Sample: 94SJP14

Sample ID:	94SJP14 ^[1]
Station ID:	94SJP14
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:	Vertical sheeted dike trending N55°E cutting up through the brecciated unit (sBA9) at Site 12. Fine grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and clinopyroxene. Plagioclase phenocrysts (An30 - An57) are up to 1.7 mm and some have oscillatory zoning; normal zoning is more common. Orthopyroxene phenocrysts are up to 1.1 mm and commonly have clinopyroxene rims. Clinopyroxene phenocrysts are up to 0.08 mm. 57.8% matrix, 35.8% plagioclase, 6.3% orthopyroxene, 0.1% 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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

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