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Sample: 09KCNYE003M

Sample ID: 09KCNYE003M [1] [2]
Station ID: 09KCNYE003M
AT Num:
Volcano: Kasatochi
Possible source: Kasatochi
Eruption:
Collector: Nye, C. J.
Date sampled: 2009-06-12
Sample type 1:
Color:
Final unit:
Text Description: Matrix separate from 09KCNYE003. Coarse, equigranular cpx-hb-pl rock. This one sampled because it looks like it has gms/interstitial glass preserved. Question, is this interstitial melt the main-phase magma? Coarse-grained amph plag gabbro. Color index ~60, mean grain size ~3mm. But some amphibole crystals are crystallographically coherent for up to 3.cm - these are poikilitic. This specimen is unusual compared to others in this unit because it contains zones of disseminated intergranular melt from a few mm to 1 cm across. Melt is 60%k, finely vesicular and sparsely phyric. Sample 09KCnye300m is ~7g of handpicked intergranular magma from 472 g of coarse crushed material. This separate is about 90%melt and 10% crystal fragments.
Sample Location:

References Cited

[1] Petrologic and geochemical tracers of magmatic movement in volcanic arc systems: case studies from the Aleutian Islands and Kamchatka, Russia, 2013

Neill, O.K., 2013, Petrologic and geochemical tracers of magmatic movement in volcanic arc systems: case studies from the Aleutian Islands and Kamchatka, Russia: University of Alaska Fairbanks Ph.D., 188 p.

[2] Geology of Kasatochi volcano, Aleutian Islands, Alaska, 2017

Nye, C.J., Scott, W.E., Neill, O.K., Waythomas, C.F., Cameron, C.E., and Calvert, A.T., 2017, Geology of Kasatochi volcano, Aleutian Islands, Alaska: Alaska Division of Geological & Geophysical Surveys Professional Report 123, 127 p., 1 sheet, scale 1:5000. http://doi.org/10.14509/29718