Sample: 94SJP83

Sample ID:	94SJP83 ^[1]
Station ID:	94SJP83
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:	Approximately 60’ wide dike trending WNW-ESE cutting through andesite flows in between Sites 8 and 9. Fine-grained, hypocrystalline, porphyritic with a matrix of colorless glass, opaque and plagioclase. Plagioclase phenocrysts (An30 - An60) are up to 2.5 mm and some have sieve textured zones with large, wormy, glass inclusions and complex zoning. Amphibole phenocrysts are up to 1.25 mm with green-brown pleochroism and black coronas; some have opaque inclusions. Orthopyroxene phenocrysts are up to 1 mm and are strongly pleochroic. Opaque phenocrysts are up to 0.3 mm.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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