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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Muscovite from
Schlossberg tunnel, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria


Locality type:Processing Plant
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Schlossberg tunnel, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
Data Identifiers
Mindat Occurrence Record ID:1982933
Long-form Identifier:1:3:1982933:7
GUID (UUID V4):0
Nearest other occurrences of Muscovite
5.7km (3.5 miles) ⓘLead mine, Graschnitzgraben, Sankt Marein im Mürztal, Bruck-Mürzzuschlag District, Styria, Austria
7.2km (4.4 miles) ⓘS35 motorway tunnel (Kaltenbach tunnel), Zlatten, Pernegg an der Mur, Bruck-Mürzzuschlag District, Styria, Austria
10.8km (6.7 miles) ⓘLambachgraben quarry ("Harterbachgraben" quarry), Hadersdorf, Kindberg, Bruck-Mürzzuschlag District, Styria, Austria
13.7km (8.5 miles) ⓘOberdorf magnesite deposit, Oberdorf (Oberdorf an der Laming), Tragöß-Sankt Katharein, Bruck-Mürzzuschlag District, Styria, Austria
18.3km (11.4 miles) ⓘHaringgraben gypsum mine, Oberort (Tragöß-Oberort), Tragöß-Sankt Katharein, Bruck-Mürzzuschlag District, Styria, Austria
18.4km (11.4 miles) ⓘHercynite-chromite occurrence, Breitenau am Hochlantsch, Bruck-Mürzzuschlag District, Styria, Austria
19.0km (11.8 miles) ⓘRailway tunnel, Galgenberg, Leoben, Leoben District, Styria, Austria
20.3km (12.6 miles) ⓘFreßnitzkogel, Freßnitzgraben, Krieglach, Bruck-Mürzzuschlag District, Styria, Austria
21.7km (13.5 miles) ⓘPlankogel (Antoni adit; Neu Barbara adit), Gasen, Weiz District, Styria, Austria
21.9km (13.6 miles) ⓘUnnamed mine, Teschengraben, Krieglach, Bruck-Mürzzuschlag District, Styria, Austria
References
Auer, C. (2026): 2400) Almandin, Amphibol, Analcim, Aragonit, Baryt, Calcit, Chalkopyrit, Chlorit, Dolomit, Feldspat, Ferrierit-(Mg), Gips, Graphit, Muskovit, Natrojarosit, Pyrit, Pyrrhotin, Quarz (Bergkristall), Sphalerit sowie Turmalin vom Schlossbergstollen bei Kapfenberg, Bezirk Bruck an der Mur, Steiermark. Pp. 484-487 in Walter, F. et al. (2026): Neue Mineralfunde aus Österreich LXXV. Carinthia II, 216./136., 397-506.
 
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