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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Calcite from
Fornaci di Montignoso Quarry (Bi.Bru Quarry), Montaione, Metropolitan City of Florence, Tuscany, Italy


Locality type:Quarry
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Fornaci di Montignoso Quarry (Bi.Bru Quarry), Montaione, Metropolitan City of Florence, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:1237016
Long-form Identifier:1:3:1237016:0
GUID (UUID V4):0
Nearest other occurrences of Calcite
1.0km (0.6 miles) ⓘLa Striscia, Il Castagno, Gambassi Terme, Metropolitan City of Florence, Tuscany, Italy
2.6km (1.6 miles) ⓘIano (Jano), Montaione, Metropolitan City of Florence, Tuscany, Italy
3.3km (2.1 miles) ⓘGambassi Quarry (Borgo alla Collina), Gambassi Terme, Metropolitan City of Florence, Tuscany, Italy
4.8km (3.0 miles) ⓘCastagno prospects (Migliarino and Forra prospects), Il Castagno, Gambassi Terme, Metropolitan City of Florence, Tuscany, Italy
5.8km (3.6 miles) ⓘCetine di Camporbiano Mine (Le Cetine; Cetine di Volterra; Cetine di Gambassi), Podere Giuseppe, Gambassi Terme, Metropolitan City of Florence, Tuscany, Italy
7.4km (4.6 miles) ⓘPoggio del Cornocchio quarries, Volterra, Pisa Province, Tuscany, Italy
16.1km (10.0 miles) ⓘI Borboi, Lajatico, Pisa Province, Tuscany, Italy
17.7km (11.0 miles) ⓘMontecatini Mine, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
19.1km (11.9 miles) ⓘPodere La Veduta (Buriano), Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
20.5km (12.8 miles) ⓘI Gulfi (Termine), Chianni, Pisa Province, Tuscany, Italy
References
Betti, C., Bazzoni, C., Bernocchi, M., Pagani, G., Ciriotti, M.E., Bittarello, E., Batoni, M., Batacchi, C. (2017) Poggio del Cornocchio e dintorni (Firenze - Pisa - Siena): storia, miniere e minerali di una zona poco conosciuta [Poggio del Cornocchio and surroundings (Florence - Pisa - Siena): history, mines and minerals of a little-known area]. Micro, 15 (1). 2-43
 
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