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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Aegirine from
Bellavitaåsen South, Søndre Sunde, Østerøya, Sandefjord, Vestfold, Norway


Locality type:Pegmatite
Classification
Species:Aegirine
Formula:NaFe3+Si2O6
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Aegirine data
Locality Data:Click here to view Bellavitaåsen South, Søndre Sunde, Østerøya, Sandefjord, Vestfold, Norway
Data Identifiers
Mindat Occurrence Record ID:795676
Long-form Identifier:1:3:795676:8
GUID (UUID V4):0
Nearest other occurrences of Aegirine
0.3km (0.2 miles) ⓘØsterøyveien, Søndre Sunde, Østerøya, Sandefjord, Vestfold, Norway
1.0km (0.6 miles) ⓘHafallen, Østerøya, Sandefjord, Vestfold, Norway
1.8km (1.1 miles) ⓘOrmestad School, Vesterøya, Sandefjord, Vestfold, Norway
1.9km (1.2 miles) ⓘKariåsen, Vesterøya, Sandefjord, Vestfold, Norway
2.1km (1.3 miles) ⓘHusebyåsen prospect, Vesterøya, Sandefjord, Vestfold, Norway
2.3km (1.4 miles) ⓘBuer, Vesterøya, Sandefjord, Vestfold, Norway
2.5km (1.5 miles) ⓘIndustriveien, Vindal, Vesterøya, Sandefjord, Vestfold, Norway
2.6km (1.6 miles) ⓘTangenbukta, Veløyveien, Vesterøya, Sandefjord, Vestfold, Norway
2.6km (1.6 miles) ⓘNamløsholmen, Mefjorden, Sandefjord, Vestfold, Norway
2.8km (1.8 miles) ⓘFramnes School, Framnes, Vesterøya, Sandefjord, Vestfold, Norway
References
Larsen, Knut Edvard (2019) Noen funn av mineraler i Norge 2018-2019 [Some mineral discoveries in Norway 2018-2019]. STEIN. Magasin for populærgeologi, 46 (3). 3-10
 
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