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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Valentinite from
Ribeiro da Igreja Mine, Alfena, Valongo, Porto, Portugal


Locality type:Mine
Classification
Species:Valentinite
Formula:Sb2O3
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
SEM-EDS
Associated Minerals Based on Photo Data:
Kermesite1
Quartz1
Data
Mineral Data:Click here to view Valentinite data
Locality Data:Click here to view Ribeiro da Igreja Mine, Alfena, Valongo, Porto, Portugal
Data Identifiers
Mindat Occurrence Record ID:489555
Long-form Identifier:1:3:489555:8
GUID (UUID V4):0
Nearest other occurrences of Valentinite
13.7km (8.5 miles) ⓘRibeiro da Serra Mine, Medas, Gondomar, Porto, Portugal
14.3km (8.9 miles) ⓘAlto do Sobrido Mine, Melres, Gondomar, Porto, Portugal
References
Alves, Pedro (n.d.) Personal communication.
 
and/or  
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