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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Tourmaline from
S35 motorway tunnel (Kirchdorf tunnel), Kirchdorf, Pernegg an der Mur, Bruck-Mürzzuschlag District, Styria, Austria


Locality type:Tunnel
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view S35 motorway tunnel (Kirchdorf tunnel), Kirchdorf, Pernegg an der Mur, Bruck-Mürzzuschlag District, Styria, Austria
Data Identifiers
Mindat Occurrence Record ID:540451
Long-form Identifier:1:3:540451:3
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
8.6km (5.4 miles) ⓘSchlossberg tunnel, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
15.5km (9.6 miles) ⓘLur, Semriach, Graz-Umgebung District, Styria, Austria
16.7km (10.4 miles) ⓘLambachgraben quarry ("Harterbachgraben" quarry), Hadersdorf, Kindberg, Bruck-Mürzzuschlag District, Styria, Austria
17.9km (11.1 miles) ⓘPlankogel (Antoni adit; Neu Barbara adit), Gasen, Weiz District, Styria, Austria
19.3km (12.0 miles) ⓘRailway tunnel, Galgenberg, Leoben, Leoben District, Styria, Austria
21.4km (13.3 miles) ⓘPegmatite outcrops, Sankt Radegund bei Graz, Graz-Umgebung District, Styria, Austria
23.6km (14.7 miles) ⓘFreßnitzkogel, Freßnitzgraben, Krieglach, Bruck-Mürzzuschlag District, Styria, Austria
24.8km (15.4 miles) ⓘRotriegel ridge, Freßnitzgraben, Krieglach, Bruck-Mürzzuschlag District, Styria, Austria
25.1km (15.6 miles) ⓘFreßnitzgraben, Krieglach, Bruck-Mürzzuschlag District, Styria, Austria
25.9km (16.1 miles) ⓘHaringgraben gypsum mine, Oberort (Tragöß-Oberort), Tragöß-Sankt Katharein, Bruck-Mürzzuschlag District, Styria, Austria
References
Kolitsch, U. et al. (2008)
 
and/or  
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