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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Xanthoconite from
Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy


06200900017787907594354.jpg
Xanthoconite

Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
06200900017787907594354.jpg
Xanthoconite

Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
03877840017787907607311.jpg
Xanthoconite

Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
Locality type:Mine
Classification
Species:Xanthoconite
Formula:Ag3AsS3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Xanthoconite data
Locality Data:Click here to view Pollone Mine, Valdicastello Carducci, Pietrasanta, Lucca Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:784457
Long-form Identifier:1:3:784457:7
GUID (UUID V4):0
References
Biagioni, C., Orlandi, P., Moëlo, Y., Pardini, S., Passarino, G. (2012) Sterryite e parasterryite. I solfosali aciculari di piombo e argento della miniera del Pollone (Pietrasanta, Lucca). Rivista Mineralogica Italiana, 2012 (2) 76-91
Biagioni, Cristian; Sejkora, Jiří; Moëlo, Yves; Makovicky, Emil; Musetti, Silvia; Pasero, Marco; Dolníček, Zdeněk (2026) Kenoargentotennantite-(Fe), Ag6(Cu4Fe2)As4S12□, a new “keno” member of the tetrahedrite group. Mineralogical Magazine, 1-27 doi:10.1180/mgm.2026.10214
 
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