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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Hastingsite from
Almunge complex, Almunge, Uppsala, Uppsala County, Sweden


03847640017369776884237.jpg
Hastingsite

Almunge complex, Almunge, Uppsala, Uppsala County, Sweden
01099230017566732106529.jpg
Hastingsite

Almunge complex, Almunge, Uppsala, Uppsala County, Sweden
00494200017272028834136.jpg
Hastingsite

Almunge complex, Almunge, Uppsala, Uppsala County, Sweden
01099230017566732106529.jpg
Hastingsite

Almunge complex, Almunge, Uppsala, Uppsala County, Sweden
00494200017272028834136.jpg
Hastingsite

Almunge complex, Almunge, Uppsala, Uppsala County, Sweden
01099230017566732106529.jpg
Hastingsite

Almunge complex, Almunge, Uppsala, Uppsala County, Sweden
Locality type:Complex
Classification
Species:Hastingsite
Formula:NaCa2(Fe42+Fe3+)(Si6Al2)O22(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hastingsite data
Locality Data:Click here to view Almunge complex, Almunge, Uppsala, Uppsala County, Sweden
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:57607
Long-form Identifier:1:3:57607:1
GUID (UUID V4):0
References
BGIU 12, 175
Quensel, P. D. (1913) The alkaline rocks of Almunge. Bulletin of the Geological Institution of the University of Upsala, 12. 129-200
Gorbatschev, R. (1958) On the alkali rocks of Almunge. A preliminary report on a new survey. Bulletin of the Geological Institution of the University of Upsala, 39. 1-69
Doig, Ronald (1970) An alkaline rock province linking Europe and North America. Canadian Journal of Earth Sciences, 7 (1) 22-28 doi:10.1139/e70-002
Gorbatschev, Roland (1970) K-Ar age of biotite from the Almunge alkaline intrusion. Geologiska Föreningen i Stockholm Förhandlingar, 92 (4) 501-502 doi:10.1080/11035897009452981
 
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