Sample: 94SJP8B

Sample ID:	94SJP8B ^[1]
Station ID:	94SJP8B
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:	Plagioclase-phyric andesite float in the creek bed at Site 12. Fine grained, holocrystalline, seriate to glomeroporphyritic with a matrix of opaque, plagioclase, clinopyroxene, mesostasis and minor alteration. Plagioclase phenocrysts (An26 - An49) are up to 3.75 mm and frequently have sieve textured zones and are zoned; some have clinopyroxene inclusions. Orthopyroxene phenocrysts are up to 1.5 mm. Clinopyroxene phenocrysts are up to 0.7 mm. An altered phase is present.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137 and G23AC00070.

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.