Sample: 09KCNYE010


Sample ID: 09KCNYE010 [1]
Station ID: 09KCNYE010
AT Num:
Volcano: Kasatochi
Possible source:
Eruption:
Collector: Nye, C. J.
Date sampled: 2009-01-01
Sample type 1:
Color:
Final unit:
Text Description: Hand sample; >20g. Lava unit stratigraphically above masive hb dacite (nye007) -- next unit above and to N. Ol, cpx, pl BA. Equant conchoidal frac boulders to 2 m in band across hillside. Medium gray (45%k overall, salt & pepper) cpx > plag basalt. Cpx ~2mm equant. plag 1.5x0.5mm laths and plates - plag enough small that it may be all coarse microphenocrysts or v coarse gms. Equigranular and holocrystalline (?) (i.e. identifiable groundmass not seen in hand specimen). A few% vugs lined by small white xls. Rare amphibole single xls to 10xs15mm (w/ cpx rims and inclusions of plag, cpx).
Sample Location:

References Cited

[1] 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