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Thortveitite from
Tuftane (Tuftan; Tuptane), Frikstad (Frigstad), Iveland, Aust-Agder, Norway



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Tuftane (Tuftan; Tuptane), Frikstad (Frigstad), Iveland, Aust-Agder, Norway
© Knut Eldjarn
Description
Habit:Prismatic crystal in feldspar
Colour:Green
Quality of samples:Excellent - world class for species or very significant. (!!)
Confirmation
Validity:Believed Valid
References
References:J.Ralph Collection + Neumann, H. & Sverdrup, T.L.(1960): Contributions to the mineralogy of Norway No. 8. Davidite from Tuftan, Iveland. Norsk Geologisk Tidsskrift 40: 277-288
Comments
Collected by Olav Landsverk - specimen in J.Ralph collection
Mineral and/or Locality
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