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Callaghanite - Sierra Magnesite Mine, Gabbs, Gabbs Mining District, Nye Co., Nevada, USA(Type Locality) (#:MINS8368)

Very colorful intense lustrous rich deep blue Callaghanite in sub millimetric crystals richly covering the dark matrix.
A nice sample of this rare copper magnesium carbonate.Ex Francesco Bedognč coll. #290.

Formula :
Cu2Mg2[(OH)6/CO3] * 2 H2O
System: monoclinic Hardness:3-3½ Rarity:rare
Strunz id:5/E.07-10 - 5 : Nitrates, Carbonates & Borates
Name origin: Honors Dr. Eugene Callaghan (1904–1990), Director of the New Mexico Bureau of Mines, Socorro, New Mexico, USA, for his work on magnesite deposits.

Specimen weight:33 gr.
Crystal size:sub-mm xls
Overall size: 30mm x 32 mm x 29 mm

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Callaghanite - Sierra Magnesite Mine, Gabbs, Gabbs Mining District, Nye Co., Nevada, USA(Type Locality)

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