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SAMPLE INFO : 91CND30

Sample ID:	91CND30
Station ID:	91CND30
Latitude:	58.82
Longitude:	-153.636
Datum:	NAD83
Date Sampled:	1991-01-01
Sample Type 1:	Lava
Sample Type 2:	Ice Contact

Text Description:
Sample of glaciated ice-contact lava 7 km southwest of Douglas and 6 km north northeast of Fourpeaked along the ridge connecting the two. The outcrop is about 2.5 km long and 1 km wide, from 3600 to 5000 feet in elevation, and surrounded by ice. Lava consists of fanning and contorted, often sub-horizontal columns 10 cm in diameter. Porphyritic two-pyroxene andesite. Phenocrysts of plagioclase (30%, up to 1.6 x 0.9 mm), pyroxene (20%, up to 1.1 x 0.5 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites.

References:

Geochemistry of some Quaternary lavas from the Aleutian Arc and Mt. Wrangell

GEOCHEM DATA

StationID	Latitude	Longitude	Geologist	DateVisited	Age Info	Volcano	Eruption	Location Description	Text Description	Sample ID	Sample Type 1	Sample Type 2	Final Unit	Material	SiO2	TiO2	Al2O3	FeOT	MnO	MgO	CaO	Na2O	K2O	P2O5	Total-majors	REF majors	METH majors	Fe2O3/Fe203T orig	FeO/FeOT orig	Volatiles csv	METH volatiles	Cs	Rb	Ba	Sr	La	Ce	Pr	Nd	Sm	Eu	Gd	Tb	Dy	Ho	Er	Tm	Yb	Lu	Y	Zr	Nb	Hf	Ta	Pb	Th	U	Sc	V	Cr	Fe	Co	Ni	Cu	Zn	Ga	Mo	As	Na	K	Ref trace1	METH trace1	Rb	Ba	Sr	La	Ce	Nd	Sm	Eu	Gd	Dy	Er	Yb	Lu	Y	Zr	Nb	Pb	Th	U	Sc	Ti	V	Cr	Ni	Cu	Zn	Ga	Ref trace2	METH trace2	Light csv	Halogen csv	other major csv	other lile csv	other ree csv	other hfse csv	other hpe csv	other tm csv	other misc csv
91CND30	58.82	-153.636	Nye, C. J.	1991-07-25		Douglas			Sample of glaciated ice-contact lava 7 km southwest of Douglas and 6 km north northeast of Fourpeaked along the ridge connecting the two. The outcrop is about 2.5 km long and 1 km wide, from 3600 to 5000 feet in elevation, and surrounded by ice. Lava consists of fanning and contorted, often sub-horizontal columns 10 cm in diameter. Porphyritic two-pyroxene andesite. Phenocrysts of plagioclase (30%, up to 1.6 x 0.9 mm), pyroxene (20%, up to 1.1 x 0.5 mm), and opaque Fe-Ti oxides in a matrix of devitrified glass and subordinate microphenocrysts and microlites.	91CND30	Lava			Whole-rock	62.18	0.676	16.57		0.106	3.53	6.36	3.64	1.408	0.103	100.83	13291	XRF		5.42			0.92813	40	392	275	10	14	2.87084	12.82519	3.47423	0.90564	3.90788	0.68249	4.36459	0.93132	2.56146	0.39216	2.53015	0.4058	24	130	2	3.69074	0.14945	4	1	1.63864	20	163	41			20	42	59	15					13291	ICPMS: Cs, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, U; XRF: Rb, Ba, Sr, La, Ce, Y, Zr, Nb, Pb, Th, Sc, V, Cr, Ni, Cu, Zn, Ga;

SAMPLE LOCATION

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