Mixed Minerals — Marin Mineral

Mixed Minerals
June 7, 2023 · 12 specimens

AU581 - Pyromorphite sold

Wheatley Mine, Phoenixville, Chester Co., Pennsylvania, USA
Miniature - 3.5 x 3.5 x 2.2 cm

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Cluster of olive green Pyromorphite crystals from the historic Wheatley Mine in Pennsylvania. The specimen is all Pyromorphite and has crystals all around - it's a near floater with just one small point of contact at the rear base. A USA classic from a historic old Lead and Silver mine. In excellent condition, espcially considering this piece could date back to the 1800s. Has a small plastic display stand attached to the back. Ex. Bob Reynolds collection.

AU584 - Molybdenite sold

Wolfram Camp Mine, Queensland, Australia
Small Cabinet - 7.5 x 4.5 x 3 cm

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A sharp 2.5cm single Molybdenite crystal in crystalline white Quartz. A perfect single hexagon, which is less common for this locality as compared to the more typical thick aggregates of crystals. This could be trimmed down to a fine miniature.

AU586 - Copper $250 available

Poteryaevskoe Mine, Rubtsovskoe Deposit, Western Siberia, Russia
Miniature - 3.3 x 2 x 1.2 cm

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Well crystallized Copper specimen from Russia with a superb tall single crystal rising up in the center. Sharply formed crystals all around.

AU587 - Diopside on Graphite $350 available

Merelani Hills, Arusha, Tanzania
Miniature - 3.7 x 2.5 x 1.8 cm

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Three thick green Diopside crystals on crystallized Graphite from the Merelani Tanzanite mines. All 3 crystals are well terminated and the larger two crystals point in opposite directions.

AU588 - Boracite $450 available

Boulby Potash Mine, Loftus, Cleveland, England
Miniature - 4.5 x 3.5 x 1.3 cm

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Bright, sparkling crystals of blue Boracite on the front and back of specimen. The crystals are good sized reaching 4mm in diameter. Colorful and rich example of essentially nothing but Boracite crystals.

AU589 - Tremolite $1,250 available

Merelani Hills, Arusha, Tanzania
Miniature - 4.8 x 2.7 x 1.1 cm

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Large single green Tremolite crystal from the Merelani Tanzanite mines. This is a big one with a smooth, flat termination face and typical splintery edges. Gemmy with superb, vivid green coloration. These are only occassionally found and usually in smaller sizes - at nearly 5cm tall this is much bigger than most. I have seen some longer than 4.8cm, but they are usually thinner crystals - this one is thick and robust.

AU590 - Heliodor sold

Bahia, Brazil
Thumbnail - 2.3 x 2.2 x 1.4 cm

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Single gem Heliodor crystal from Brazil. This is nearly all transparent, facet quality Heliodor with top saturated pure yellow color. Well terminated and complete all around. There is a small area of contact/growth interuption (not damage) along one termination edge, otherwise it's perfect. Ex. Steve Smale collection with his old label. Weighs 62.4 carats (Note that this crystal has significant gem rough value. A hypothetical 35% yield would give 21 carats in gems, and with top color Heliodor selling for $150-$200/carat, a hypothetical $3,150-$4,200 value).

AU591 - Caledonite with Cerussite sold

Mammoth St Anthony Mine, Tiger, Pinal Co., Arizona, USA
Miniature - 4 x 3 x 1.8 cm

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Vibrant, translucent blue Caledonite crystals with white, reticulated Cerussite. A classic rarity from Tiger.

AU592 - Cuprite sold

Cornwall, England
Thumbnail - 2.5 x 1.5 x 1.5 cm

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Translucent red Cuprite crystals on matrix from Cornwall. Quality thumbnail with crystals to 1cm in size. Undamaged.

AU593 - Gratonite sold

Excelsior Mine, Cerro de Pasco, Peru
Thumbnail - 2 x 1.8 x 1.2 cm

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Silvery colored cluster of Gratonite, a rare lead arsenic sulfide. Well formed bright crystals spraying out in all directions. This is an uncommon matrix specimen (most are loose clusters without matrix). There are some missing crystals that don't really detract from the overall aesthetic of this cute thumbnail.

AU594 - Amethyst $400 available

Las Vigas, Vera Cruz, Mexico
Cabinet - 10 x 8.5 x 6 cm

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Colorful, fine quality Amethyst specimen from Las Vigas. The Amethyst occur on a highly textured matrix colored green by coatings of Epidote that creates a great color contrast against the deep purple Amethyst. The Amethyst are mostly doubly-terminated, undamaged, and highly transparent. The largest crystal is 3.3cm long. Great specimen that's a little different looking than your average Las Vigas Amethyst.

AU595 - Brucite $650 available

Killa Saifullah, Balochistan, Pakistan
Cabinet - 11 x 4.5 x 3.5 cm

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Bright lemon yellow Brucite crystals from the original finds of a couple years ago. This specimen has a first generation of more whitish yellow Brucite that is covered with more well crystallized, bright yellow translucent Brucite. These recent specimens from Pakistan are world's best for the species. Comes with a custom Sunnywood base (a $200 value).

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