Sample: 94SJP91

Sample ID:	94SJP91 ^[1]
Station ID:	94SJP91
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, vesicular, holocrystalline, glomeroporphyritic with a matrix of cryptocrystalline material, plagioclase, opaque and a high relief mineral. Plagioclase phenocrysts are up to 3.37 mm and frequently have rounded edges, oscillatory zoning, and/or normal zoning. Opaque pseudomorphs after clinopyroxene? are up to 1.75 mm. Clinopyroxene phenocrysts are up to 0.1 mm. Opaque phenocrysts (not pseudomorphs) are up to 0.25 mm. 96.5% matrix, 3.3% plagioclase, 0.2% 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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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