Sample: 93SJP58

Sample ID:	93SJP58 ^[1]
Station ID:	93SJP58
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:	Platy flow within the spatter ridge at Site 4. Fine-grained, hypocrystalline, intersertal, porphyritic with a matrix of mesostasis, opaque, plagioclase and alteration. Plagioclase phenocrysts (An34 - An58) have two populations: most are 0.25-0.05 mm, euhedral to subhedral; less abundant are 0.65 - 0.35 mm, subhedral to anhedral grains, a few are sieve textured. Olivine phenocryst are up to 2.8 mm and a few have skeletal habits or opaque inclusions; at least one grain has grown around a rounded pyroxene core. One clinopyroxene phenocryst, 0.35 mm, was observed. Opaque phenocrysts are up to 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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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