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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Calcite from
S6 motorway tunnel (Heuberg tunnel; St. Ruprecht tunnel; Bruck Tunnel), Bruck an der Mur, Bruck-Mürzzuschlag District, Styria, Austria


Locality type:Tunnel
Classification
Species:Calcite
Formula:CaCO3
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Associated Minerals Based on Photo Data:
Pyrite1
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view S6 motorway tunnel (Heuberg tunnel; St. Ruprecht tunnel; Bruck Tunnel), Bruck an der Mur, Bruck-Mürzzuschlag District, Styria, Austria
Data Identifiers
Mindat Occurrence Record ID:966596
Long-form Identifier:1:3:966596:5
GUID (UUID V4):0
Nearest other occurrences of Calcite
3.1km (1.9 miles) ⓘGloriette, Bruck an der Mur, Bruck-Mürzzuschlag District, Styria, Austria
4.9km (3.0 miles) ⓘGeieregg, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
4.9km (3.0 miles) ⓘSchinitzkogel, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
4.9km (3.0 miles) ⓘS35 motorway tunnel (Kaltenbach tunnel), Zlatten, Pernegg an der Mur, Bruck-Mürzzuschlag District, Styria, Austria
5.5km (3.4 miles) ⓘSchlossberg tunnel, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
5.6km (3.5 miles) ⓘEmberg, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
5.8km (3.6 miles) ⓘEuropaplatz, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
6.5km (4.1 miles) ⓘMugel, Niklasdorf, Leoben District, Styria, Austria
6.8km (4.2 miles) ⓘS35 motorway tunnel (Kirchdorf tunnel), Kirchdorf, Pernegg an der Mur, Bruck-Mürzzuschlag District, Styria, Austria
7.6km (4.7 miles) ⓘS6 motorway tunnel (Tanzenberg tunnel), Tanzenberg, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
References
C.Auer (2016)
 
and/or  
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