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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Rock Crystal from
Schlossberg tunnel, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria


Locality type:Processing Plant
Classification
Species:Quartz var: Rock Crystal
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Rock Crystal data
Locality Data:Click here to view Schlossberg tunnel, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
Data Identifiers
Mindat Occurrence Record ID:1982951
Long-form Identifier:1:3:1982951:3
GUID (UUID V4):0
Nearest other occurrences of Rock Crystal
1.5km (0.9 miles) ⓘGeieregg, Kapfenberg, 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
14.0km (8.7 miles) ⓘGöriach, Turnau, Bruck-Mürzzuschlag District, Styria, Austria
21.4km (13.3 miles) ⓘMagnesite deposit, Sattlerkogel, Veitsch, Sankt Barbara im Mürztal, Bruck-Mürzzuschlag District, Styria, Austria
23.2km (14.4 miles) ⓘWaldstein ruin, Waldstein, Deutschfeistritz, Graz-Umgebung District, Styria, Austria
23.3km (14.5 miles) ⓘUpper Topenauer adit, Notberg, Guggenbach, Übelbach, Graz-Umgebung District, Styria, Austria
24.7km (15.3 miles) ⓘGreitnerkogel quarry, Waldstein, Deutschfeistritz, Graz-Umgebung District, Styria, Austria
26.9km (16.7 miles) ⓘGraphite mine, Kaisersberg, Sankt Stefan ob Leoben, Leoben District, Styria, Austria
27.2km (16.9 miles) ⓘHartlegraben, Kaisersberg, Sankt Stefan ob Leoben, Leoben District, Styria, Austria
31.7km (19.7 miles) ⓘMagnesite quarry, Arzbach (Arzbachleiten), Neuberg an der Mürz, 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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