Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Trona from
Solfatara di Pozzuoli, Pozzuoli, Metropolitan City of Naples, Campania, Italy


Classification
Species:Trona
Formula:Na3H(CO3)2 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Trona data
Locality Data:Click here to view Solfatara di Pozzuoli, Pozzuoli, Metropolitan City of Naples, Campania, Italy
Data Identifiers
Mindat Occurrence Record ID:274751
Long-form Identifier:1:3:274751:4
GUID (UUID V4):0
References
Sinno R. – (1957) Trona, thenardite e mirabilite nei Campi Flegrei. Periodico di Mineralogia – Roma pp. 1-12.
 
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