AVO Sample Information

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SAMPLE INFO : 94SJP10

Sample ID:	94SJP10
Station ID:	94SJP10
Latitude:	62.28378043
Longitude:	-143.2482379
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Dike
Field Lithology:	Dacite

Text Description:
A rubbly outcrop of silicic dike cutting through andesite at Site 12. Fine grained, holocrystalline, seriate porphyritic with a matrix of opaque, plagioclase, quartz?, cryptocrystalline material and minor alteration patches. Plagioclase phenocrysts (An28 - An47) are up to 1.75 mm and are commonly oscillatory zoned; the largest grains tend to be sieve textured. Orthopyroxene phenocrysts are up to 0.8 mm and strongly pleochroic; some have opaque inclusions. Amphibole phenocrysts are up to 0.8 mm with green-yellow pleochroism, and frequently include small opaque crystals along rim. Opaque phenocrysts are up to 0.3 mm. 62.0% matrix, 29.6% plagioclase, 2.8% orthopyroxene, 0.7% opaque, 0.3% amphibole, 4.6% 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
94SJP10	62.28378043	-143.2482379	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T6N, T12E, S19	A rubbly outcrop of silicic dike cutting through andesite at Site 12. Fine grained, holocrystalline, seriate porphyritic with a matrix of opaque, plagioclase, quartz?, cryptocrystalline material and minor alteration patches. Plagioclase phenocrysts (An28 - An47) are up to 1.75 mm and are commonly oscillatory zoned; the largest grains tend to be sieve textured. Orthopyroxene phenocrysts are up to 0.8 mm and strongly pleochroic; some have opaque inclusions. Amphibole phenocrysts are up to 0.8 mm with green-yellow pleochroism, and frequently include small opaque crystals along rim. Opaque phenocrysts are up to 0.3 mm. 62.0% matrix, 29.6% plagioclase, 2.8% orthopyroxene, 0.7% opaque, 0.3% amphibole, 4.6% vesicles.	94SJP10	Lava			Whole-rock	68.25	0.43	16.33	3.35	0.09	1.15	3.65	4.55	2	0.16	99.51	55	DCP	3.69	3.35	LOI=0.03	DCP		38	715	488															15	186	7				5.1	2	4.4	27	bdl			4	16	51	16					55	XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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