Sample: 94SJP29

Sample ID:	94SJP29 ^[1]
Station ID:	94SJP29
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:	Subvertical dike trending N20W and intruding into silicic material from Dome A at Site 2. Fine-grained, seriate, intergranular, altered, vesicular, holocrystalline with a matrix of mesostasis, opaque, feldspar, clinopyroxene, calcite alteration and other alteration. Plagioclase phenocrysts (An19-An56) are 1.3 - 0.05 mm; larger grains have sieve textured cores, complex zoning, embayments, and one grain has strongly poikilitic olivine or clinopyroxene. Orthopyroxene phenocrysts are 0.3 - 0.05 mm, subhedral, some have clinopyroxene rims and/or melt inclusions. Clinopyroxene phenocrysts are 0.55 - 0.5 mm. Olivine? phenocrysts are nearly completely altered.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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