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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Biotite from
Forno, Portoferraio, Livorno Province, Tuscany, Italy


07108430017272026028814.jpg
Biotite

Forno, Portoferraio, Livorno Province, Tuscany, Italy
00556800017272053901047.jpg
Biotite

Forno, Portoferraio, Livorno Province, Tuscany, Italy
07108430017272026028814.jpg
Biotite

Forno, Portoferraio, Livorno Province, Tuscany, Italy
00556800017272053901047.jpg
Biotite

Forno, Portoferraio, Livorno Province, Tuscany, Italy
07108430017272026028814.jpg
Biotite

Forno, Portoferraio, Livorno Province, Tuscany, Italy
06544060017272026063397.jpg
Biotite

Forno, Portoferraio, Livorno Province, Tuscany, Italy
Locality type:Beach
Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Forno, Portoferraio, Livorno Province, Tuscany, Italy
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:767502
Long-form Identifier:1:3:767502:7
GUID (UUID V4):0
Nearest other occurrences of Biotite
7.3km (4.5 miles) ⓘGrotta d'Oggi, San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy
7.8km (4.8 miles) ⓘSan Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy
7.9km (4.9 miles) ⓘRosina vein (Rosina pegmatite), San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy
8.2km (5.1 miles) ⓘFonte del Prete, San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy
12.9km (8.0 miles) ⓘTerranera Mine, Porto Azzurro, Livorno Province, Tuscany, Italy
13.2km (8.2 miles) ⓘTorre di Rio - Santa Filomena area (Monte della Torre), Rio Marina, Rio, Livorno Province, Tuscany, Italy
53.4km (33.2 miles) ⓘGavorrano Mine, Gavorrano, Grosseto Province, Tuscany, Italy
70.2km (43.6 miles) ⓘRhyolite dome, Roccatederighi, Roccastrada, Grosseto Province, Tuscany, Italy
70.9km (44.1 miles) ⓘMonte Pelato, Castelnuovo della Misericordia, Rosignano Marittimo, Livorno Province, Tuscany, Italy
71.8km (44.6 miles) ⓘArenella (Cava del Piccione), Giglio Island, Isola del Giglio, Grosseto Province, Tuscany, Italy
References
Orlandi P. & Pezzotta, F. (1996): Minerali dell'isola d'Elba. I minerali dei Giacimenti Metalliferi dell'Elba Orientale e delle Pegmatiti del Monte Capanne. Edizioni Novecento Grafico, Bergamo, Italy, 245 pp.p.231
 
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