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Hogtuvaite - Bordvedåga, Høgtuva, Rana, Nordland, Norway (type locality)
(#:MINS9038)
Black crystal of Høgtuvaite up to 1,7 cm in matrix from the type locality.
Formula :
(Ca,Na)
2
(Fe
2+
,Fe
3+
,Ti
4+
)
6
[O
2
/Be(Si,Al)
5
O
18
]
System:
triclinic
Hardness:
5½
Rarity:
very rare
Strunz id:VIII/F.14-35 - SILICATES
Name origin:
Named for the Høgtuva peak, the nearest significant reference point in the area of the type locality in Nordland, Norway. The peak is located about 7 km NW of the TL. It was first found in 1983 by Ingvar Lindahl (Norwegian Geological Survey) during uranium exploration in the area, and named by Grauch et al. (1994).
Specimen weight:31 gr.
Crystal size:Up to 1,7 cm long
Overall size: 47mm x 35 mm x 20 mm
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