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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Quartz from
Frassine, Monterotondo Marittimo, Grosseto Province, Tuscany, Italy


Locality type:Deposit
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Frassine, Monterotondo Marittimo, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:314504
Long-form Identifier:1:3:314504:3
GUID (UUID V4):0
Nearest other occurrences of Quartz
9.4km (5.8 miles) ⓘCanneto Mount, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
11.4km (7.1 miles) ⓘMontioni, Suvereto, Livorno Province, Tuscany, Italy
11.5km (7.1 miles) ⓘCascata slag locality, Valpiana - Castello della Marsiliana area slag sites, Massa Marittima, Grosseto Province, Tuscany, Italy
11.7km (7.3 miles) ⓘMonte Calvi-North, San Vincenzo, Livorno Province, Tuscany, Italy
12.9km (8.0 miles) ⓘPoggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
12.9km (8.0 miles) ⓘLanzi Mine (Cava del Piombo; Buca del Piombo), Campiglia Marittima, Livorno Province, Tuscany, Italy
12.9km (8.0 miles) ⓘTemperino Mine, Campiglia Marittima, Livorno Province, Tuscany, Italy
13.5km (8.4 miles) ⓘMadonna di Fucinaia (Madonna della Fucinaia) slag heaps, Campiglia Marittima, Livorno Province, Tuscany, Italy
13.7km (8.5 miles) ⓘArialla slag locality, Valpiana - Castello della Marsiliana area slag sites, Massa Marittima, Grosseto Province, Tuscany, Italy
14.1km (8.7 miles) ⓘMonterufoli, Pomarance, Pisa Province, Tuscany, Italy
References
Dr. GIOVANNI MONTINI, "Mineralizzazioni epitermali a oro nell'area di Frassine (GR)", Unpublished Paper, Firenze University.
 
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