Sample: 94SJP31

Sample ID:	94SJP31 ^[1]
Station ID:	94SJP31
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:	A 2-3' thick, subvertical dike trending N30E and cutting through silicic flows on the west side of Dome A at Site 2. In outcrop it is wall-like and can be followed into the lower part of the andesite package overlying the silicic flows. Fine-grained, seriate, hypocrystalline with a matrix of mesostasis, opaque, feldspar and clinopyroxene. Plagioclase phenocrysts (An22-An44) are 1.75-0.05 mm, some have complex zoning, some have one or more sieve textured zones and/or large melt inclusions. Orthopyroxene phenocrysts are 1.0-0.1 mm and some have clinopyroxene rims. Clinopyroxene phenocrysts are 2.75-0.05 mm and twinning is common. Olivine? phenocrysts are present.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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