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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
Bjordammen, Bamble, Telemark, Norway


07709900017271985422934.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
03319150017271985453233.jpg
Dravite, etc.

Bjordammen, Bamble, Telemark, Norway
08057020017271985575891.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
04509620017271985633774.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
07709900017271985422934.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
03319150017271985453233.jpg
Dravite, etc.

Bjordammen, Bamble, Telemark, Norway
00079510017368368851027.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
07381410017368368855989.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
07709900017271985422934.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
03319150017271985453233.jpg
Dravite, etc.

Bjordammen, Bamble, Telemark, Norway
08057020017271985575891.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
04509620017271985633774.jpg
Dravite

Bjordammen, Bamble, Telemark, Norway
Locality type:Farm
Classification
Species:Dravite
Formula:NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz11
Halloysite7
Biotite6
Cordierite5
Phlogopite1
Data
Mineral Data:Click here to view Dravite data
Locality Data:Click here to view Bjordammen, Bamble, Telemark, Norway
Photo GalleryView Gallery (6 photos)
Data Identifiers
Mindat Occurrence Record ID:557161
Long-form Identifier:1:3:557161:1
GUID (UUID V4):0
Localities for Dravite in this Region
Bjordam Sunstone Quarry, Bjordammen, Bamble, Telemark, Norway
Hullvann, Bjordammen, Bamble, Telemark, Norway
Nearest other occurrences of Dravite
0.2km (0.1 miles) ⓘBjordam Sunstone Quarry, Bjordammen, Bamble, Telemark, Norway
0.3km (0.2 miles) ⓘHullvann, Bjordammen, Bamble, Telemark, Norway
6.7km (4.2 miles) ⓘValberg Quarry, Valberg, Kragerø, Telemark, Norway
7.7km (4.8 miles) ⓘKammerfoss area, Kragerø, Telemark, Norway
8.1km (5.1 miles) ⓘHafredal II quarry, Midtre Havredal, Havredal, Bamble, Telemark, Norway
8.5km (5.3 miles) ⓘHavredal I quarry, Midtre Havredal, Havredal, Bamble, Telemark, Norway
23.5km (14.6 miles) ⓘMule nursery home, Mule, Porsgrunn, Telemark, Norway
28.1km (17.4 miles) ⓘRavneberget Quarry, Søndeled, Risør, Agder, Norway
31.4km (19.5 miles) ⓘMoland Industrial Site, Akland, Risør, Agder, Norway
67.8km (42.1 miles) ⓘBråstad Mines, Øyestad, Arendal, Agder, Norway
References
Nelen, Joseph A., Dunn, Pete J., Appleman, Daniel, Norberg, Julie (1977) Uvite, a New (Old) Common Member of the Tourmaline Group and Its Implications for Collectors. The Mineralogical Record, 8 (2) 100-108 p.105 - Table 3, with an analysis of dravite
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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