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


06293010017272090294111.jpg
Alunite

Frassine, Monterotondo Marittimo, Grosseto Province, Tuscany, Italy
06293010017272090294111.jpg
Alunite

Frassine, Monterotondo Marittimo, Grosseto Province, Tuscany, Italy
06293010017272090294111.jpg
Alunite

Frassine, Monterotondo Marittimo, Grosseto Province, Tuscany, Italy
Locality type:Deposit
Classification
Species:Alunite
Formula:KAl3(SO4)2(OH)6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Alunite data
Locality Data:Click here to view Frassine, Monterotondo Marittimo, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:314505
Long-form Identifier:1:3:314505:0
GUID (UUID V4):0
Nearest other occurrences of Alunite
11.4km (7.1 miles) ⓘMontioni, Suvereto, Livorno Province, Tuscany, Italy
17.4km (10.8 miles) ⓘAccesa mine, Massa Marittima, Grosseto Province, Tuscany, Italy
24.3km (15.1 miles) ⓘGavorrano Mine, Gavorrano, Grosseto Province, Tuscany, Italy
35.1km (21.8 miles) ⓘLe Cetine di Cotorniano mine, Chiusdino, Siena Province, Tuscany, Italy
42.9km (26.6 miles) ⓘPoggio Peloso, Civitella Paganico, Grosseto Province, Tuscany, Italy
47.3km (29.4 miles) ⓘTerranera Mine, Porto Azzurro, Livorno Province, Tuscany, Italy
75.7km (47.0 miles) ⓘMontecchio Cave, Semproniano, Grosseto Province, Tuscany, Italy
References
Dr. GIOVANNI MONTINI, "Mineralizzazioni epitermali a oro nell'area di Frassine (GR)", Unpublished Paper, Firenze University.
 
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