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SAMPLE INFO : 94SJP49B

Sample ID:	94SJP49B
Station ID:	94SJP49B
Latitude:	62.41684763
Longitude:	-143.1018573
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Dike
Field Lithology:	Andesite

Text Description:
A 5-6’ thick dike, trending N90°E, with columnar jointing. Along the edge of the dike there is vitrophyre that is probably remelted host material. Fine grained, hypocrystalline, intersertal, porphyritic with a matrix of brown glass, opaque, plagioclase, green alteration patches, clinopyroxene and calcite patches. Plagioclase phenocrysts (An32 - An64) are up to 2.25 mm and many have sieve textured cores with overgrowth rims, some have oscillatory zoning, and a few have resorption embayments. Olivine phenocrysts are up to 0.9 mm and most are altered leaving only a few olivine cores. Orthopyroxene phenocrysts are up to 0.5 mm and have clinopyroxene rims. Opaque phenocrysts are up to 0.1 mm.

References:

Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex

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
94SJP49B	62.41684763	-143.1018573	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T7N, R12E, S1	A 5-6’ thick dike, trending N90°E, with columnar jointing. Along the edge of the dike there is vitrophyre that is probably remelted host material. Fine grained, hypocrystalline, intersertal, porphyritic with a matrix of brown glass, opaque, plagioclase, green alteration patches, clinopyroxene and calcite patches. Plagioclase phenocrysts (An32 - An64) are up to 2.25 mm and many have sieve textured cores with overgrowth rims, some have oscillatory zoning, and a few have resorption embayments. Olivine phenocrysts are up to 0.9 mm and most are altered leaving only a few olivine cores. Orthopyroxene phenocrysts are up to 0.5 mm and have clinopyroxene rims. Opaque phenocrysts are up to 0.1 mm.	94SJP49B	Lava			Whole-rock	57.6	1.1	18.04	5.87	0.11	2.78	7.16	4.24	1.11	0.23	98.98	55	DCP	6.41	5.87	LOI=1.74	DCP		20	459	573															24	138	3.9				2.2	1.3	19.6	169	14			29	44	71	19.1					55	XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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