Mixed Minerals — Marin Mineral

Mixed Minerals
May 14, 2025 · 13 specimens

R138 - Fluorite $800 available

Yaogangxian Mine, Hunan, China
Small Cabinet - 7 x 4.5 x 3 cm

(click on an image to enlarge)

Gem transparent Fluorite crystals without matrix. These are fine, undamaged blue/green cubic crystals with phantoms. The two main crystals are aligned side-by-side and the internal purple phantoms give the appearance of eyes. Photos don't do justice to the brightness and transparency of these crystals! You can see right through the crystals. From older finds.

R140 - Whewellite, Ankerite $650 available

Kladno, Central Bohemia, Czech Republic
Miniature - 5.0 x 4.5 x 4.5 cm

(click on an image to enlarge)

Uncommon matrix Whewellite from the Czech Republic. A breccia fragment sprinkled on all sides by white Ankerite crystals with a white, twin Whewellite crystal 1.5cm in size. Whewellite is a rare organic species that is seldom seen on matrix, especially with a crystal that stands upright on the matrix such as this one. Comes with a couple old collection labels.

R141 - Rhodochrosite with Stilbite, Sphalerite, Chalcopyrite $350 available

Davidkovo, Bulgaria
Small Cabinet - 8.5 x 7 x 4.0 cm

(click on an image to enlarge)

Rhodochrosite with Stilbite, Sphalerite, Chalcopyrite

Neat and colorful specimen of Rhodochrosite crystals with tan-colored Stilbite crystals, dark Sphalerite, and bright metallic Chalcopyrite crystals.

R142 - Amazonite $350 available

Pike's Peak, Colorado, USA
Small Cabinet - 6 x 5 x 4.5 cm

(click on an image to enlarge)

Cluster of Amazonite crystals with particularly rich blue/green coloration. The main crystal is also partially doubly-terminated. Complete all around and undamaged. Comes with an old collection label for the collection of simply 'Wolf'.

R143 - Microlite $3,750 available

Macoa, Alto Ligonha Pegmatite Field, Zambezia Prov., Mozambique
Thumbnail - 2 x 1.6 x 1.3 cm

(click on an image to enlarge)

Large single crystal of Microlite from Alto Ligonha. Translucent red with sharp edges, this is one of the better, larger crystals I've seen from the find. The label shows it as Fluorcalciomicrolite but I have also seen these sold as Oxystannomicrolite. Ex. Carl Acosta collection.

R144 - Buergerite $280 available

Mexquitic, San Luis Potosi, Mexico
Thumbnail - 3.0 x 2.5 x 2.0 cm

(click on an image to enlarge)

Fine thumbnail-sized specimen of Buergerite (FluorBuergerite). Numerous shiny, dark brown crystals to 9mm are scattered on the surface. Beugerite is a rare species in the Tourmaline group. This locality (the Type locality) produces the world's best specimens. Interestingly, this locality was once lost for many years and later rediscovered.

R146 - Turquoise sold

Kingman, Cerbat Mountains, Mohave County, Arizona, USA
Miniature - 4.2 x 3.5 x 1.1 cm

(click on an image to enlarge)

Nodule of rich blue Turquoise from the famous Kingman mine in Arizona. Sawcut on one side revealing the fine, uniform blue color inside. Fine display quality Turquoise specimen.

R147 - Calcite $180 available

Newport Quarry, Newport, Monroe County, Michigan, USA
Miniature - 4.8 x 3 x 3 cm

(click on an image to enlarge)

Stacked cluster of doubly-terminated yellow Calcite crystals from an abandoned quarry in Michigan. Well-crystallized all around and undamaged. Has an old collection number glued to it near the base.

R148 - Olmiite $1,250 available

N'Chwanning Mine, Kuruman, South Africa
Miniature - 5 x 4 x 3.5 cm

(click on an image to enlarge)

Large 3.5cm spherical cluster of Olmiite on matrix. This is a complete, undamaged cluster. The color changes from tan to more reddish under different lighting conditions. Small pink/white spheres of Xonotlite are present around the base.

R149 - Pyrite on Calcite sold

Dal'negorsk, Russia
Small Cabinet - 6 x 4.5 x 4.5 cm

(click on an image to enlarge)

Highly attractive cluster of Calcite crystals with their edges rimmed by sparkling Pyrite. An undamaged mound of tabular crystals. The Pyrite is both golden and irridescent. Ex. Carl Acosta collection.

R150 - Azurite, Chlorargyrite on Malachite $1,800 available

Broken Hill, New South Wales, Australia
Small Cabinet - 8 x 4 x 0.8 cm

(click on an image to enlarge)

Thin, flat matrix of Malachite covered by sparkling blue Azurite crystals and olive green Chlorargyrite crystals. The Azurite are especially bright and translucent. Has a few old collection numbers glued to the back. Ex. Carl Acosta collection.

R151 - Copper sold

Tsumeb, Namibia
Miniature - 4.5 x 3.0 x 2 cm

(click on an image to enlarge)

Outstanding Tsumeb Copper specimen featuring feather-like Copper crystals in a sculptural formation on matrix. Ex. Carl Acosta collection.

R152 - Thometzekite on Anglesite $3,500 available

Tsumeb, Namibia
Miniature - 4.5 x 4 x 2 cm

(click on an image to enlarge)

Green coatings of Thometzekite on two sharp, well formed Anglesite crystals. There are two main crystals, with the smaller crystal on the left being slightly more robust at 1cm thick. The label also notes the presence of yellow Vanackerite on the specimen. Ex. Carl Acosta, Alex Neufeld, Dan Behnke collections.

« All updates