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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Dravite from
Kammerfoss area, Kragerø, Telemark, Norway


Locality type:Bridge
Classification
Species:Dravite
Formula:NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Colour:dark brown
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Dravite data
Locality Data:Click here to view Kammerfoss area, Kragerø, Telemark, Norway
Data Identifiers
Mindat Occurrence Record ID:558186
Long-form Identifier:1:3:558186:3
GUID (UUID V4):0
Nearest other occurrences of Dravite
4.1km (2.5 miles) ⓘValberg Quarry, Valberg, Kragerø, Telemark, Norway
7.4km (4.6 miles) ⓘHullvann, Bjordammen, Bamble, Telemark, Norway
7.5km (4.7 miles) ⓘBjordam Sunstone Quarry, Bjordammen, Bamble, Telemark, Norway
7.7km (4.8 miles) ⓘBjordammen, Bamble, Telemark, Norway
14.5km (9.0 miles) ⓘHafredal II quarry, Midtre Havredal, Havredal, Bamble, Telemark, Norway
14.9km (9.3 miles) ⓘHavredal I quarry, Midtre Havredal, Havredal, Bamble, Telemark, Norway
20.4km (12.7 miles) ⓘRavneberget Quarry, Søndeled, Risør, Agder, Norway
23.9km (14.8 miles) ⓘMoland Industrial Site, Akland, Risør, Agder, Norway
31.2km (19.4 miles) ⓘMule nursery home, Mule, Porsgrunn, Telemark, Norway
60.1km (37.4 miles) ⓘBråstad Mines, Øyestad, Arendal, Agder, Norway
References
Larsen, Alf Olav, Nordrum, Fred Steinar, Austrheim, Haakon (1999) Turmaliner i Norge [Tourmalines in Norway]. Norsk Bergverksmuseum Skrift, 15. Norsk Bergverksmuseum (Norwegian Mining Museum) 21-30
 
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