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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Chalcophanite from
Poggio al Montone, Montoccoli-Castellaccia area (Fosso Zanca-Filone di Montoccoli area; Zanca Valley mines), Massa Marittima, Grosseto Province, Tuscany, Italy


Classification
Species:Chalcophanite
Formula:ZnMn34+O7 · 3H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcophanite data
Locality Data:Click here to view Poggio al Montone, Montoccoli-Castellaccia area (Fosso Zanca-Filone di Montoccoli area; Zanca Valley mines), Massa Marittima, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:954377
Long-form Identifier:1:3:954377:5
GUID (UUID V4):0
Nearest other occurrences of Chalcophanite
4.9km (3.0 miles) ⓘSerrabottini, Massa Marittima, Grosseto Province, Tuscany, Italy
26.2km (16.3 miles) ⓘLanzi Mine (Cava del Piombo; Buca del Piombo), Campiglia Marittima, Livorno Province, Tuscany, Italy
37.7km (23.5 miles) ⓘI Poggi, La Befa, Murlo, Siena Province, Tuscany, Italy
73.9km (45.9 miles) ⓘPoggio Mortaio (Poggio Mortaio Mine; Monte Argentario Mine; Poggio delle Polveriere; Terra Rossa; Il Passo), Monte Argentario, Grosseto Province, Tuscany, Italy
References
Bazzoni C., Mangoni G., Capperi M., Bernocchi M. (2011): Montoccoli-Castellaccia: I minerali delle miniere nella valle del torrente Zanca (Grosseto). Riv. Mineral. Ital., 35, 2 (2-2011), 76-89.
 
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