeply saturated yellow color of any Brucite I've owned.

AU437 - Prehnite on Tanzanite $750 available

Merelani Hills, Arusha, Tanzania
Thumbnail - 2 x 1.6 x 1.4 cm

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A single purple/blue Tanzanite crystal with 2-3 well formed crystals cluster of Prehnite attached to one side and extending up to the termination. Complete all around and undamaged. This is a spectacular thumbnail of this combination.

AU439 - Aquamarine sold

Jos Plateau, Plateau, Nigeria
Thumbnail - 1.7 x 1 x 0.7 cm

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A superb, gemmy Aquamarine from old finds in the Jos Plateau in Nigeria. An etched, bullet-termination single crystal with good transparency. Complete all around and undamaged.

AU440 - Aquamarine sold

Jos Plateau, Plateau, Nigeria
Thumbnail - 1.5 x 0.8 x 0.6 cm

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A bright, gemmy single Aquamarine from old finds in the Jos Plateau in Nigeria. A well terminated single crystal with superb glassy luster and high transparency. Excellent steep, multi-faced termination.

AU441 - Scorodite $750 available

Mina Oujela, Mapimi, Durango, Mexico
Small Cabinet - 6.5 x 3 x 2.2 cm

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Crystals of blue/green Scorodite on matrix with transparent Selenite. The Scorodite crystals are well isolated and reach 9mm in size. The upper Scorodite is sharp and lustrous, perfect in form. The lower crystal is also excellent, but with some minor chipping. This could be trimmed down into a fine thumbnail.

LP122 - Amblygonite sold

Linopolis, Divino das Laranjeiras, Minas Gerais, Brazil
Thumbnail - 2 x 2 x 1 cm

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Single thumbnail-sized crystal of translucent to transparent yellow Amblygonite. Amblygonite is a rare lithium-aluminum phosphate species that is not commonly seen in fine display quality crystals. This crystal shows twinning and is complete all around with glassy luster. Translucent with transparent gem areas and undamaged.

LP153 - Fluellite $150 available

Willard Mine, Lovelock, Pershing Co., Nevada, USA
Miniature - 4.2 x 3.5 x 1.3 cm

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Shallow vug lined by drusy Quartz crystals that are sprinkled with glass, transparent crystals of Fluellite. Fluellite is a rare phosphate mineral and the world's best were found at this old Gold mine in Nevada.

MK958 - Topaz sold

Maynard Claim, Thomas Range, Utah, USA
Thumbnail - 2.1 x 1 x 0.8 cm

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Transparent golden brown Topaz crystal from the Maynard Claim in Utah. The Topaz is pristine, transparent, and has incredibly high glassy luster. Complete and undamaged. This specimen was mined in 2003.

MK959 - Topaz sold

Maynard Claim, Thomas Range, Utah, USA
Thumbnail - 1.8 x 1.5 x 1 cm

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Transparent golden brown Topaz crystal from the Maynard Claim in Utah. The Topaz is pristine, transparent, and has incredibly high glassy luster. Complete and undamaged, you could facet a large gemstone from this one. This specimen was mined in 2003.

MK960 - Topaz sold

Maynard Claim, Thomas Range, Utah, USA
Thumbnail - 1.7 x 1 x 0.9 cm

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Transparent golden brown Topaz crystal from the Maynard Claim in Utah. The Topaz is pristine, transparent, and has incredibly high glassy luster. Complete and undamaged with attached Rhyolite. This specimen was mined in 2003.

MK968 - Rutile, Hematite in Quartz sold

Novo Horizonte, Bahia, Brazil
Miniature - 3.5 x 3.2 x 2 cm

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Glassy, transparent smokey Quartz crystals with inclusions of golden, hair-like Rutile. This one also has a black Hematite crystal with radiating needles of golden Rutile partially included within one side of the crystal cluster.

MK947 - Azurite $200 available

Milpillas Mine, Cuitaca, Sonora, Mexico
Miniature - 4.5 x 3.5 x 2.5 cm

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Formation of interconnected Azurite crystals. The Azurite are tabular in form with high luster and display areas altered to Malachite and also flashed of bright 'electic' blue color. The cluster is fine and undamaged and contacted along one side where it grew against the matrix. Great crystals!

MK666 - Azurite (etched) $200 available

Milpillas Mine, Cuitaca, Sonora, Mexico
Miniature - 4.5 x 4 x 1.8 cm

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A 2.5cm tall single Azurite crystal on matrix. The Azurite is pristine and undamaged and unusual showing natural etching.

LP259 - Brazilianite $280 available

Telerio Mine, Mendes Pimental, Minas Gerais, Brazil
Miniature - 3.2 x 1 x 0.7 cm

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Glassy and gemmy Brazilianite crystal from the Telerio Mine in Brazil. This is a doubly-terminated crystal complete all around. A floater with a sidecar crystals and Albite. Ex. Len Pisciotta collection. Len hunted for doubly-terminated Brazilianites for years and this one is from the small sub-collection he assembled.

LP263 - Brazilianite sold

Telerio Mine, Mendes Pimental, Minas Gerais, Brazil
Thumbnail - 2.7 x 1.7 x 1.3 cm

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Glassy and gemmy interconnected Brazilianite crystals from the Telerio Mine in Brazil. The main crystal is doubly-terminated, complete all around, and pristine. There are additiional smaller Brazilianite crystals and Albite. Ex. Len Pisciotta collection. Len hunted for doubly-terminated Brazilianites for years and this one is from the small sub-collection he assembled.

LP269 - Brazilianite $350 available

Telerio Mine, Mendes Pimental, Minas Gerais, Brazil
Miniature - 4.2 x 1.6 x 1.5 cm

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Glassy and gemmy Brazilianite crystals from the Telerio Mine in Brazil. This specimen is composed of two doubly-terminated crystals that are complete all around and undamaged. A floater with attached Quartz crystals and Albite. Ex. Len Pisciotta collection. Len hunted for doubly-terminated Brazilianites for years and this one is from the small sub-collection he assembled.

MK890 - Fluorite $125 available

Yaogangxian Mine, Hunan, China
Small Cabinet - 6 x 3.8 x 2 cm

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Purple color-zoned Fluorite crystals on Muscovite. The Fluorite cubes are transparent and reach 1.2cm in size. The specimen has a neat overall form and and is a floater well crystallzied all around. The front has tiny Arsenopyrite crystals attached and the backside is mostly coated by dark green Chlorite.

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