Images
Formula:
Formerly the formula was given as
(Na,Pb)(Ca,Na)CaMn2+2(AsO4)3
but now the IMA formula is
NaCaCaMn2(AsO4)3
Anhydrous arsenate,
alluaudite group,
alluaudite supergroup
manganese-bearing mineral
Crystal System: Monoclinic
Specific gravity: 4.29 measured, 4.486 calculated
Hardness: 4
Streak: Light brown
Colour: Brown to yellowish brown; light yellow-brown in transmitted light
Solubility: Soluble in nitric acid
Environments:
Caryinite is a rare arsenate, found almost exclusively in Sweden.
At the type locality, Långban, Filipstad, Värmland, Sweden, caryinite occurs in veinlets in
skarn in a manganese-iron metamorphosed orebody, associated with
hedyphane, hausmannite,
calcite and berzeliite
(Mindat HOM).
Caryinite alters to berzeliite
(Mindat).
Back to Minerals