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SAMPLE INFO : 94SJP19

Sample ID:	94SJP19
Station ID:	94SJP19
Latitude:	62.29266982
Longitude:	-143.2590716
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Field Lithology:	Andesite

Text Description:
Not sure if this is a dike, sill or flow. At the top of Site 12. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene with clinopyroxene rims, olivine? and clinopyroxene. Plagioclase phenocrysts (An26 - An55) are up to 1.9 mm and the larger grains tend to have sieve textured zones and may be oscillatory zoned, while the smaller laths may have normal zoning. Olivine phenocrysts are up to 1.0 mm and some have skeletal habits, rims of small orthopyroxene crystals, or are partially altered. Orthopyroxene phenocrysts are up to 1.75 mm and some have clinopyroxene rims; a few have resorption embayments. Clinopyroxene 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
94SJP19	62.29266982	-143.2590716	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T6N, R12E, S19	Not sure if this is a dike, sill or flow. At the top of Site 12. Fine grained, vesicular, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase, orthopyroxene with clinopyroxene rims, olivine? and clinopyroxene. Plagioclase phenocrysts (An26 - An55) are up to 1.9 mm and the larger grains tend to have sieve textured zones and may be oscillatory zoned, while the smaller laths may have normal zoning. Olivine phenocrysts are up to 1.0 mm and some have skeletal habits, rims of small orthopyroxene crystals, or are partially altered. Orthopyroxene phenocrysts are up to 1.75 mm and some have clinopyroxene rims; a few have resorption embayments. Clinopyroxene phenocrysts are up to 0.1 mm.	94SJP19	Lava			Whole-rock	58.5	0.7	17.28	5.6	0.1	5.38	7.17	3.6	1.15	0.15	99.52	55	DCP	6.11	5.6	LOI=0.36	DCP		22.6	479	562															14	102	3.8				2	0.9	19.4	144	200			116	64	64	17.3					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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