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Sample: 91CND03

Sample ID: 91CND03 [1]
Station ID: 91CND03
AT Num:
Volcano: Douglas
Possible source:
Eruption:
Collector: Nye, C. J.
Date sampled: 1991-01-01
Sample type 1: Lava
Color:
Final unit:
Text Description: Sample from outcrop surrounded by snow @4360 ft elevation in divide between Douglas and Fourpeaked. Porphyritic two-pyroxene andesite. ~50% phenocrysts of plagioclase (up to 1.3 x 0.8 mm), pyroxene (up to 1.3 x 0.3 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites. Pl:px ~ 3:2
Sample Location:
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Uninstrumented

200 km
100 mi
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References Cited

[1] Geochemistry of some Quaternary lavas from the Aleutian Arc and Mt. Wrangell, 2018

Nye, C.J., Beget, J.E., Layer, P.W., Mangan, M.T., McConnell, V.S., McGimsey, R.G., Miller, T.P., Moore, R.B., and Stelling, P.L., 2018, Geochemistry of some quaternary lavas from the Aleutian Arc and Mt. Wrangell: Alaska Division of Geological & Geophysical Surveys Raw Data File 2018-1, 29 p. http://doi.org/10.14509/29843