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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Valentinite from
San Martino sul Fiora mine, San Martino sul Fiora, Manciano, Grosseto Province, Tuscany, Italy


Locality type:Mine
Classification
Species:Valentinite
Formula:Sb2O3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Valentinite data
Locality Data:Click here to view San Martino sul Fiora mine, San Martino sul Fiora, Manciano, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:431007
Long-form Identifier:1:3:431007:5
GUID (UUID V4):0
Nearest other occurrences of Valentinite
3.5km (2.2 miles) ⓘFosso "La Fuliggine", Catabbio, Semproniano, Grosseto Province, Tuscany, Italy
18.4km (11.4 miles) ⓘMacchia Casella mine (Poggio Fuoco mine), Manciano, Grosseto Province, Tuscany, Italy
21.1km (13.1 miles) ⓘPereta Mine, Scansano, Grosseto Province, Tuscany, Italy
22.3km (13.8 miles) ⓘTafone mine (Valle del Tafone mining area), Manciano, Grosseto Province, Tuscany, Italy
24.0km (14.9 miles) ⓘMontauto mine, Manciano, Grosseto Province, Tuscany, Italy
42.1km (26.2 miles) ⓘPoggio Peloso, Civitella Paganico, Grosseto Province, Tuscany, Italy
51.1km (31.7 miles) ⓘLa Selva Mine, Casale di Pari, Civitella Paganico, Grosseto Province, Tuscany, Italy
71.6km (44.5 miles) ⓘLe Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
72.7km (45.2 miles) ⓘPodere Montevecchio (Podere Montevecchio Mine; Miniera della Sambuca), Gerfalco, Montieri, Grosseto Province, Tuscany, Italy
95.7km (59.4 miles) ⓘMicciano, Pomarance, Pisa Province, Tuscany, Italy
References
Meli, R. (2000): L'antica miniera antimonifera di S. Martino sul Fiora, Mancianese (Grosseto). Rivista Mineralogica Italiana, 2/2000, 111-113.
 
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