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Spangolite


Dark to emerald green, blue-green; light green in transmitted light. Named after Norman Spang (1842-1922), of Etna, Allegheny County, Pennsylvania, USA. 

A secondary mineral commonly occurring with other secondary copper minerals in oxidized zones of copper-bearing ore bodies. Cu6Al(SO4)(OH)12Cl•3(H2O)
The exact type locality is uncertain; the original specimen found “within a radius of 200 miles of Tombstone” (probably from Bisbee).

Hardness: 2.5-3 - Finger Nail-Calcite
Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).



FONTE: 
CRYSTALS MINERALS GEMSTONES FOSSILS ROCKS
foto minerais

Foto da Semana #7



Spangolite


Dark to emerald green, blue-green; light green in transmitted light. Named after Norman Spang (1842-1922), of Etna, Allegheny County, Pennsylvania, USA. 

A secondary mineral commonly occurring with other secondary copper minerals in oxidized zones of copper-bearing ore bodies. Cu6Al(SO4)(OH)12Cl•3(H2O)
The exact type locality is uncertain; the original specimen found “within a radius of 200 miles of Tombstone” (probably from Bisbee).

Hardness: 2.5-3 - Finger Nail-Calcite
Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).



FONTE: 
CRYSTALS MINERALS GEMSTONES FOSSILS ROCKS

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