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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Marcasite from
Pietrineri mine, Bagni San Filippo, Castiglione d'Orcia, Siena Province, Tuscany, Italy


Locality type:Mine
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Pietrineri mine, Bagni San Filippo, Castiglione d'Orcia, Siena Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:252131
Long-form Identifier:1:3:252131:2
GUID (UUID V4):0
Nearest other occurrences of Marcasite
4.7km (2.9 miles) ⓘAbbadia San Salvatore Mine, Abbadia San Salvatore, Siena Province, Tuscany, Italy
12.9km (8.0 miles) ⓘBagnore Mine (Le Bagnore Mine), Santa Fiora, Grosseto Province, Tuscany, Italy
13.7km (8.5 miles) ⓘAbetina-Argus Mine, Piancastagnaio, Siena Province, Tuscany, Italy
14.2km (8.8 miles) ⓘLe Solforate Mine (Solforate Rosselli Mine), Piancastagnaio, Siena Province, Tuscany, Italy
14.9km (9.3 miles) ⓘSiele-Carpine mine (Siele mine; Carpine mine), Piancastagnaio, Siena Province, Tuscany, Italy
16.8km (10.4 miles) ⓘMonte Labbro II Mine, Santa Fiora, Grosseto Province, Tuscany, Italy
16.9km (10.5 miles) ⓘBanditella Mine, Arcidosso, Grosseto Province, Tuscany, Italy
17.3km (10.8 miles) ⓘMonte Labbro I Mine, Roccalbegna, Grosseto Province, Tuscany, Italy
25.6km (15.9 miles) ⓘCatabbio mine, Catabbio, Semproniano, Grosseto Province, Tuscany, Italy
27.5km (17.1 miles) ⓘFosso "La Fuliggine", Catabbio, Semproniano, Grosseto Province, Tuscany, Italy
References
Meli R., 2002. Giacimenti da non dimenticare: Pietrineri (Val d'Orcia, Siena). Riv. Miner. Ital. 2: 70-73.
 
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