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Biotite from
Huken Quarry, Grorud, Oslo, Norway

Description
Quality of samples:	not specified / average specimens
Confirmation
Validity:	Believed Valid
References
References:	Brøgger, W.C. (1894) Die Eruptivgesteine des Kristianiagebietes. 1. Die Gesteine der Grorudit -Tinguait - Serie. (Videnskabsselskabets Skrifter I. Mat.-Naturv. Kl. 1894, no. 4) p. 10
Data
Mineral Data:	Click here to view Biotite data
Locality Data:	Click here to view Huken Quarry, Grorud, Oslo, Norway

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