Rhodochrosite

Uchucchacua Mine | Oyon | Lima Department | Peru

Size: 6.6 x 5.4 x 2.9 cm

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This is an excellent Peruvian Rhodochrosite specimen from the Uchucchacua Mine, which is well-known for Silver and Rhodochrosite. Deep raspbe ...

Malachite

Hohenlimburg Quarry | Hohenlimburg | Hagen | North Rhine-Westphalia | Germany

Size: 4.8 x 3.4 x 2.8 cm

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This is an exceptionally beautiful Malachite specimen from the Hohenlimburg limestone quarry near the town of Hagen in northwest Germany. Sev ...

Glaukosphaerite

Kasompi Mine | Mutshatsha | Lualaba | Dem. Rep. of Congo

Size: 6.9 x 4.9 x 2.2 cm

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Glaucosphaerite is an extremely rare Copper-Nickel Carbonate and this exceptional specimen is literally covered in light green, acicular Glau ...

Glaucodot

Tunaberg | Nyköping | Södermanland County | Sweden

Size: 1.4 x 1.0 x 0.9 cm

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A textbook crystallized Glaucodot crystal associated with two smaller "cousins" from the world-famous Swedish site of Tunaberg. Although the ...

Gahnite

Franklin Mine | Franklin | Sussex Co. | New Jersey | USA

Size: 3.0 x 2.2 x 2.1 cm

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A jet-black Gahnite octahedron perched on a Calcite cleave from the famous Franklin Mine in New Jersey. Gahnite is a relatively rare Zinc-Alu ...

Prehnite

La Combe de la Selle | St-Christophe-en-Oissans | Grenoble | Isére | France

Size: 5.5 x 4.1 x 2.4 cm

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Beautiful hemispheric cluster of countless, slightly curved, sharp Prehnite crystals with excellent vitreous luster. The crystals are translu ...

Matlockite

Bage Mine | Cromford | Matlock | Derbyshire | England

Size: 2.2 x 1.8 x 1.3 cm

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This is a very excellent of the extremely rare Lead mineral Matlockite, which was first discovered in the middle of the 19th century and name ...

Bayldonite pseudomorph after Mimetite

Tsumeb Mine (Tsumcorp Mine) | Tsumeb | Otjikoto Region | Namibia

Size: 3.0 x 1.8 x 1.0 cm

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Here is another classic Tsumeb specimen: a highly coveted pseudomorph of Bayldonite after Mimetite. A super aesthetic, 3 cm tall spray of bri ...

Niobophyllite Ex Anka & Uli Bahmann coll

Mount Malosa | Zomba Plateau | Malawi

Size: 6.5 x 3.1 x 1.5 cm

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Here we have a wonderful piece of a Niobophyllite crystal, nicely exposed on Microcline matrix. Niobophyllite is an EXTREMELY RARE species co ...

Dolomite Ex Dr. Joachim Jahn coll.

Cantera Azcárate | Eugui | Pamplona | Navarre | Spain

Size: 7.2 x 6.3 x 5.2 cm

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Dolomite is generally considered a rather boring whitish, grayish, beige mineral, mainly a matrix mineral for any other "more interesting" sp ...

Cuprite

Kombat Mine | Kombat | Grootfontein | Otjozondjupa Region | Namibia

Size: 5.9 x 3.6 x 2.8 cm

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An extremely fine specimen consisting of a rich Copper ore matrix with a wide open vug. The cavity is richly covered with distinctly dark red ...

Chabazite-Ca Ex Dr. N. Pesl collection

Maglovec Quarry | Vyšná Šebastová | Prešov District | Slovakia

Size: 9.1 x 5.6 x 3.9 cm

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A very fine specimen of Chabazite from Maglovec Quarry, an active stone pit where Andesite and Dioritporphyrite is mined. The place is known ...