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
Podere Montisi quarry, Fontazzi, Murlo, Siena Province, Tuscany, Italy


05593000017369845867908.jpg
Gypsum

Podere Montisi quarry, Fontazzi, Murlo, Siena Province, Tuscany, Italy
05593000017369845867908.jpg
Gypsum

Podere Montisi quarry, Fontazzi, Murlo, Siena Province, Tuscany, Italy
03432310017272080581358.jpg
Gypsum

Podere Montisi quarry, Fontazzi, Murlo, Siena Province, Tuscany, Italy
Locality type:Quarry
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 Podere Montisi quarry, Fontazzi, Murlo, Siena Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:252148
Long-form Identifier:1:3:252148:0
GUID (UUID V4):0
Nearest other occurrences of Gypsum
9.6km (6.0 miles) ⓘCamporedaldi Mine (La Minierina), Chiusdino, Siena Province, Tuscany, Italy
10.0km (6.2 miles) ⓘBagni di Petriolo (Terme di Petriolo), Monticiano, Siena Province, Tuscany, Italy
10.8km (6.7 miles) ⓘLa Selva Mine, Casale di Pari, Civitella Paganico, Grosseto Province, Tuscany, Italy
12.3km (7.7 miles) ⓘLe Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
15.8km (9.8 miles) ⓘClay quarry, Chiusdino, Siena Province, Tuscany, Italy
21.7km (13.5 miles) ⓘGypsum quarries, Roccastrada, Grosseto Province, Tuscany, Italy
22.0km (13.6 miles) ⓘBoccheggiano mines, Montieri, Grosseto Province, Tuscany, Italy
24.5km (15.2 miles) ⓘPoggio Orlando mine, Lornano, Monteriggioni, Siena Province, Tuscany, Italy
24.5km (15.2 miles) ⓘLornano Mine, Lornano, Monteriggioni, Siena Province, Tuscany, Italy
24.8km (15.4 miles) ⓘPodere Montevecchio (Podere Montevecchio Mine; Miniera della Sambuca), Gerfalco, Montieri, Grosseto Province, Tuscany, Italy
References
Meli R., 2002. Gesso ed altri minerali dalla cava di Podere Montisi (Fontazzi-Siena). Riv. Miner. Ital., 2: 101-102.
 
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