Sample: 93SJP32

Sample ID:	93SJP32 ^[1]
Station ID:	93SJP32
AT Num:
Volcano:	Skookum Creek
Possible source:
Eruption:
Collector:	Preece, S. J.
Date sampled:	1993-00-00
Sample type 1:	Lava
Color:
Final unit:
Text Description:	Subvertical dike , about 1 m thick, trending N32E cutting through silicic material of Dome A at Site 2. The dike is cross-cut by dike 93SJP31. Fine-grained, seriate, intersertal, hypocrystalline with a matrix of brown glass, opaque, plagioclase microlites, clinopyroxene and yellow alteration. Plagioclase phenocrysts (An30-An58) are 1.6 - 0.05 mm, and some larger grains have complex zoning, sieve textured intermediate zones; most grains have little zoning. Orthopyroxene phenocrysts are 1.0 - 0.05 mm and have poorly developed clinopyroxene rims. Clinopyroxene phenocrysts are 0.8 - 0.05 mm, and twinning is common. Olivine phenocrysts are 0.9-0.1 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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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