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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Melanterite from
Accesa mine, Massa Marittima, Grosseto Province, Tuscany, Italy


Locality type:Mine
Classification
Species:Melanterite
Formula:Fe2+(H2O)6(SO4) · H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Melanterite data
Locality Data:Click here to view Accesa mine, Massa Marittima, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:949264
Long-form Identifier:1:3:949264:6
GUID (UUID V4):0
Nearest other occurrences of Melanterite
1.7km (1.0 miles) ⓘFenice Capanne Mine, Massa Marittima, Grosseto Province, Tuscany, Italy
7.6km (4.7 miles) ⓘMarsiliana slag locality, Valpiana - Castello della Marsiliana area slag sites, Massa Marittima, Grosseto Province, Tuscany, Italy
8.5km (5.3 miles) ⓘGavorrano Mine, Gavorrano, Grosseto Province, Tuscany, Italy
10.1km (6.3 miles) ⓘNiccioleta Mine, Massa Marittima, Grosseto Province, Tuscany, Italy
12.1km (7.5 miles) ⓘMontioni, Suvereto, Livorno Province, Tuscany, Italy
15.4km (9.6 miles) ⓘBoccheggiano mines, Montieri, Grosseto Province, Tuscany, Italy
16.0km (9.9 miles) ⓘCampiano Mine, Montieri, Grosseto Province, Tuscany, Italy
25.9km (16.1 miles) ⓘLanzi Mine (Cava del Piombo; Buca del Piombo), Campiglia Marittima, Livorno Province, Tuscany, Italy
32.5km (20.2 miles) ⓘBotro del Confine (La Sassa vein system), La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
32.5km (20.2 miles) ⓘCamporedaldi Mine (La Minierina), Chiusdino, Siena Province, Tuscany, Italy
References
Dill, H. (1979) Lagerstättenkundliche Untersuchungen zur Entstehung der Pyrit-führenden Blei-Kupfer-Zink-Lagerstätte Accesa (SW-Toskana). Mineralium Deposita, 14 (1). 57-80 doi:10.1007/bf00201867
 
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