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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Pyrolusite from
Montorsi iron ore prospects (Monte Spinosa-North; Monte Spinosa iron deposit), Campiglia Marittima, Livorno Province, Tuscany, Italy


Locality type:Prospect
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Montorsi iron ore prospects (Monte Spinosa-North; Monte Spinosa iron deposit), Campiglia Marittima, Livorno Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:950437
Long-form Identifier:1:3:950437:0
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
2.5km (1.5 miles) ⓘMonte Valerio, Campiglia Marittima, Livorno Province, Tuscany, Italy
27.6km (17.2 miles) ⓘCape Pero, Cavo, Rio Marina, Rio, Livorno Province, Tuscany, Italy
28.2km (17.5 miles) ⓘFornacelle and Rio Albano Mines, Cavo, Rio Marina, Rio, Livorno Province, Tuscany, Italy
31.0km (19.2 miles) ⓘRio Mine, Rio Marina, Rio, Livorno Province, Tuscany, Italy
36.8km (22.9 miles) ⓘCape Bianco Mine, Porto Azzurro, Livorno Province, Tuscany, Italy
53.6km (33.3 miles) ⓘVia della Sambuca U-V occurrence, Valle Benedetta, Livorno, Livorno Province, Tuscany, Italy
53.6km (33.3 miles) ⓘPoggio Peloso, Civitella Paganico, Grosseto Province, Tuscany, Italy
57.1km (35.5 miles) ⓘBagni di Petriolo (Terme di Petriolo), Monticiano, Siena Province, Tuscany, Italy
64.1km (39.9 miles) ⓘI Poggi, La Befa, Murlo, Siena Province, Tuscany, Italy
65.4km (40.6 miles) ⓘFosso della Chiesa Mine, Pompana, Murlo, Siena Province, Tuscany, Italy
References
Nannoni R., Pistolesi M., Rossi R. (2012): Miniere e minerali di Campiglia Marittima. La Bancarella Editrice, Piombino (Livorno), 162 pp.
 
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