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SAMPLE INFO : 94SJP66

Sample ID:	94SJP66
Station ID:	94SJP66
Latitude:	62.41629208
Longitude:	-143.158523
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Field Lithology:	Andesite

Text Description:
Outcrop of rubbly plates and blocks at Gutbuster. Fine grained, vesicular, holocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase and orthopyroxene?. Cognate inclusions of plagioclase (An41, An55), orthopyroxene with clinopyroxene rims, opaque and clinopyroxene are present. Plagioclase phenocrysts (An38 - An58) are up to 2.0 mm and some have sieve textured zones; there are resorbed grains with overgrowth rims; oscillatory zoning is common and normal zoning is common in smaller grains. Olivine phenocrysts are up to 1.25 mm and occasionally are rimmed with small orthopyroxene crystals. Orthopyroxene phenocrysts are up to 2.2 mm and clinopyroxene rims are common. Clinopyroxene phenocrysts are up to 1.25 mm. Opaque phenocrysts are up to 0.1 mm. 76.6% matrix, 16.3% plagioclase, 2.1% olivine, 1.5% clinopyroxene, 3.0% orthopyroxene, 0.5% vesicles.

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
94SJP66	62.41629208	-143.158523	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T7N, 12E, S3	Outcrop of rubbly plates and blocks at Gutbuster. Fine grained, vesicular, holocrystalline, seriate to glomeroporphyritic with a matrix of mesostasis, opaque, plagioclase and orthopyroxene?. Cognate inclusions of plagioclase (An41, An55), orthopyroxene with clinopyroxene rims, opaque and clinopyroxene are present. Plagioclase phenocrysts (An38 - An58) are up to 2.0 mm and some have sieve textured zones; there are resorbed grains with overgrowth rims; oscillatory zoning is common and normal zoning is common in smaller grains. Olivine phenocrysts are up to 1.25 mm and occasionally are rimmed with small orthopyroxene crystals. Orthopyroxene phenocrysts are up to 2.2 mm and clinopyroxene rims are common. Clinopyroxene phenocrysts are up to 1.25 mm. Opaque phenocrysts are up to 0.1 mm. 76.6% matrix, 16.3% plagioclase, 2.1% olivine, 1.5% clinopyroxene, 3.0% orthopyroxene, 0.5% vesicles.	94SJP66	Lava			Whole-rock	58.4	0.86	18.12	5.94	0.11	4.16	7.02	3.95	1.32	0.19	99.66	55	DCP	6.54	5.94	LOI=-0.08	DCP		21.3	446	590															16	110	3.5				1.3	2.3	17.9	158	52			55	53	62	18.5					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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