Mixed Minerals — Marin Mineral

Mixed Minerals
May 7, 2025 · 10 specimens

R100 - Cuprian Smithsonite, Malachite after Azurite sold

Tsumeb, Namibia
Small Cabinet - 5.5 x 4.5 x 3.5 cm

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Cuprian Smithsonite, Malachite after Azurite

Exceedingly sharp pseudomorphs of Malachite after Azurite coated by a fine sugary druse of Cuprian Smithsonite. The largest pseudomorph is a doubly-terminated crystal 3.8cm long.

R101 - Analcime $750 available

Ljosa Quarry, Faroe Islands, Denmark
Miniature - 5 x 4 x 2.5 cm

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A wonderfully bright and transparent single Analcime on matrix from an uncommonly seen locality. The crystal is 3cm wide and aside from one shallow chip, is perfect and complete all around. Ex. Robert Batic collection with label.

R102 - Caledonite $950 available

Tiger, Pinal Co., Arizona, USA
Small Cabinet - 5.5 x 5 x 2 cm

(click on an image to enlarge)

Vibrant, translucent blue Caledonite crystals in vugs well distbuted across a matrix of massive Caledonite. A classic rarity from Tiger.

R103 - Shigaite in Selenite, Rhodochrosite sold

N'Chwanning Mine, Kuruman, South Africa
Small Cabinet - 5.5 x 4.5 x 2 cm

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Transparent Selenite with inclusions of yellow/orange Shigaite. The Selenite is adorned by a cluster of Rhodochrosite crystals on the front and another cluster on the back. This is rare material and I've only ever had one other.

R104 - Chromite sold

Freetown layered complex, Guma Water, Western Area, Sierra Leone
Thumbnail - 1.5 x 1.3 x 1.1 cm

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Rare, old, and large crystal of Chromite, a species not commonly seen in macro-sized crystals. This is a nearly complete octahedron with only one tip missing. Ex. Carl Acosta collection.

R105 - Microlite on Albite sold

Ipa Mine, Governador Valdares, Minas Gerais, Brazil
Thumbnail - 2.5 x 2.5 x 1.5 cm

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White Albite that is completely covered by brilliant, lustrous orange Microlite crystals. Largest crystal is 5mm. Ex. Herb Obodda, Carl Acosta collections.

R108 - Calcite $650 available

Fengjiashan Mine, Daye Co., Huangshi, Hubei, China
Miniature - 4.7 x 4.5 x 3.5 cm

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Glassy, transparent single Calcite crystal on matrix. Though there is some attached matrix on the top of the crystal, it is complete all around and undamaged. This is a fine Calcite of the highest quality. Much brighter with more presence in person.

R109 - Magnesite with Uvite $150 available

Brumado Mine, Bahia, Brazil
Thumbnail - 2.3 x 1.6 x 1.5 cm

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Fine single Magnesite crystal atop and with attached green Uvite (Tourmaline). Excellent thumbnail of Magnesite.

R113 - Stolzite $750 available

Broken Hill, NSW, Australia
Miniature - 5.0 x 3.9 x 2.2 cm

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Rare crystals of Stolzite to 3mm that stand out against the black matrix.

R114 - Topaz on Quartz (R) sold

Ouro Preto, Minas Gerais, Brazil
Miniature - 4.5 x 4.5 x 2.3 cm

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A 4.1cm Imperial Topaz crystal on a matrix of white Quartz. Any matrix Imperial Topaz is uncommon, but Topaz on Quartz are much rarer still. The crystal has excellent color and transparency and one repair about 1cm down from the termination.

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