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Yttrialite-(Y), kimuraite-(Y)
€48.00
Dark brown sections of yttrialite-(Y) in feldspar
Holmtjärn pegmatite, Idkerberget, Dalarna, Sweden
Dark reddish brown sections of yttrialite-(Y) and traces of keiviite-(Y) in feldspar, with surface coatings of white, silky kimuraite-(Y). Other minerals present are not identified. This is a moderately radioactive, large and rich piece of RE pegmatite from a long since abandoned mine.
BO_785
1 Item
Data sheet
- Locality
- Holmtjärn pegmatite, Idkerberget, Dalarna, Sweden
- Size category
- Large cabinet
- Size (cm)
- 9.5 x 7.5 x 4.5
- Weight
- 461 g
- Formula
- (Y,Th)2Si2O7
- Properties
- Vitreous-greasy appearance; dark brown; slightly radioactive
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Dark brown sections of yttrialite-(Y) in feldspar
Holmtjärn pegmatite, Idkerberget, Dalarna, Sweden