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Bakstevalåsen, Gunhildrud, Øvre Eiker, Buskerud, Norway

A small 6 m long and 15-4o cm thick amazonite-pegmatite dyke found as a sill intruded into the Fossum formation.



References:
- Hurum, J. H; Jahren, J.; Berg, H.-J. & Bjerkgård, T. (1997a): En eksotisk pegmatitt i kambrosiluren ved Eikeren, Buskerud. Bergverksmuseets skrift 12, 31-33
- Hurum, J. H; Jahren, J.; Berg, H.-J. & Bjerkgaard, T. (1997b): En eksotisk pegmatitt i kambrosiluren ved Eikeren, Buskerud. STEIN 24 (3), 125-128
- Jahren, J.; Berg, H.J.; Hurum, J.H. & Wulff-Pedersen, E. (1998): Nye undersøkelser av amazonitt-genthelvin pegmatitten fra Fiskum, Øvre Eiker. Bergverksmuseets Skrift 14, 13-16





Mineral List:
Albite
Allanite-(Ce)
Andradite
Arsenopyrite
Astrophyllite
Biotite
Bustamite
Cassiterite
Columbite ?
Columbite-(Fe)
Danburite
Dravite
Fluorite
Fergusonite-(Y)
'Gadolinite' ?
Galena
Genthelvite
Goethite
Halite
Halloysite
'Hellandite' ?
Helvite
Hydrohalite
Ilmenite
Löllingite
Microcline
Microcline
var: Amazonite

Molybdenite
Phenakite
Pyrochlore
Quartz
var: Smoky Quartz

Scheelite
Schorl
Sepiolite
Sylvite
Tennantite
Thorite
Titanite
Zircon


39 entries listed. 31 valid minerals. 1 erroneous literature entry.

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