Sample: 94SJP105A

Sample ID:	94SJP105A ^[1]
Station ID:	94SJP105A
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:	Dike cutting through vent scoria of a small cinder cone. Dike is light gray, sheeted, strikes N25E, dips 70N, and is 4-5' thick. Fine grained, holocrystalline, trachytic, oxidized with a matrix of opaque, alteration, plagioclase, and clinopyroxene?. Plagioclase phenocrysts (An47) are up to 0.75 mm, and mostly occur as small laths; larger grains may have oscillatory zoning. Opaque phenocrysts are up to 0.2 mm. Clinopyroxene phenocrysts are up to 0.3 mm and oxidized.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.