Marin Mineral Company - Selected Specimens

Selected Specimens

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LL587 - Quartz var. Ametrine $ 750
Anahi Mine, La Gaiba Mining District, Santa Cruz, Bolivia
cabinet - 11.8 x 4 x 3 cm

(click on an image to enlarge)
Quartz var. Ametrine from Anahi Mine, La Gaiba Mining District, Santa Cruz, Bolivia [db_pics/pics/LL587a.jpg]

Quartz var. Ametrine from Anahi Mine, La Gaiba Mining District, Santa Cruz, Bolivia [db_pics/pics/LL587b.jpg]

Quartz var. Ametrine from Anahi Mine, La Gaiba Mining District, Santa Cruz, Bolivia [db_pics/pics/LL587c.jpg]

Quartz var. Ametrine from Anahi Mine, La Gaiba Mining District, Santa Cruz, Bolivia [db_pics/pics/LL587e.jpg]

Large transparent crystal of Ametrine (Quartz that is part Amethyst and part Citrine). It has typical etched form with a flat faces on the termination. Color zones of purple and yellow can be sieen inside this transparent crystal. There are two small dings otherwise this is perfect and one of the better examples I've seen. Ex. Bob Reynolds collection.

LL647 - Labuntsovite $ 50
DeMix Quarry, Mont St. Hilaire, Quebec, Canada
thumbnail - 2.2 x 1.5 x 1 cm

(click on an image to enlarge)
Labuntsovite from DeMix Quarry, Mont St. Hilaire, Quebec, Canada [db_pics/pics/LL647a.jpg]

Labuntsovite from DeMix Quarry, Mont St. Hilaire, Quebec, Canada [db_pics/pics/LL647b.jpg]

Labuntsovite from DeMix Quarry, Mont St. Hilaire, Quebec, Canada [db_pics/pics/LL647c.jpg]

Prismatic red crystals of Labuntsovite in a small vug on matrix. The label indicates an 'unknown #5' is also present. Ex. Ex. Chuck Trantham collection.

LL335 - Churchite $ 50
Virginia, USA
thumbnail - 3 x 2 x 1 cm

(click on an image to enlarge)
Churchite from Virginia, USA [db_pics/pics/LL335a.jpg]

Churchite from Virginia, USA [db_pics/pics/LL335b.jpg]

Churchite from Virginia, USA [db_pics/pics/LL335c.jpg]

Small, fibrous white to yellow Churchite crystals on matrix. Ex. Chuck Trantham collection.

LL297 - Kentrolite $ 40
Big Chief Mine, Hillsboro, Sierra Co., New Mexico, USA
thumbnail - 2.5 x 2 x 1.5 cm

(click on an image to enlarge)
Kentrolite from Big Chief Mine, Hillsboro, Sierra Co., New Mexico, USA [db_pics/pics/LL297a.jpg]

Kentrolite from Big Chief Mine, Hillsboro, Sierra Co., New Mexico, USA [db_pics/pics/LL297b.jpg]

Kentrolite from Big Chief Mine, Hillsboro, Sierra Co., New Mexico, USA [db_pics/pics/LL297c.jpg]

Kentrolite from Big Chief Mine, Hillsboro, Sierra Co., New Mexico, USA [db_pics/pics/LL297d.jpg]

Black Kentrolite crystals on matrix. Kentrolite is a rare lead and manganese silicate mineral. Ex. Chuck Trantham collection.

LL662 - Olivenite $ 300
Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA
miniature - 3.8 x 3 x 1.5 cm

(click on an image to enlarge)
Olivenite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL662a.jpg]

Olivenite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL662b.jpg]

Olivenite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL662c.jpg]

Densely clustered crystals of Olivenite on matrix from the now defunct Majuba Hill Mine. Deep forest green crystals cover much of the matrix. There are some chipped crystals along the edges but the vast majority are perfect. This is an uncommonly rich example for the mine.

LL657 - Chalcophyllite $ 250
Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA
small cabinet - 5.5 x 4 x 2 cm

(click on an image to enlarge)
Chalcophyllite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL657a.jpg]

Chalcophyllite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL657b.jpg]

Chalcophyllite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL657c.jpg]

Blue green crystals of Chalcophyllite on matrix from the now defunct Majuba Hill Mine. Good crystals are present on both the front and back sides of the matrix.

LL678 - Amethyst $ 180
Las Vigas, Vera Cruz, Mexico
small cabinet - 5.9 x 3.5 x 2.5 cm

(click on an image to enlarge)
Amethyst from Las Vigas, Vera Cruz, Mexico [db_pics/pics/LL678a.jpg]

Amethyst from Las Vigas, Vera Cruz, Mexico [db_pics/pics/LL678b.jpg]

Amethyst from Las Vigas, Vera Cruz, Mexico [db_pics/pics/LL678c.jpg]

Amethyst from Las Vigas, Vera Cruz, Mexico [db_pics/pics/LL678d.jpg]

Amethyst from Las Vigas, Vera Cruz, Mexico [db_pics/pics/LL678.mp4]

Pair of glassy, transparent Amethyst crystals. Complete all around and undamaged, simple elegance.

LL675 - Quartz with Glaucophane inclusions $ 120
Mount Tamalpais, Marin Co., California, USA
small cabinet - 8 x 2 x 2 cm

(click on an image to enlarge)
Quartz with Glaucophane inclusions from Mount Tamalpais, Marin Co., California, USA [db_pics/pics/LL675a.jpg]

Quartz with Glaucophane inclusions from Mount Tamalpais, Marin Co., California, USA [db_pics/pics/LL675b.jpg]

Quartz with Glaucophane inclusions from Mount Tamalpais, Marin Co., California, USA [db_pics/pics/LL675d.jpg]

Double-terminated Quartz crystal with inclusions of blue/grey Glaucophane. These oddly shaped crystals were from a one time find about 10 years ago. Ex. Len Pisciotta collection.

LL672 - Clinoclase $ 400
Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA
small cabinet - 7.5 x 5.5 x 4 cm

(click on an image to enlarge)
Clinoclase from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL672a.jpg]

Clinoclase from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL672b.jpg]

Clinoclase from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL672c.jpg]

Deep blue crystals of Clinoclase on matrix from the now defunct Majuba Hill Mine. The area of crystals is 4cm wide. An excellent example for the locality and of the species.

LL680 - Amethyst $ 160
Las Vigas, Veracruz, Mexico
small cabinet - 7.4 x 6 x 3.5 cm

(click on an image to enlarge)
Amethyst from Las Vigas, Veracruz, Mexico [db_pics/pics/LL680a.jpg]

Amethyst from Las Vigas, Veracruz, Mexico [db_pics/pics/LL680b.jpg]

Amethyst from Las Vigas, Veracruz, Mexico [db_pics/pics/LL680c.jpg]

Amethyst from Las Vigas, Veracruz, Mexico [db_pics/pics/LL680d.jpg]

Amethyst from Las Vigas, Veracruz, Mexico [db_pics/pics/LL680h.jpg]

Thin shards of Quartz and silica rich matrix hosting beautiful, undamaged Amethyst crystals. Main crystal is 4cm and double-terminated. Ex. Chuck Trantham and Al McGuinness collections.

LL709 - Neptunite with Benitoite $ 275
Gem Mine, San Benito Co., California, USA
thumbnail - 2.7 x 2 x 1.5 cm

(click on an image to enlarge)
Neptunite with Benitoite from Gem Mine, San Benito Co., California, USA [db_pics/pics/LL709a.jpg]

Neptunite with Benitoite from Gem Mine, San Benito Co., California, USA [db_pics/pics/LL709b.jpg]

Neptunite with Benitoite from Gem Mine, San Benito Co., California, USA [db_pics/pics/LL709c.jpg]

Neptunite with Benitoite from Gem Mine, San Benito Co., California, USA [db_pics/pics/LL709e.jpg]

Well terminated Neptunite crystal with two attached Benitoite crystals.

LL659 - Clinoclase on Cornubite ~~$ 200~~ DISCOUNTED 50% OFF TO $ 100
Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA
miniature - 4.7 x 3 x 2.5 cm

(click on an image to enlarge)
Clinoclase on Cornubite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL659a.jpg]

Clinoclase on Cornubite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL659b.jpg]

Clinoclase on Cornubite from Copper Stope, Majuba Hill Mine, Pershing Co., Nevada, USA [db_pics/pics/LL659c.jpg]

Deep blue crystals of Clinoclase over green Cornubite from the now defunct Majuba Hill Mine. Both the front and back have great crystals.

LL738 - Benitoite $ 450
Gem Mine, San Benito Co., California, USA
thumbnail - 2 x 1.8 x 1.3 cm

(click on an image to enlarge)
Benitoite from Gem Mine, San Benito Co., California, USA [db_pics/pics/LL738a.jpg]

Benitoite from Gem Mine, San Benito Co., California, USA [db_pics/pics/LL738b.jpg]

Benitoite from Gem Mine, San Benito Co., California, USA [db_pics/pics/LL738c.jpg]

Benitoite from Gem Mine, San Benito Co., California, USA [db_pics/pics/LL738d.jpg]

Single Benitoite with 'textbook' form. Benitoite is the only mineral that crystallizes in the trigonal bipyramidal form, a form that was only hypothesized prior to it's discovery. Here you have a perfect example of the rare form (and a rare mineral). It looks almost like a crystal model. Thick and complete all around, with Crossite inclusions.

LL730 - Gahnite rough and cut $ 350
Kagoro, Kaduna State, Nigeria
thumbnail - 0.6 x 0.6 x 0.6 cm

(click on an image to enlarge)
Gahnite rough and cut from Kagoro, Kaduna State, Nigeria [db_pics/pics/LL730a.jpg]

Gahnite rough and cut from Kagoro, Kaduna State, Nigeria [db_pics/pics/LL730b.jpg]

Gahnite rough and cut from Kagoro, Kaduna State, Nigeria [db_pics/pics/LL730c.jpg]

Rough and cut set of transparent blue Gahnite. Gahnite is the zinc rich end member and one of the rarer species in the Spinel group of minerals. The crystal is a complete octahedron with one tiny chip on one tip, otherwise perfect and translucent to transparent internally. The gemstone is 4.5mm wide. These were first discovered in 2001 and are found mostly of industrial quality. Though they don't get very large, the color is spectacular. The GIA has written a nice article about these crystals published in Gems & Gemology, Fall 2019, Vol. 55, No. 3.

LL811 - Cuprian Adamite $ 900
Mina Ojuela, Mapimi, Durango, Mexico
miniature - 4.5 x 4 x 3.5 cm

(click on an image to enlarge)
Cuprian Adamite from Mina Ojuela, Mapimi, Durango, Mexico [db_pics/pics/LL811a.jpg]

Cuprian Adamite from Mina Ojuela, Mapimi, Durango, Mexico [db_pics/pics/LL811b.jpg]

Cuprian Adamite from Mina Ojuela, Mapimi, Durango, Mexico [db_pics/pics/LL811c.jpg]

Cuprian Adamite from Mina Ojuela, Mapimi, Durango, Mexico [db_pics/pics/LL811e.jpg]

Limonite vug filled with colorless Calcite and green Cuprian Adamite crystals. This is a particularly fine example sporting large, undamaged crystals of great beauty. The crystal group at the front left is 2cm in size, with an individual crystal 1.2cm in size. The vug itself is lined with black Plattnerite which provides a stunning backdrop to the green and white crystals. (click on a page number to go to that page:)

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