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Hewettite with Fervanite - Gold Quarry Mine, Maggie Creek Subdistrict, Carlin Trend, Eureka Co., Nevada, USA (#:MINS7693)

Interesting specimen with red-brown Hewettite xls up to 1 mm with minor brown Fervanite xls in association.

Formula :
Ca[V2O6/V4O10] * 9 H2O
System: monoclinic Hardness:- Rarity:not common
Strunz id:IV/G.12-40 - OXIDES and HYDROXIDES
Name origin: For American geologist Donnel Foster Hewett (1881-1971), U.S. Geological Survey, who studied the mineralogy of Minasragra, Cerro de Pasco, Peru.

Specimen weight:24 gr.
Crystal size:Up to 1 mm
Overall size: 42mm x 20 mm x 28 mm

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Hewettite with Fervanite - Gold Quarry Mine, Maggie Creek Subdistrict, Carlin Trend, Eureka Co., Nevada, USA

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