Mixed Minerals — Marin Mineral

Mixed Minerals
April 28, 2026 · 15 specimens

R939 - Scheelite sold

Sam Springs area, White Mountains, Inyo Co., California, USA
Miniature - 3.7 x 3.7 x 2.6 cm

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Single orange Scheelite crystal from the White Mountains of southeastern California. This is a fantastic California Scheelite for color and size. While Scheelite is not uncommon in California, it usually occurs as white to colorless crystals from places such as Darwin or the Black Morel Mine. This a richly colored crystal recently collected and though not perfect, has good crystal faces on 6 of 8 sides.

R940 - Tsavorite on Prehnite sold

Merelani Hills, Arusha, Tanzania
Miniature - 5 x 3.5 x 3.5 cm

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Amazing and rare combination of yellow Prehnite with green Tsavorite. The Prehnite occurs as light yellow, bunched clusters of crystals with some attached Graphite on the bottom and small attached Pyrite crystals and Titanite. The Tsavorite are elongated faden crystals to 2.5cm long. Well crystallized on all sides. I've never seen one like it! A must for a Merelani collection.

R941 - Garnet $280 available

Latah Co., Idaho, USA
Thumbnail - 1.4 x 1.2 x 1 cm

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Rounded single crystal of gem quality purple garnet. These are usually cut into gemstones but I like it as an unsual USA mineral specimen. I'm told this deposit is now exhausted. Weighs 16.8 carats.

R942 - Garnet $250 available

Latah Co., Idaho, USA
Thumbnail - 1.3 x 1.1 x 1 cm

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Rounded single crystal of gem quality purple garnet. These are usually cut into gemstones but I like it as an unsual USA mineral specimen. I'm told this deposit is now exhausted. Weighs 15 carats.

R943 - Garnet $230 available

Latah Co., Idaho, USA
Thumbnail - 1.0 x 1.0 x 0.9 cm

(click on an image to enlarge)

Rounded single crystal of gem quality purple garnet. These are usually cut into gemstones but I like it as an unsual USA mineral specimen. I'm told this deposit is now exhausted. Weighs 15 carats.

R944 - Garnet $200 available

Latah Co., Idaho, USA
Thumbnail - 1.4 x 1.2 x 1 cm

(click on an image to enlarge)

Rounded single crystal of gem quality purple garnet. These are usually cut into gemstones but I like it as an unsual USA mineral specimen. I'm told this deposit is now exhausted. Weighs 12.25 carats.

R945 - Fluorite on Sphalerite $95 available

Elmswood Mine, Carthage, Tennessee, USA
Thumbnail - 2.5 x 2 x 1.5 cm

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Three purple Fluorite cubes attached to a red Sphalerite crystal. The Fluorite is a rich translucent purple. The Sphalerite is crystallized all around.

R946 - Fluorite with Sphalerite $150 available

Elmswood Mine, Carthage, Tennessee, USA
Thumbnail - 1.5 x 1.5 x 1.4 cm

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Single purple Fluorite cube with attached red Sphalerite. The Fluorite is complete all around and undamaged and translucent.

R947 - Quartz var. Agate $225 available

Mexico
Miniature - 5 x 4.4 x 1.5 cm

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Banded Mexican agate, polished on the front face, natural on the back.

R948 - Pyrite with Sphalerite $150 available

Huanzala Mine, Ancash, Peru
Cabinet - 10 x 7 x 4 cm

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Mound of bright, brassy Pyrite crystals from the Huanzala mine in Peru. Crystals of black Sphalerite are sprinkled on the surface of the Pyrite crystals.

R949 - Ruby on Calcite $1,800 available

Dattaw, Mogok Valley, Myanmar
Miniature - 5 x 3.2 x 3 cm

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Thick, well terminated Ruby crystal sticking up out of white Calcite. The Ruby crystal is 1.5cm wide and extends up out of the Calcite 1.2cm tall. Complete and undamaged translucent crystal. Ex. Ed Maccubbin collection.

R950 - Neptunite $280 available

Gem Mine, San Benito Co., California, USA
Small Cabinet - 9 x 6 x 3.5 cm

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Black Neptunite crystals and white natrolite atop a blue schist matrix. The Neptunite reach 2cm in size and include a wonderful 1.5cm doubly terminated crystal.

R951 - Grossular on Calcite $95 available

Kajiado Co., Kenya
Miniature - 3.7 x 3.5 x 2.5 cm

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Highly colorful specimen featuring orange Grossular crystals on bright, translucent blue Calcite. The main Grossular crystal is 2cm in size, well crystallied on the front half and incomplete on the back.

R952 - Copper $250 available

Ray Mine, Pinal Co., Arizona, USA
Small Cabinet - 7.5 x 4.5 x 2.5 cm

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Cluster of Copper crystals from the Ray Mine. The Copper has a dark red patina and attached white Calcite.

R953 - Celestite $120 available

Lafarge Quarry, Crittenden Co., Kentucky, USA
Thumbnail - 2.2 x 2 x 1.5 cm

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Bi-color (yellow and blue) single Celestite crystal with high glassy luster. Complete and undamaged though with a small indent on the backside where another crystal grew. This locality is located south of the Ohio River from the Cave-in-Rock area of Illinois.

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