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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Astrophyllite from
Johs Nilsens Quarry, Tvedalen, Larvik Commune, Vestfold, Norway


Locality type:Quarry
Classification
Species:Astrophyllite
Formula:K2NaFe72+Ti2[Si4O12]2O2(OH)4F
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Astrophyllite data
Locality Data:Click here to view Johs Nilsens Quarry, Tvedalen, Larvik Commune, Vestfold, Norway
Data Identifiers
Mindat Occurrence Record ID:975167
Long-form Identifier:1:3:975167:5
GUID (UUID V4):0
Nearest other occurrences of Astrophyllite
0.4km (0.2 miles) ⓘA/S Granit Quarry, Tuften, Tvedalen, Larvik Commune, Vestfold, Norway
0.8km (0.5 miles) ⓘTuften, Tvedalen, Larvik Commune, Vestfold, Norway
1.1km (0.7 miles) ⓘSaga 1 Quarry, Sagåsen, Auenlandet, Porsgrunn, Telemark, Norway
1.3km (0.8 miles) ⓘHeia Quarry, Tvedalen, Larvik Commune, Vestfold, Norway
1.3km (0.8 miles) ⓘSagåsen Quarry, Sagåsen, Auenlandet, Porsgrunn, Telemark, Norway
3.4km (2.1 miles) ⓘBarkevika, Barkevik area, Larvik Commune, Vestfold, Norway
3.4km (2.1 miles) ⓘBarkevikstranda, Barkevika, Barkevik area, Larvik Commune, Vestfold, Norway
4.1km (2.5 miles) ⓘBiong, Barkevik area, Larvik Commune, Vestfold, Norway
4.5km (2.8 miles) ⓘNatrolittodden, Vesle Arøya, Larvik Commune, Vestfold, Norway
4.6km (2.8 miles) ⓘEudidymite-Epididymite locality, Vesle Arøya, Larvik Commune, Vestfold, Norway
References
Peter Andresen collection, 2016.
 
and/or  
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