Sample: 94SJP107

Sample ID:	94SJP107 ^[1]
Station ID:	94SJP107
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:	Grab sample from platy rubble of a dome at the south end of Jaeger Mesa. Fine grained, holocrystalline, seriate porphyritic with a matrix of cryptocrystalline material, opaque, orthopyroxene and plagioclase. Plagioclase phenocrysts (An31 - An53) are up to 0.8 mm and tend to have strong normal zoning and occasional oscillatory zoning; the grains tend to include microlites. Opaque phenocrysts are up to 0.1 mm. Orthopyroxene phenocrysts are up to 0.25 mm. An opaque aggregate may represent an altered phase.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.