Sample: 94SJP25

Sample ID:	94SJP25 ^[1]
Station ID:	94SJP25
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:	A 4’ thick, locally platy dike, trending N30°E that intrudes silicic material from Dome A at Site 5. Fine-grained, hypocrystalline, intersertal, intergranular, seriate to glomeroporphyritic with a matrix of pale brown glass, mesostasis, opaque, plagioclase, clinopyroxene, orthopyroxene and yellow alteration. Plagioclase phenocrysts (An19 - An46, most An34 - An46) are up to 2.5 mm and some have strong complex zoning with prussian blue extinction; a few have convolute zoning and/or resorption embayments. Orthopyroxene phenocrysts are up to 2.5 mm and some have altered melt inclusions, clinopyroxene rims and/or opaque inclusions.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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