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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Illite from
Geiger clay pit, Geiger grade, Washoe County, Nevada, USA


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 Geiger clay pit, Geiger grade, Washoe County, Nevada, USA
Data Identifiers
Mindat Occurrence Record ID:286231
Long-form Identifier:1:3:286231:6
GUID (UUID V4):0
Nearest other occurrences of Illite
12.8km (8.0 miles) ⓘFlowery Lode, Comstock Mining District, Storey County, Nevada, USA
20.1km (12.5 miles) ⓘDesert King shaft, Wedekind Mining District, Washoe County, Nevada, USA
20.2km (12.6 miles) ⓘWedekind shaft, Wedekind Mining District, Washoe County, Nevada, USA
20.3km (12.6 miles) ⓘArkell shaft, Wedekind Mining District, Washoe County, Nevada, USA
37.9km (23.6 miles) ⓘTalapoosa mine, Talapoosa Mining District, Lyon County, Nevada, USA
50.3km (31.3 miles) ⓘAlunite Hill, Buckskin Mining District, Lyon County, Nevada, USA
53.5km (33.2 miles) ⓘBuckskin Mine, Buckskin Mining District (Smith Valley Mining District), Buckskin Range, Douglas County, Nevada, USA
60.6km (37.6 miles) ⓘAnn-Mason deposit (Ludwig; Douglas Hill; Cast; Blue Hills; McConnell; Minnesota; Shamrock), Yerington Mining District, Singatse Range, Lyon County, Nevada, USA
References
Castor, Stephen B.; Ferdock, Gregory C. (2004) Minerals of Nevada. Special Publication 31. Nevada Bureau of Mines and Geology 512pp.
 
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