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Sample: 94SJP116

Sample ID: 94SJP116 [1]
Station ID: 94SJP116
AT Num:
Volcano: Tanada Peak
Possible source:
Eruption:
Collector: Preece, S. J.
Date sampled: 1994-00-00
Sample type 1: Lava
Color:
Final unit:
Text Description: Three to four foot diameter block/bomb on Tanada Cinder Cone at Site 15. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, olivine and pyroxene?. Plagioclase phenocrysts (An55) are up to 0.75 mm; most are small laths. Olivine phenocrysts are up to 0.75 mm, and occasionally have skeletal habits. May be some orthopyroxene? present. Mode: 78.2% matrix, 0.2% plagioclase, 1.3% olivine, 20.3% vesicles.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.