NGT44-1-06
1964
Contributions to the mineralogy of Norway. No. 25. Pyrophanite in the southern part of the Oslo area.
44
1
39-42

To Professor Ivar Oftedal with kindest regards and congratulations on the occasion of his 70th birthday.

Introduction
Routine X-ray powder examination of unidentified material in the collections of Mineralogisk-Geologisk Museum in Oslo proved the existence of pyrophanite in specimens from the nepheline syenite pegmatites in the Langesund-fiord area. Pyrophanite can therefore be added to the long list of minerals from those famous deposits. (Brøgger 1890 and Neumann 1960).

0029-196x
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