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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Manganite from
Poggio al Quattrino, Pomarance, Pisa Province, Tuscany, Italy


Locality type:Mountain
Classification
Species:Manganite
Formula:Mn3+O(OH)
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Manganite data
Locality Data:Click here to view Poggio al Quattrino, Pomarance, Pisa Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:494642
Long-form Identifier:1:3:494642:7
GUID (UUID V4):0
Nearest other occurrences of Manganite
25.5km (15.8 miles) ⓘTemperino Mine, Campiglia Marittima, Livorno Province, Tuscany, Italy
37.9km (23.6 miles) ⓘBaratti slag locality, Piombino, Livorno Province, Tuscany, Italy
38.8km (24.1 miles) ⓘValle Benedetta, Livorno, Livorno Province, Tuscany, Italy
54.7km (34.0 miles) ⓘFosso della Chiesa Mine, Pompana, Murlo, Siena Province, Tuscany, Italy
60.2km (37.4 miles) ⓘOrtano Mine, Rio Marina, Rio, Livorno Province, Tuscany, Italy
63.5km (39.5 miles) ⓘCape Bianco Mine, Porto Azzurro, Livorno Province, Tuscany, Italy
72.6km (45.1 miles) ⓘLa Selva farm, Rapolano Terme, Siena Province, Tuscany, Italy
73.5km (45.7 miles) ⓘSan Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy
References
Orlandi P., (2005). Geositi minerari e mineralogici della provincia di Pisa. In: La geologia della provincia di Pisa. Cartografia, geositi e banche dati, Provincia di Pisa, Italy, pp. 55-280.
 
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