Marin Mineral
Mixed Minerals
January 2, 2020  ·  13 specimens

AB115 - Covellite  sold

Butte, Silverbow Co., Montana, USA
Small Cabinet - 7.7 x 5 x 4 cm



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Covellite Covellite Covellite

Irridescent purple/blue crystals of Covellite atop a Pyrite rich matrix. Both front and back sides shown.


M310 - Quartz on Amethyst  sold

Mina Cata, Guanajuato, Mexico
Miniature - 4.5 x 2.2 x 1.5 cm



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

Neat old specimen of an amethyst crystal with a white Quartz scepter head. Complete all around and has a small Quartz side crystal attached.


M316 - Hematite   $180  available

Bouse, Plomosa Mining District, Plomosa Mts, La Paz Co., Arizona, USA
Miniature - 3.8 x 2.5 x 1.3 cm



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Hematite Hematite Hematite

Thick, tabular Hematite crystal group, well crystallized on both sides. An Arizona classic.


M313 - Galena   $220  available

Freiberg, Saxony, Germany
Miniature - 5 x 4.5 x 2 cm



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Galena Galena Galena Galena Galena

Cluster of lustrous cubes of Galena from the historic mines of Freiberg.

M297 - Tourmaline on Lepidolite  sold

Santa Rosa Mine, Minas Gerais, Brazil
Miniature - 3.9 x 3.5 x 2 cm



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Tourmaline on Lepidolite Tourmaline on Lepidolite Tourmaline on Lepidolite

Green Elbaite on purple Lepidolite. The Tourmaline are not terminated but nonetheless a colorful and aesthetic piece.


AB116 - Grossular  sold

Vesper Peak, Snohomish Co., Washington, USA
Small Cabinet - 6 x 5 x 4 cm



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Grossular Grossular Grossular

Gemmy orange Grossular crystals to 9mm in a shallow vug. Great luster and transparency (sorry, a little dust shows on the surfaces but they are like smooth glass). Ex. Francesco Bedogne collection.


M220 - Hemimorphite   $225  available

Ojuela Mine, Mapimi, Durango, Mexico
Thumbnail - 2.7 x 2.1 x 1.3 cm



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Hemimorphite Hemimorphite Hemimorphite Hemimorphite

Beautiful spray of Hemimorphite crystals, complete all around and undamaged. It's even partially double-terminated. A superb thumbnail sized specimen for the species.Better than photos.


M239 - Wulfenite  sold

Rowley Mine, Arizona, USA
Thumbnail - 1.8 x 1.8 x 1.3 cm



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Wulfenite Wulfenite Wulfenite

Small specimen loaded with transparent orange 'window panes' of Wulfenite. Tons of fine quality crystals here.


M210 - Quartz  sold

Broken Hill Mine, New South Wales, Australia
Miniature - 5 x 4.5 x 2.5 cm



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Quartz Quartz Quartz Quartz

Aesthetic, undamaged cluster of clear Quartz from the Broken Hill Mine. Divergent cluster of crystals, some of which are double-terminated. Clean and undamaged, crystallized all around with one point of contact at the base. Out of an old collection built in the 1970s-80s.


M234 - Amethyst  sold

Obara cho, Miyagi Prf., Japan
Thumbnail - 1.7 x 0.8 x 0.8 cm



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Amethyst Amethyst Amethyst Amethyst

Transparent single Amethyst crystal. Out of an old collection built in the 1970s-80s. Comes mounted in a perky box that shows an old price of $100.


K453 - Prehnite on Graphite  sold

Merelani Hills, Arusha, Tanzania
Small Cabinet - 5.5 x 4 x 3 cm



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Prehnite on Graphite Prehnite on Graphite Prehnite on Graphite Prehnite on Graphite

Sculptural specimen of translucent yellow Prehnite with large toothy crystals sticking out in various directions on a small amount of Graphite matrix. Fine quality, undamaged specimen.


K535 - Gahnite  sold

Kagoro, Kaduna State, Nigeria
Thumbnail - 0.6 x 0.6 x 0.6 cm



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Gahnite Gahnite Gahnite

Transparent blue Gahnite crystal, the zinc rich end member and one of the rarer species in the Spinel group of minerals. A complete octahedron with one tiny chip on one tip, otherwise perfect and one of the sharper most perfect crystals I've had of this material. It's also transparent and appears all facet grade internally. These were first discovered in 2001 and are found mostly of industrial quality. Though they don't get very large, the color is spectacular. The GIA has written a nice article about these crystals published in Gems & Gemology, Fall 2019, Vol. 55, No. 3.


K879 - Tsavorite  sold

Merelani Hills, Arusha, Tanzania
Thumbnail - 1.9 x 1.4 x 1.3 cm



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Tsavorite Tsavorite Tsavorite

Glassy single Tsavorite crystal with good color and and top, glass-like surface luster. Some contacting on bottom edge and left side, but mostly a complete crystal. Good transparency too.


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