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Sample: 94SJP18

Sample ID: 94SJP18 [1]
Station ID: 94SJP18
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, 10-12' thick dike trending N70E that cuts through the brecciated material unit (unit sBA9) at Site 12. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, clinopyroxene and olivine?. Plagioclase phenocrysts (An32-An62) are up to 3.75 mm and often display strong oscillatory zoning, normal zoning is also observed, some sieve textured zones are present. Orthopyroxene phenocrysts are up to 2.0 mm and some have clinopyroxene rims. Olivine phenocrysts are up to 1.4 mm and some are altered. Clinopyroxene phenocrysts are up to 1.9 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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.