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
Gelbe Birke Mine, Beierfeld, Grünhain-Beierfeld, Erzgebirgskreis, Saxony, Germany


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 Gelbe Birke Mine, Beierfeld, Grünhain-Beierfeld, Erzgebirgskreis, Saxony, Germany
Data Identifiers
Mindat Occurrence Record ID:77870
Long-form Identifier:1:3:77870:3
GUID (UUID V4):0
Nearest other occurrences of Illite
6.6km (4.1 miles) ⓘPöhla-Tellerhäuser Mine, Pöhla, Schwarzenberg, Erzgebirgskreis, Saxony, Germany
14.1km (8.7 miles) ⓘUranus Mine, Kleinrückerswalde, Annaberg-Buchholz, Erzgebirgskreis, Saxony, Germany
18.0km (11.2 miles) ⓘStraßburger Glück Mine, Niederschlag, Bärenstein, Erzgebirgskreis, Saxony, Germany
21.2km (13.2 miles) ⓘSvornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
26.1km (16.2 miles) ⓘVykmanov, Ostrov, Karlovy Vary District, Karlovy Vary Region, Czech Republic
31.2km (19.4 miles) ⓘTisová, Kraslice, Sokolov District, Karlovy Vary Region, Czech Republic
36.1km (22.4 miles) ⓘThermal springs area, Karlovy Vary, Karlovy Vary District, Karlovy Vary Region, Czech Republic
43.9km (27.3 miles) ⓘHorní Luby deposit, Horní Luby, Luby, Cheb District, Karlovy Vary Region, Czech Republic
50.7km (31.5 miles) ⓘJeroným Mine, Čistá, Rovná, Sokolov District, Karlovy Vary Region, Czech Republic
57.2km (35.5 miles) ⓘLoitsch Quarry, Weida, Greiz District, Thuringia, Germany
References
Schlegel, Peter (1991) Die Mineralien der Grube 'Gelbe Birke' bei Schwarzenberg in Sachsen [The minerals of the 'Gelbe Birke' mine near Schwarzenberg in Saxony]. Lapis, 16 (6). 13-20; 58
 
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