Mineral description : Jinshajiangite

Jinshajiangite from Norra Kärr. Two brownish red spots with black magnesio arfvedsonite.

Mineral class	Silicates : Nesosilicates : Jinshajiangite group
Chemical formula	(Na,K)5(Ba,Ca)4(Fe,Mn)15(Ti,Fe,Nb,Zr)8Si15O64(F,O,OH)6
Crystal system	Monoclinic
Habitus	Thin flat tabular crystals.
Cleavage	Perfect in [010] and [100]
Hardness	4.5 - 5
Density	3.61
Color	Brownish red, yellowish red, dark red to black.
Streak	Light yellow.
Luster	Vitreous.
Description
Occurance	In syenites.
Associates
Notes	Type Locality: Jinshajiang River, Sichuan, China.
Localities	A rare mineral in scandinavia. Sweden : Norra Kärr, Gränna, Småland. As small brownish red crystals together with magnesio arfvedsonite.

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