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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Opal from
Husebyåsen prospect, Vesterøya, Sandefjord, Vestfold, Norway


Locality type:Prospect
Classification
Species:Opal
Formula:SiO2 · nH2O
Confirmation
Validity:Confirmed
Confirmation Methods:Visually Identified
Data
Mineral Data:Click here to view Opal data
Locality Data:Click here to view Husebyåsen prospect, Vesterøya, Sandefjord, Vestfold, Norway
Data Identifiers
Mindat Occurrence Record ID:772489
Long-form Identifier:1:3:772489:3
GUID (UUID V4):0
Nearest other occurrences of Opal
1.5km (0.9 miles) ⓘBuer, Vesterøya, Sandefjord, Vestfold, Norway
1.9km (1.2 miles) ⓘKamfjord Quarry, Vesterøya, Sandefjord, Vestfold, Norway
5.9km (3.7 miles) ⓘKjela, Yxney, Østerøya, Sandefjord, Vestfold, Norway
7.7km (4.8 miles) ⓘAasmund Berg Quarries, Fokserød, Sandefjord, Vestfold, Norway
14.9km (9.2 miles) ⓘBratthagen 3 hillside pegmatites, Lågendalen, Hedrum, Larvik Commune, Vestfold, Norway
17.3km (10.8 miles) ⓘLysebo roadcut, Lysebo, Hedrum, Larvik Commune, Vestfold, Norway
17.5km (10.8 miles) ⓘStavern (Fredriksvärn), Larvik Commune, Vestfold, Norway
17.5km (10.8 miles) ⓘRoadcut 1, Pauler, Larvik Commune, Vestfold, Norway
17.7km (11.0 miles) ⓘVardåsen Quarry, Malerød, Larvik Commune, Vestfold, Norway
18.9km (11.7 miles) ⓘFarmenrøysa, Hedrum, Larvik Commune, Vestfold, Norway
References
Berge, Svein Arne (2013) Mineralene i Husebyåsen feltspatbrudd, Vesterøya, Sandefjord [The minerals of Husebyåsen feldspar quarry, Vesterøya, Sandefjord]. Norsk Bergverksmuseum Skrift, 50. 93-99
 
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