Sphalerite Var Marmatite and Pyrite, Eagle Mine, Gilman, Gilman Mining Dist., Eagle County, Colorado, USA

$125.00

Size: 3.7x3.5x1.3cm

Species: Sphalerite Var Marmatite with Pyrite

Locality: Eagle Mine Gilman, Gilman Mining Dist., Eagle County, Colorado, USA

Description: Marmatite is an iron rich variety of sphalerite. Here it is shown in as euhedral lustrous black crystals in an aesthetically pleasing combination with contrasting brassy pyrite. Not a rarity by any means from this locality which is well known for both minerals in Colorado, but a pleasing specimen nonetheless for its quality of both species. Minor coatings of chalcopyrite are observed on some of the pyrite under a microscope.

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Size: 3.7x3.5x1.3cm

Species: Sphalerite Var Marmatite with Pyrite

Locality: Eagle Mine Gilman, Gilman Mining Dist., Eagle County, Colorado, USA

Description: Marmatite is an iron rich variety of sphalerite. Here it is shown in as euhedral lustrous black crystals in an aesthetically pleasing combination with contrasting brassy pyrite. Not a rarity by any means from this locality which is well known for both minerals in Colorado, but a pleasing specimen nonetheless for its quality of both species. Minor coatings of chalcopyrite are observed on some of the pyrite under a microscope.

Size: 3.7x3.5x1.3cm

Species: Sphalerite Var Marmatite with Pyrite

Locality: Eagle Mine Gilman, Gilman Mining Dist., Eagle County, Colorado, USA

Description: Marmatite is an iron rich variety of sphalerite. Here it is shown in as euhedral lustrous black crystals in an aesthetically pleasing combination with contrasting brassy pyrite. Not a rarity by any means from this locality which is well known for both minerals in Colorado, but a pleasing specimen nonetheless for its quality of both species. Minor coatings of chalcopyrite are observed on some of the pyrite under a microscope.

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