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SAMPLE INFO : 94SJP114

Sample ID:	94SJP114
Station ID:	94SJP114
Latitude:	62.26099246
Longitude:	-143.4282415
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Field Lithology:	Dacite

Text Description:
Blocky and platy outcrop of silicic material that appears to have a vertical contact with andesite to the west on the west side of Sheep Lake. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material, plagioclase and opaque. Plagioclase phenocrysts are up to 1.0 mm and most grains are small laths; larger grains occasionally display oscillatory zoning and/or sieve textured zones. There is a dehydrated phase, amphibole?, that now consists of fine masses of opaque. Orthopyroxene phenocrysts up to 0.75 mm. Opaque phenocrysts up to 0.45 mm. 91.2% matrix, 8.5% plagioclase, 0.2% opaque, 0.1% altered phase.

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
94SJP114	62.26099246	-143.4282415	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T6N, R11E, S32	Blocky and platy outcrop of silicic material that appears to have a vertical contact with andesite to the west on the west side of Sheep Lake. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material, plagioclase and opaque. Plagioclase phenocrysts are up to 1.0 mm and most grains are small laths; larger grains occasionally display oscillatory zoning and/or sieve textured zones. There is a dehydrated phase, amphibole?, that now consists of fine masses of opaque. Orthopyroxene phenocrysts up to 0.75 mm. Opaque phenocrysts up to 0.45 mm. 91.2% matrix, 8.5% plagioclase, 0.2% opaque, 0.1% altered phase.	94SJP114	Lava			Whole-rock	69.06	0.34	16.99	2.58	0.11	0.74	2.74	5.39	1.98	0.09	99.8	55	DCP	2.86	2.58	LOI=-0.02	DCP		36	748	402	24.1	49.4		19.7	3.1	1.1	2.9		2.6		1.6		1.7	0.3	17	281	8.9				5.1	1.9	3	9	bdl			bdl	3	57	16.1					55	XRF: Rb, Zr, Nb, Th, U, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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