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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Gypsum from
Cortevecchia Mine, Semproniano, Grosseto Province, Tuscany, Italy


Locality type:Mine
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Cortevecchia Mine, Semproniano, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:940595
Long-form Identifier:1:3:940595:0
GUID (UUID V4):0
Nearest other occurrences of Gypsum
5.6km (3.5 miles) ⓘFosso "La Fuliggine", Catabbio, Semproniano, Grosseto Province, Tuscany, Italy
7.1km (4.4 miles) ⓘMontecchio Cave, Semproniano, Grosseto Province, Tuscany, Italy
7.4km (4.6 miles) ⓘSan Martino sul Fiora mine, San Martino sul Fiora, Manciano, Grosseto Province, Tuscany, Italy
8.5km (5.3 miles) ⓘLe Solforate Mine (Solforate Rosselli Mine), Piancastagnaio, Siena Province, Tuscany, Italy
8.7km (5.4 miles) ⓘSiele-Carpine mine (Siele mine; Carpine mine), Piancastagnaio, Siena Province, Tuscany, Italy
8.8km (5.4 miles) ⓘSaturnia, Manciano, Grosseto Province, Tuscany, Italy
8.8km (5.5 miles) ⓘAbetina-Argus Mine, Piancastagnaio, Siena Province, Tuscany, Italy
12.4km (7.7 miles) ⓘBagnore Mine (Le Bagnore Mine), Santa Fiora, Grosseto Province, Tuscany, Italy
16.2km (10.0 miles) ⓘCase Collina, Pitigliano, Grosseto Province, Tuscany, Italy
21.1km (13.1 miles) ⓘPereta Mine, Scansano, Grosseto Province, Tuscany, Italy
References
Lotti, B. (1902) Condizioni geologiche e genesi del giacimento cinabrifero di Cortevecchia nel Monte Amiata. Rassegna Mineraria, Metallurgica e Chimica, 17, 165-168
Lotti, B. (1903) Geologische Verhältnisse und Genesis der Zinnoberlagerstätte von Cortevecchia am Monte Amiata. Zeitschrift für praktische Geologie, 11, 423-427
 
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