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
Campomorto Quarry, Pietra Massa Locality, Montalto di Castro, Viterbo Province, Lazio, 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 Campomorto Quarry, Pietra Massa Locality, Montalto di Castro, Viterbo Province, Lazio, Italy
Data Identifiers
Mindat Occurrence Record ID:243248
Long-form Identifier:1:3:243248:9
GUID (UUID V4):0
Nearest other occurrences of Gypsum
9.9km (6.1 miles) ⓘMontauto mine, Manciano, Grosseto Province, Tuscany, Italy
13.6km (8.4 miles) ⓘTafone mine (Valle del Tafone mining area), Manciano, Grosseto Province, Tuscany, Italy
16.4km (10.2 miles) ⓘPonte San Pietro mineralisation, Ischia di Castro, Viterbo Province, Lazio, Italy
18.0km (11.2 miles) ⓘPozza del Lino quarry, Borgo Carige, Capalbio, Grosseto Province, Tuscany, Italy
29.9km (18.6 miles) ⓘCase Collina, Pitigliano, Grosseto Province, Tuscany, Italy
32.3km (20.1 miles) ⓘPoggio Pinzo (Gradoli pozzolana quarry), Gradoli, Viterbo Province, Lazio, Italy
32.5km (20.2 miles) ⓘMontenero Quarry, Onano, Viterbo Province, Lazio, Italy
33.1km (20.5 miles) ⓘSan Martino sul Fiora mine, San Martino sul Fiora, Manciano, Grosseto Province, Tuscany, Italy
34.1km (21.2 miles) ⓘSaturnia, Manciano, Grosseto Province, Tuscany, Italy
34.9km (21.7 miles) ⓘFosso "La Fuliggine", Catabbio, Semproniano, Grosseto Province, Tuscany, Italy
References
Passaglia, E. & Turconi, B. (1982): Silicati ed altri minerali di Montalto di Castro - VT. Rivista Mineralogica Italiana, 4/1982, 97-110.
 
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