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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Mica Group from
Oncino lava flow (Uncino lava flow), Torre Annunziata, Metropolitan City of Naples, Campania, Italy


Locality type:Lava Flow
Classification
Species:'Mica Group' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Mica Group data
Locality Data:Click here to view Oncino lava flow (Uncino lava flow), Torre Annunziata, Metropolitan City of Naples, Campania, Italy
Data Identifiers
Mindat Occurrence Record ID:1374209
Long-form Identifier:1:3:1374209:0
GUID (UUID V4):0
Nearest other occurrences of Mica Group
1.2km (0.7 miles) ⓘVilla Inglese quarries, Torre del Greco, Metropolitan City of Naples, Campania, Italy
2.1km (1.3 miles) ⓘCamaldoli della Torre, Torre del Greco, Metropolitan City of Naples, Campania, Italy
7.7km (4.8 miles) ⓘSan Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
7.9km (4.9 miles) ⓘLe Novelle Quarry, Ercolano, Metropolitan City of Naples, Campania, Italy
9.6km (6.0 miles) ⓘLagno Amendolare, Sant'Anastasia, Metropolitan City of Naples, Campania, Italy
34.1km (21.2 miles) ⓘPozzo Vecchio, Procida Island, Metropolitan City of Naples, Campania, Italy
References
Scacchi, A. (1882) Della lava vesuviana dell'anno 1631. Memorie Matematiche e Fisiche della Società Italiana di Scienze (detta dei XL), 4, 8, 34+XI pages
 
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