Sample: 94SJP75

Sample ID:	94SJP75 ^[1]
Station ID:	94SJP75
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 30’ thick flow at South Pass. Fine grained, hypocrystalline, trachytic, seriate porphyritic with a matrix of brown glass, opaque, plagioclase, alteration and pyroxene?. Plagioclase phenocrysts (An38 - An63) are up to 1.75 mm and occasionally have strong normal zoning. Olivine? phenocrysts are up to 0.6 mm and mostly altered. Opaque phenocrysts are up to 0.45 mm. Clinopyroxene phenocrysts are up to 0.22 mm. Trachyandesite.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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