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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Arsenopyrite from
Sassi Neri mine, Capoliveri, Livorno Province, Tuscany, Italy


Locality type:Mine
Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Sassi Neri mine, Capoliveri, Livorno Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:1677907
Long-form Identifier:1:3:1677907:7
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
2.2km (1.4 miles) ⓘGinevro Mine, Capoliveri, Livorno Province, Tuscany, Italy
2.9km (1.8 miles) ⓘCape Calamita Mine, Capoliveri, Livorno Province, Tuscany, Italy
4.1km (2.6 miles) ⓘTerranera Mine, Porto Azzurro, Livorno Province, Tuscany, Italy
4.6km (2.9 miles) ⓘCape Arco Mine, Rio Marina, Rio, Livorno Province, Tuscany, Italy
6.4km (4.0 miles) ⓘOrtano Mine, Rio Marina, Rio, Livorno Province, Tuscany, Italy
6.8km (4.2 miles) ⓘTignitoio Mine, Rio Marina, Rio, Livorno Province, Tuscany, Italy
8.5km (5.3 miles) ⓘTorre di Rio - Santa Filomena area (Monte della Torre), Rio Marina, Rio, Livorno Province, Tuscany, Italy
9.4km (5.8 miles) ⓘRio Mine, Rio Marina, Rio, Livorno Province, Tuscany, Italy
17.3km (10.8 miles) ⓘGrotta d'Oggi, San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy
17.5km (10.9 miles) ⓘRosina vein (Rosina pegmatite), San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy
References
Garofalo, Paolo S., Redi, Daniele, Malafeevskiy, Nikita, Schwarz, Gunnar, Neff, Christoph, Schmidt, Peter Keresztes, Günther, Detlef (2025) Failed genesis of a Fe-skarn deposit caused by redox states of intrusion and wall rocks (Torre di Rio, Island of Elba, Italy). Ore Geology Reviews, 177. 106446 doi:10.1016/j.oregeorev.2025.106446
 
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