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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Gneiss from
Billiken and Black Knight Lodes Occurrence, Critchell area, Jefferson County, Colorado, USA


Locality type:Occurrence
Classification
Type:Gneiss
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gneiss data
Locality Data:Click here to view Billiken and Black Knight Lodes Occurrence, Critchell area, Jefferson County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1348376
Long-form Identifier:1:3:1348376:2
GUID (UUID V4):0
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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