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Yttrialite-(Y), keiviite-(Y)
€11.00
Dark brown spots of yttrialite-(Y) in feldspar
Holmtjärn pegmatite, Idkerberget, Dalarna, Sweden
Dark brown pods of yttrialite-(Y) in feldspar, with lamellar inclusions of cream-coloured keiviite-(Y)
BO_731
1 Item
Data sheet
- Locality
- Holmtjärn pegmatite, Idkerberget, Dalarna, Sweden
- Size category
- Small miniature
- Size (cm)
- 3 x 2.5 x 1.5
- Weight
- 11 g
- Formula
- (Y,Th)2Si2O7 (yttrialite); Y2Si2O7 (keiviite)
- Properties
- Resinous-greasy appearance; dark brown; slightly radioactive
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Dark brown spots of yttrialite-(Y) in feldspar
Holmtjärn pegmatite, Idkerberget, Dalarna, Sweden