Marin Mineral Company - Selected Specimens

Selected Specimens

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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.

LL632 - McGuinnessite, Vuagnatite $ 50
Copper King Mine, Red Mountain, Mendocino Co., California, USA
thumbnail - 2 x 1.5 x 1 cm

(click on an image to enlarge)
McGuinnessite, Vuagnatite from Copper King Mine, Red Mountain, Mendocino Co., California, USA [db_pics/pics/LL632a.jpg]

McGuinnessite, Vuagnatite from Copper King Mine, Red Mountain, Mendocino Co., California, USA [db_pics/pics/LL632b.jpg]

McGuinnessite, Vuagnatite from Copper King Mine, Red Mountain, Mendocino Co., California, USA [db_pics/pics/LL632c.jpg]

McGuinnessite, Vuagnatite from Copper King Mine, Red Mountain, Mendocino Co., California, USA [db_pics/pics/LL632d.jpg]

Bubbly blue/green McGuinnessite on matrix. McGuinnessite is a rare manganese, copper, carbonate and this specimen is from the type locality of the Copper King Mine in the Red Mountain Mining District. Ex. Chuck Trantham collection. Self collected by Chuck and Al McGuinness in 1982.

LL366 - Lawsonite $ 80
Reed Station, Tiburon, Marin Co., California, USA
cabinet - 10.5 x 4.5 x 2.5 cm

(click on an image to enlarge)
Lawsonite from Reed Station, Tiburon, Marin Co., California, USA [db_pics/pics/LL366a.jpg]

Lawsonite from Reed Station, Tiburon, Marin Co., California, USA [db_pics/pics/LL366b.jpg]

Lawsonite from Reed Station, Tiburon, Marin Co., California, USA [db_pics/pics/LL366c.jpg]

Lawsonite from Reed Station, Tiburon, Marin Co., California, USA [db_pics/pics/LL366d.jpg]

Glaucophane schist matrix hosting crystals of blue Lawsonite. Large crystals to 2cm in size. Old specimen from the type locality for the species, collected by Chuck Trantham back in 1968. Rare stuff! 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.

LL682 - Pyrite on Fluorite $ 150
Villabona Mine, Llanera, Asturias, Spain
small cabinet - 5.5 x 3.5 x 2 cm

(click on an image to enlarge)
Pyrite on Fluorite from Villabona Mine, Llanera, Asturias, Spain [db_pics/pics/LL682a.jpg]

Pyrite on Fluorite from Villabona Mine, Llanera, Asturias, Spain [db_pics/pics/LL682c.jpg]

Pyrite on Fluorite from Villabona Mine, Llanera, Asturias, Spain [db_pics/pics/LL682d.jpg]

Pyrite on Fluorite from Villabona Mine, Llanera, Asturias, Spain [db_pics/pics/LL682e.jpg]

Pyrite on Fluorite from Villabona Mine, Llanera, Asturias, Spain [db_pics/pics/LL682f.jpg]

Translucent yellow Fluorite cubes with one side of specimen covered by tiny, sparkling Pyrite crystals. The photos don't properly capture the beauty of this specimen.

LL623 - Brochantite $ 600
Milpillas Mine, cuitaca, Sonora, Mexico
miniature - 4.6 x 3.3 x 2.3 cm

(click on an image to enlarge)
Brochantite from Milpillas Mine, cuitaca, Sonora, Mexico [db_pics/pics/LL623a.jpg]

Brochantite from Milpillas Mine, cuitaca, Sonora, Mexico [db_pics/pics/LL623b.jpg]

Brochantite from Milpillas Mine, cuitaca, Sonora, Mexico [db_pics/pics/LL623c.jpg]

Brochantite from Milpillas Mine, cuitaca, Sonora, Mexico [db_pics/pics/LL623f.jpg]

Jackstraw cluster of large Brochantite crystals. Main crystal is a large 4.6cm in length. The crystals have a bright, electric green coloration. This mine is now closed and no more will be coming out.

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.

LL679 - Smithsonite $ 150
Choix, Sinaloa, Mexico
miniature - 5 x 4.5 x 3 cm

(click on an image to enlarge)
Smithsonite from Choix, Sinaloa, Mexico [db_pics/pics/LL679a.jpg]

Smithsonite from Choix, Sinaloa, Mexico [db_pics/pics/LL679b.jpg]

Smithsonite from Choix, Sinaloa, Mexico [db_pics/pics/LL679c.jpg]

Satiny, botryoidal Smithsonite from Choix. Undamaged with a well saturated purple/pink coloration. Ex. Len Pisciotta collection.

LL635 - Adularia $ 150
Sella, St. Gotthard, Switzerland
small cabinet - 6.8 x 4.8 x 3 cm

(click on an image to enlarge)
Adularia from Sella, St. Gotthard, Switzerland [db_pics/pics/LL635a.jpg]

Adularia from Sella, St. Gotthard, Switzerland [db_pics/pics/LL635b.jpg]

Adularia from Sella, St. Gotthard, Switzerland [db_pics/pics/LL635c.jpg]

Adularia from Sella, St. Gotthard, Switzerland [db_pics/pics/LL635d.jpg]

Translucent to transparent 2.5cm Adularia crystal on matrix. High quality, lustrous crystal out of the Chuck Trantham collection and comes with a very old label.

LL270 - Pyrite $ 60
Live Oak Pit, Inspiration Mine, Miami, Gila Co., Arizona, USA
thumbnail - 3 x 2.5 x 2 cm

(click on an image to enlarge)
Pyrite from Live Oak Pit, Inspiration Mine, Miami, Gila Co., Arizona, USA [db_pics/pics/LL270a.jpg]

Pyrite from Live Oak Pit, Inspiration Mine, Miami, Gila Co., Arizona, USA [db_pics/pics/LL270b.jpg]

Pyrite from Live Oak Pit, Inspiration Mine, Miami, Gila Co., Arizona, USA [db_pics/pics/LL270c.jpg]

Pyrite from Live Oak Pit, Inspiration Mine, Miami, Gila Co., Arizona, USA [db_pics/pics/LL270d.jpg]

Single octahedral Pyrite crystal from teh famous Inspiration Mine in Arizona. Ex. Chuck Trantham collection acquired by Chuck at the Tucson show in 2001.

LL729 - Gahnite rough and cut $ 280
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/LL729a.jpg]

Gahnite rough and cut from Kagoro, Kaduna State, Nigeria [db_pics/pics/LL729b.jpg]

Gahnite rough and cut from Kagoro, Kaduna State, Nigeria [db_pics/pics/LL729c.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 a round 3mm 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.

LL717 - Diaspore $ 350
Pinarcik, Mugla Prov., Turkey
thumbnail - 1 x 1 x 0.4 cm

(click on an image to enlarge)
Diaspore from Pinarcik, Mugla Prov., Turkey [db_pics/pics/LL717a.jpg]

Diaspore from Pinarcik, Mugla Prov., Turkey [db_pics/pics/LL717b.jpg]

Diaspore from Pinarcik, Mugla Prov., Turkey [db_pics/pics/LL717c.jpg]

V-twin crystal of color change Diaspore. From new finds in the mountains near Milas, these new Diaspore crystals are spectacular in color and form. Glassy, flat termination faces on both 'arms'. Good V form, complete and undamaged with just a tiny contact at the very bottom tip. Gem quality and transparent inside. Medium purple color in natural sunlight.

LL720 - Diaspore $ 300
Pinarcik, Mugla Prov., Turkey
thumbnail - 1 x 1 x 0.3 cm

(click on an image to enlarge)
Diaspore from Pinarcik, Mugla Prov., Turkey [db_pics/pics/LL720a.jpg]

Diaspore from Pinarcik, Mugla Prov., Turkey [db_pics/pics/LL720b.jpg]

Diaspore from Pinarcik, Mugla Prov., Turkey [db_pics/pics/LL720c.jpg]

V-twin crystal of color change Diaspore. From new finds in the mountains near Milas, these new Diaspore crystals are spectacular in color and form. Glassy, flat termination faces on both 'arms'. Good V form, complete and undamaged. Gem quality and transparent inside. Medium purple color in natural sunlight.

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97	98	99	*100*	*101*	*102*	*103*	*104*	*105*	*106*	*107*	*108*
*109*	*110*	*111*	*112*	*113*	*114*	*115*	*116*	*117*	*118*	*119*	*120*
*121*	*122*	*123*	*124*	*125*	*126*	*127*	*128*	*129*	*130*	*131*	*132*
*133*	*134*	*135*	*136*	*137*	*138*	*139*	*140*	*141*	*142*	*143*

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