Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Chalcocite from
Vale das Gatas Mines (São Lourenço de Riba Pinhão and Souto Maior), Sabrosa, Vila Real, Portugal


Locality type:Mine
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Vale das Gatas Mines (São Lourenço de Riba Pinhão and Souto Maior), Sabrosa, Vila Real, Portugal
Data Identifiers
Mindat Occurrence Record ID:968319
Long-form Identifier:1:3:968319:8
GUID (UUID V4):0
References
Gaspar, O., Bowles, J. F. W., Shepherd, T. J. (1987) Silver mineralization at the Vale das Gatas tungsten mine, Portugal. Mineralogical Magazine, 51 (360) 305-310 doi:10.1180/minmag.1987.051.360.13
 
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