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Julgoldite-(Fe3+)
Type Locality
Långban, Filipstad, Värmland, Sweden
Mineral Data
Ca
2
(Fe
3+
,Mg)(Fe
3+
,Al)
2
(Si
2
O
7
)(SiO
4
)(OH,O)
2
·H
2
O
Strunz:
9.BG.20
Physical Properties
Crystal System:
Monoclinic
Hardness:
4.5
