Sample: 94SJP90

Sample ID:	94SJP90 ^[1]
Station ID:	94SJP90
AT Num:
Volcano:	Skookum Creek
Possible source:
Eruption:
Collector:	Preece, S. J.
Date sampled:	1994-00-00
Sample type 1:	Lava
Color:
Final unit:
Text Description:	Sample is from a rubbly flow outcrop on the south-west end of Tanada Lake. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, feldspar, minor alteration and a high relief mineral. Plagioclase phenocrysts are up to 2.62 mm and some have sieve textured zones, strong normal or oscillatory zoning, and are frequently rounded. Clinopyroxene phenocrysts are up to 1.25 mm. Opaque phenocrysts are up to 0.35 mm. 99.0% matrix, 0.8% plagioclase, 0.1% opaque, 0.1% alteration.
Sample Location:

References Cited

[1] Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex, 1997

Preece, S. J., 1997, Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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