Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Illite from
Calabona Mine, Calabona area, Alghero, Sassari Province, Sardinia, Italy


Locality type:Mine
Classification
Species:Muscovite var: Illite
Formula:K0.65Al2.0[Al0.65Si3.35O10](OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Illite data
Locality Data:Click here to view Calabona Mine, Calabona area, Alghero, Sassari Province, Sardinia, Italy
Data Identifiers
Mindat Occurrence Record ID:620925
Long-form Identifier:1:3:620925:4
GUID (UUID V4):0
Nearest other occurrences of Illite
27.1km (16.8 miles) ⓘArgentiera Mine (Argentiera della Nurra Mine), Sassari, Sassari Province, Sardinia, Italy
99.9km (62.1 miles) ⓘLaconi kaolin mines, Laconi, Oristano Province, Sardinia, Italy
References
Singer, D.A., Berger, V.I., Moring, B.C. (2008) Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. Open-File Report 2008-1155
 
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