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
Stubenberg Quarry, Stubenberg am See, Hartberg-Fürstenfeld District, Styria, Austria


Locality type:Quarry
Classification
Species:'Tourmaline' (not an IMA approved species)
Formula:AD3G6(T6O18)(BO3)3X3Z
Comments:in pegmatites - probably shorl, but not yet microprobed
Habit:euhedral to anhedral
Colour:black
Abundance at site:Common
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Tourmaline data
Locality Data:Click here to view Stubenberg Quarry, Stubenberg am See, Hartberg-Fürstenfeld District, Styria, Austria
Data Identifiers
Mindat Occurrence Record ID:294128
Long-form Identifier:1:3:294128:8
GUID (UUID V4):0
Nearest other occurrences of Tourmaline
5.2km (3.2 miles) ⓘTalc mine, Rabenwald (Rabenwaldkogel), Anger, Weiz District, Styria, Austria
11.0km (6.8 miles) ⓘKoglhof pegmatites, Birkfeld, Weiz District, Styria, Austria
13.5km (8.4 miles) ⓘSchloffereck, Miesenbach bei Birkfeld, Weiz District, Styria, Austria
21.5km (13.4 miles) ⓘPlankogel (Antoni adit; Neu Barbara adit), Gasen, Weiz District, Styria, Austria
22.8km (14.2 miles) ⓘFaschingbauerkreuz - Reithkogel area (Gießhübler Berg; Gießhübler Holzschlag), Fischbach, Weiz District, Styria, Austria
22.8km (14.2 miles) ⓘFriesenbichler quarry (Rohrdorfer quarry; Kohlbacher quarry), Schindergraben, Falkenstein, Fischbach, Weiz District, Styria, Austria
23.3km (14.5 miles) ⓘPegmatite outcrops, Sankt Radegund bei Graz, Graz-Umgebung District, Styria, Austria
24.8km (15.4 miles) ⓘQuartzite quarry (Steinbruch Rohrdorfer; Tanzer quarry), Falkenstein, Fischbach, Weiz District, Styria, Austria
30.6km (19.0 miles) ⓘFeistritzwald (Feistritz valley), Northern District, Prinzkogel mines, Prinzkogel (Prinzenkogel), Rettenegg, Weiz District, Styria, Austria
30.8km (19.2 miles) ⓘLur, Semriach, Graz-Umgebung District, Styria, Austria
References
Franz Bernhard
 
and/or  
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