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
Spizzicatore Hill, Allumiere, Metropolitan City of Rome Capital, Lazio, Italy


Locality type:Hill
Classification
Species:Cordierite
Formula:Mg2Al4Si5O18
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Spizzicatore Hill, Allumiere, Metropolitan City of Rome Capital, Lazio, Italy
Data Identifiers
Mindat Occurrence Record ID:540220
Long-form Identifier:1:3:540220:5
GUID (UUID V4):0
Nearest other occurrences of Cordierite
1.6km (1.0 miles) ⓘMonte Sassetto, Allumiere, Metropolitan City of Rome Capital, Lazio, Italy
28.3km (17.6 miles) ⓘCampomorto Quarry, Pietra Massa Locality, Montalto di Castro, Viterbo Province, Lazio, Italy
40.5km (25.1 miles) ⓘMonte di Cellere, Cellere, Viterbo Province, Lazio, Italy
78.9km (49.1 miles) ⓘGabbianara, Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy
79.2km (49.2 miles) ⓘLazzaretto, Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy
79.7km (49.5 miles) ⓘArenella (Cava del Piccione), Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy
94.0km (58.4 miles) ⓘColle Fabbri, Spoleto, Perugia Province, Umbria, Italy
References
Della Ventura, G., Bellatreccia, F., Cámara, F., Oberti, R., Lorand, J.P., Parodi, G.C., Carlier, G., Di Domenico, D. (2006): Carbon-bearing cordierite from Allumiere (Tolfa volcanic center, Latium, Italy): occurrence, crystal-structure and FTIR microspectroscopy. Periodico di Mineralogia, 75, 113–126. [http://www.dst.uniroma1.it/riviste/permin/testi/V75/14.pdf]
 
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