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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Cordierite from
Arenella (Cava del Piccione), Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy


Classification
Species:Cordierite
Formula:Mg2Al4Si5O18
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Arenella (Cava del Piccione), Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:253993
Long-form Identifier:1:3:253993:5
GUID (UUID V4):0
Nearest other occurrences of Cordierite
0.6km (0.4 miles) ⓘLazzaretto, Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy
0.8km (0.5 miles) ⓘGabbianara, Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy
60.4km (37.5 miles) ⓘTerranera Mine, Porto Azzurro, Livorno Province, Tuscany, Italy
60.7km (37.7 miles) ⓘCampomorto Quarry, Pietra Massa Locality, Montalto di Castro, Viterbo Province, Lazio, Italy
61.8km (38.4 miles) ⓘOrtano coast, Rio Marina, Rio, Livorno Province, Tuscany, Italy
74.1km (46.1 miles) ⓘRhyolite dome, Roccatederighi, Roccastrada, Grosseto Province, Tuscany, Italy
76.0km (47.2 miles) ⓘMonte di Cellere, Cellere, Viterbo Province, Lazio, Italy
79.7km (49.5 miles) ⓘSpizzicatore Hill, Allumiere, Metropolitan City of Rome Capital, Lazio, Italy
80.2km (49.8 miles) ⓘMonte Sassetto, Allumiere, Metropolitan City of Rome Capital, Lazio, Italy
References
Marinai, Nannoni, 1994. I minerali dell'Isola del Giglio. Circolo Culturale Gigliese.
 
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