Sorosilicate (Si2O7 groups), dollaseite group
Hardness: 6½ to 7
Streak: Light brown
Dollaseite-(Ce) occurs in tactite replacement deposits developed during metamorphism of
Associated minerals include tremolite, norbergite,
magnetite, dolomite and
At the type locality, the Östanmossa mine, Röberg ore field, Norberg, Västmanland County, Sweden, dollaseite-(Ce) forms massive brown aggregates of submillimeter-sized crystals associated with tremolite, norbergite, and calcite. It is also reported from several mines in the Moklinta ore field, Avesta, Sweden (R&M 86-5.452).
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