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SAMPLE INFO : 94SJP21

Sample ID:	94SJP21
Station ID:	94SJP21
Latitude:	62.2818358
Longitude:	-143.2487934
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Flow
Field Lithology:	Andesite

Text Description:
Approximately 25’ thick,, plagioclase-phyric flow at Site 12. Fine grained, vesicular, hypocrystalline, intersertal, weakly intergranular, seriate to glomeroporphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and orthopyroxene. Plagioclase phenocrysts (An38 - An58) are up to 7.75 mm and often have sieve textured rims, pyroxene inclusions and complex zoning. Orthopyroxene phenocrysts are up to 2.0 mm and some have clinopyroxene rims (mainly on smaller grains); there are occasional sieve textured rims. Clinopyroxene phenocrysts are up to 0.7 mm and the largest grains have orthopyroxene cores. Olivine? phenocrysts are surrounded by small orthopyroxene crystals. 63.1% matrix, 26.7% plagioclase, 0.2% orthopyroxene, 5.7% altered phase, 0.2% alteration.

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
94SJP21	62.2818358	-143.2487934	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T6N, R12E, S19	Approximately 25’ thick,, plagioclase-phyric flow at Site 12. Fine grained, vesicular, hypocrystalline, intersertal, weakly intergranular, seriate to glomeroporphyritic with a matrix of brown glass, opaque, plagioclase, clinopyroxene and orthopyroxene. Plagioclase phenocrysts (An38 - An58) are up to 7.75 mm and often have sieve textured rims, pyroxene inclusions and complex zoning. Orthopyroxene phenocrysts are up to 2.0 mm and some have clinopyroxene rims (mainly on smaller grains); there are occasional sieve textured rims. Clinopyroxene phenocrysts are up to 0.7 mm and the largest grains have orthopyroxene cores. Olivine? phenocrysts are surrounded by small orthopyroxene crystals. 63.1% matrix, 26.7% plagioclase, 0.2% orthopyroxene, 5.7% altered phase, 0.2% alteration.	94SJP21	Lava			Whole-rock	58.4	0.83	17.7	5.83	0.1	4.35	7.3	3.9	1.26	0.15	99.68	55	DCP	6.41	5.83	LOI=0.27	DCP		25.1	473	524	14.6	34.2		15.7	3.5	1.1	3.9		3.3		1.9		1.8	0.3	20	139	5				4.4	1.1	19.5	155	59			65	59	59	17.9					55	XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, La, Ce, Nd, Sm, Eu, Gd, Dy, Er, Yb, Lu, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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