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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Plagioclase from
Spodumene prospect, Brandrücken, Frantschach-Sankt Gertraud, Wolfsberg District, Carinthia, Austria


Locality type:Prospect
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Spodumene prospect, Brandrücken, Frantschach-Sankt Gertraud, Wolfsberg District, Carinthia, Austria
Data Identifiers
Mindat Occurrence Record ID:1641983
Long-form Identifier:1:3:1641983:8
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
1.5km (0.9 miles) ⓘBrandhöhe, Glashütten, Bad Schwanberg, Deutschlandsberg District, Styria, Austria
1.6km (1.0 miles) ⓘGösler Hütte, Frantschach-Sankt Gertraud, Wolfsberg District, Carinthia, Austria
7.4km (4.6 miles) ⓘStoffhütte pegmatite, Deutschlandsberg, Deutschlandsberg District, Styria, Austria
9.4km (5.8 miles) ⓘBärofen, Bad Schwanberg, Deutschlandsberg District, Styria, Austria
10.0km (6.2 miles) ⓘMalteserhütte, Heb Alp, Hirschegg-Pack, Voitsberg District, Styria, Austria
12.7km (7.9 miles) ⓘHematite Mine, Waldenstein, Wolfsberg, Wolfsberg District, Carinthia, Austria
15.6km (9.7 miles) ⓘA2 motorway tunnel (Herzogberg tunnel), Herzogberg, Modriach, Edelschrott, Voitsberg District, Styria, Austria
16.2km (10.1 miles) ⓘAmazonite occurrence, pegmatite outcrops, Pack, Hirschegg-Pack, Voitsberg District, Styria, Austria
17.6km (10.9 miles) ⓘBasalt quarry, Kollnitz, Sankt Paul im Lavanttal, Wolfsberg District, Carinthia, Austria
19.0km (11.8 miles) ⓘEngelweingarten, Gamsgebirg, Stainz, Deutschlandsberg District, Styria, Austria
References
Keyser, William; Müller, Axel; Augland, Lars Eivind; Steiner, Ralf (2024) Rare-metal halos of lithium pegmatite at the Wolfsberg deposit, Austria, and their implications for exploration. Ore Geology Reviews, 171. 106179 doi:10.1016/j.oregeorev.2024.106179
 
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