Borgenåsen, Asker, Akershus, Norway

Miarolitic cavities in Drammens granite near contactzone with hornfels
Ref.:
-Eldjarn, K. (1994): Uvitt-dravitt fra Borgenåsen, Asker. STEIN 21 (2), 148-151
Miarolitic cavities in granite close to the contact with cambrosilurian sediments altered to hornfels. Many cavities were exposed during a period of development in the 1970'ies.

Mineral List:

	Albite

	Anatase

	Dravite

	'Dravite-Uvite Series'

	'Feldspar Group'

	Muscovite

	Orthoclase

	Quartz

	Quartz var: Amethyst

	var: Smoky Quartz

	Schorl

	Uvite

12 entries listed. 8 valid minerals.

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