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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Heulandite Subgroup from
Tischwand, St Johann im Mauerthale, Rossatz-Arnsdorf, Krems-Land District, Lower Austria, Austria


Classification
Species:'Heulandite Subgroup' (not an IMA approved species)
Formula:(Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Heulandite Subgroup data
Locality Data:Click here to view Tischwand, St Johann im Mauerthale, Rossatz-Arnsdorf, Krems-Land District, Lower Austria, Austria
Data Identifiers
Mindat Occurrence Record ID:856802
Long-form Identifier:1:3:856802:1
GUID (UUID V4):0
Nearest other occurrences of Heulandite Subgroup
8.4km (5.2 miles) ⓘSiebenhandl quarry (Kraxnerklippe), Felbring, Maria Laach am Jauerling, Krems-Land District, Lower Austria, Austria
11.5km (7.1 miles) ⓘRenz quarry, Elsenreith, Kottes-Purk, Zwettl District, Lower Austria, Austria
14.3km (8.9 miles) ⓘZwettler Leiten, Felling, Gföhl, Krems-Land District, Lower Austria, Austria
24.1km (15.0 miles) ⓘLoiser Berg, Langenlois, Langenlois, Krems-Land District, Lower Austria, Austria
24.6km (15.3 miles) ⓘNeumühle quarry, Loistal, Schiltern, Langenlois, Krems-Land District, Lower Austria, Austria
26.5km (16.5 miles) ⓘLoja, Persenbeug-Gottsdorf, Melk District, Lower Austria, Austria
58.5km (36.4 miles) ⓘPoschacher Quarry, Artolz, Pfaffenschlag bei Waidhofen, Waidhofen an der Thaya District, Lower Austria, Austria
59.2km (36.8 miles) ⓘHengl quarry, Eibenstein an der Thaya, Raabs an der Thaya, Waidhofen an der Thaya District, Lower Austria, Austria
89.3km (55.5 miles) ⓘTraun river dam (Traun power plant), Pucking, Linz-Land District, Upper Austria, Austria
98.1km (61.0 miles) ⓘS6 motorway tunnel (Tanzenberg tunnel), Tanzenberg, Kapfenberg, Bruck-Mürzzuschlag District, Styria, Austria
References
Kiesewetter, L. & Knobloch, G. (2003): Die Minerale des Raumes Spitz/Donau. MEFOS, 14/26, 4-22.
 
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