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Caryinite

Named for a Greek word meaning “nut-brown,” in reference to the mineral’s typical color. Caryinite is a rare mineral that can be found only in Sweden at its type locality at Langban in Varmland, and at the Sjogruvan mine in Vastmanland. Caryinite is found in veinlets through skarn in a metamorphosed iron-manganses orebody. Associated minerals include berzeliite, adelite, hedyphane, hausmannite, shodonite, diopside, and calcite. Brown to yellow brown fine grained masses of greasy-looking crystals.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/caryinite.pdf
- Formula
- (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3
- Crystal System
- Monoclinic
- Crystal Habit
- Cleaveable, Massive - Granular
- Cleavage
- Distinct, Distinct, None
- Luster
- Greasy (Oily)
- Color
- brown, yellow brown
- Streak
- light brown
- Class
- Monoclinic - Prismatic
- Fracture
- Brittle - Uneven
- Hardness
- 4
- WebMineral
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Caryinite from Långban, Filipstad, Värmland, Sweden

Mn-skarn mineral rich in Rhodonite (pink) with large crystal grains to 5mm showing either good cleavage surfaces or crystal faces. There are only two localities thus far for this rare arsenate, and it was first discovered in 1874!