Mixed Minerals — Marin Mineral

Mixed Minerals
August 6, 2019 · 12 specimens

D165 - Fluorite sold

Surprise Mine, Cook's Peak District, Luna Co., New Mexico, USA
Miniature - 4.2 x 3 x 2 cm

(click on an image to enlarge)

Transparent purple octdhedral Fluorite crystals to 2cm on edge. Great clarity - you can see right through them to the backside. Undamaged.

D166 - Pezzottaite sold

Sakavalana Mine, Ambatovita, Madagascar
Thumbnail - 2 x 1.5 x 0.5 cm

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Single complete Pezzottaite crystal (Caesium rich Beryl) with a raspberry red color and good transparency. The crystal has a broad, smooth front face with bevelled edges and a more etched and stepped growth on the backside. Undamaged, rare crystal.

D167 - Gold sold

Lake View & Star Mine, Kalgoorlie, Western Australia, Australia
Miniature - 3.8 x 3.2 x 2 cm

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Rich seam of Gold running up through the rock matrix. This specimen is from the collection of a mine Geologist who estimated there is about a half ounce of Gold in the specimen and also identified areas of Petzite and Calaverite. The entire specimen weighs 33.8 grams. With Gold currently trading at over $1400/ounce, there's an estimated $700 worth of Gold in the specimen.

D168 - Copper after Azurite sold

Copper Rose Mine, Grant Co., New Mexico, USA
Miniature - 3.5 x 3.5 x 1.7 cm

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A floater cluster of Azurite that has been completely replaced by Copper. Complete on both sides with well defined, sharp edges. A remarkable and fantastic specimen.

D169 - Copper after Azurite $200 available

Copper Rose Mine, Grant Co., New Mexico, USA
Thumbnail - 2.5 x 2.2 x 1.5 cm

(click on an image to enlarge)

A floater cluster of Azurite that has been completely replaced by Copper. Complete on both sides with well defined, sharp edges. A remarkable and fantastic specimen.

D170 - Proustite sold

Niederschlema, Bad Schlema, Erzgebirgskreis, Saxony, Germany
Thumbnail - 2.2 x 2 x 1.2 cm

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Cluster of Proustite crystals, complete all around with well defined, upright crystals. These are sometimes called 'ruby silvers' and show a bright cherry red color. Translucent and relatively undamaged with a couple potential contacts on the back side. Just released from an old collection. I took one shot with close overhead lighting and another with backlighting to show the translucent red color. A rare and historic specimen.

D172 - Montebrasite $280 available

Linopolis, Minas Gerais, Brazil
Thumbnail - 2.5 x 1.9 x 0.9 cm

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Splendid gem crystal of Montebrasite. Older specimen with good lustrous crystal faces all around, medium yellow color, and good transparency. Both sides shown. Undamaged.

D173 - Petalite sold

Momeik, Myanmar (Burma)
Thumbnail - 2.7 x 1.2 x 1.1 cm

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Rare crystal of transparent, smokey colored Petalite. Terminated crystal with good front and side faces and contacting on the lower back face.

D174 - Malachite over Cuprite $350 available

Ongonja, Seeis, Namibia
Thumbnail - 2.1 x 2 x 1.8 cm

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Well formed crystal of Cuprite covered with a thin coating of Malachite on a small amount of Calcite matrix. The Cuprite in these specimens are often transparent and faceted into gemstones. These are classics and now hard to find. The main crystal shows good well defined edges and is 2cm wide. There is a partial crystal on the back, which I actually like because it offers a window into the bright red Cuprite interior but does not detract when viewed from the front.

D175 - Malachite over Cuprite $260 available

Ongonja, Seeis, Namibia
Thumbnail - 2.5 x 1.7 x 1.5 cm

(click on an image to enlarge)

Well formed crystal of Cuprite with a thin coating of Malachite. The Cuprite in these specimens are often transparent and faceted into gemstones. These are classics and now hard to find. The crystal shows good well defined edges and is almost completely covered by Malachite. there is a small chip on the back that gives a window into the bright red Cuprite interior but does not detract when viewed from the front.

D178 - Rhodochrosite sold

N'Chwanning Mine, Kuruma, South Africa
Miniature - 3.5 x 3 x 2.5 cm

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Cluster of scalenohedral Rhodochrosite from the famous old finds at the N'Chwanning Mine. The crystals are transparent to translucent with a deep cherry red coloration. Very bright and translucent all the way through. A cluster of crystals with one more isolated crystal. There are a few cleaved tips but most are perfect and undamaged. Rare and hard to find specimen just released from a collection. A real jewel!

D179 - Rhodochrosite sold

N'Chwanning Mine, Kuruma, South Africa
Miniature - 3.2 x 2.5 x 2.3 cm

(click on an image to enlarge)

Cluster of large scalenohedral Rhodochrosite from the famous old finds at the N'Chwanning Mine. The crystals are transparent to translucent with a deep cherry red coloration. The crystal are perfect and stand upright, with only 1 smaller crystal showing a cleave at the tip. Rare and hard to find specimen just released from a collection.

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