Sample: 94SJP81C

Sample ID:	94SJP81C ^[1]
Station ID:	94SJP81C
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:	Platy to locally massive flows adjacent to vent breccia and a dike (94SJP81B). Fine-grained, holocrystalline, pilotaxitic, intergranular, porphyritic with a matrix of plagioclase, opaque, orthopyroxene and calcite. Plagioclase phenocrysts (An 38 - An62) are up to 2 mm and have multiple sieve textured intermediate zones, complex zoning, and a few have resorbed rims. Orthopyroxene phenocrysts are up to 1.75 mm. Clinopyroxene phenocrysts are up to 1 mm. Olivine phenocrysts are up to 0.7 mm, most are ~0.1 mm, and altering to iddingsite with fine-grained pyroxene ± opaque coronas. Opaque phenocrysts are up to 0.2 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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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