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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Muscovite from
Montecchio Cave, Semproniano, Grosseto Province, Tuscany, Italy


Locality type:Cave
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Montecchio Cave, Semproniano, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:1013063
Long-form Identifier:1:3:1013063:8
GUID (UUID V4):0
Nearest other occurrences of Muscovite
43.6km (27.1 miles) ⓘForte Stella, Monte Argentario, Grosseto Province, Tuscany, Italy
45.1km (28.0 miles) ⓘBagni di Petriolo (Terme di Petriolo), Monticiano, Siena Province, Tuscany, Italy
45.2km (28.1 miles) ⓘCala Grande, Monte Argentario, Grosseto Province, Tuscany, Italy
46.5km (28.9 miles) ⓘCala Moresca, Monte Argentario, Grosseto Province, Tuscany, Italy
54.8km (34.1 miles) ⓘGavorrano Mine, Gavorrano, Grosseto Province, Tuscany, Italy
57.2km (35.6 miles) ⓘBoccheggiano mines, Montieri, Grosseto Province, Tuscany, Italy
58.8km (36.5 miles) ⓘAccesa mine, Massa Marittima, Grosseto Province, Tuscany, Italy
61.6km (38.3 miles) ⓘPunta del Morto, Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy
62.9km (39.1 miles) ⓘTre Croci, Vetralla, Viterbo Province, Lazio, Italy
64.5km (40.1 miles) ⓘCotorniano quarry, Chiusdino, Siena Province, Tuscany, Italy
References
De Waele, J., Galli, E., Piccini, L., and Rossi, A. (2013) Descrizione morfologica e mineralogica della grotta ipogenica sulfurea di Montecchio (Grosseto, Toscana). In: Cucchi, F., and Gudi, P. (eds.), Atti del XXI Congresso Nazionale di Speleologia “Diffusione delle conoscenze”, Sessione Attività di esplorazione e ricerca. Trieste 2-5 giugno 2011. Edizioni Università di Trieste, Trieste, 380-386.
 
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