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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Schorl from
Norrskogen, Arlanda, Sigtuna, Stockholm County, Sweden


00715320017368221424079.jpg
Schorl

Norrskogen, Arlanda, Sigtuna, Stockholm County, Sweden
00715320017368221424079.jpg
Schorl

Norrskogen, Arlanda, Sigtuna, Stockholm County, Sweden
05268050017272356933586.jpg
Schorl

Norrskogen, Arlanda, Sigtuna, Stockholm County, Sweden
Locality type:Pegmatite
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Norrskogen, Arlanda, Sigtuna, Stockholm County, Sweden
Data Identifiers
Mindat Occurrence Record ID:280471
Long-form Identifier:1:3:280471:2
GUID (UUID V4):0
Nearest other occurrences of Schorl
30.3km (18.8 miles) ⓘGruvdalen Mine (Skeppsdal), Österåker, Stockholm County, Sweden
64.1km (39.8 miles) ⓘDannemora Mine, Dannemora, Östhammar, Uppsala County, Sweden
76.3km (47.4 miles) ⓘÄngsholmarna Norra, Haninge, Stockholm County, Sweden
76.3km (47.4 miles) ⓘStora Vika, Nynäshamn, Stockholm County, Sweden
76.9km (47.8 miles) ⓘNyköpingsgruvan, Utö Mines, Utö, Haninge, Stockholm County, Sweden
76.9km (47.8 miles) ⓘUtö Mines, Utö, Haninge, Stockholm County, Sweden
81.0km (50.3 miles) ⓘKapelludden, Rånö, Haninge, Stockholm County, Sweden
81.1km (50.4 miles) ⓘNorrö Mica Quarry, Norrö, Haninge, Stockholm County, Sweden
82.9km (51.5 miles) ⓘSala Silver Mine, Sala, Sala Municipality, Västmanland County, Sweden
References
Nysten, Per (1998) Mineralogy of a late Svecofennian Granitic Pegmatite, Norrskogen, Uppland, Sweden, in Abstracts. 17th General Meeting of the International Mineralogical Association, August 9-14, Toronto, Canada A 150.
 
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