AVO Sample Information

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SAMPLE INFO : 94SJP45

Sample ID:	94SJP45
Station ID:	94SJP45
Latitude:	62.44768316
Longitude:	-143.1474143
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Dike
Field Lithology:	Dacite

Text Description:
A very platy dike trending N70°E at Site 5. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, plagioclase and alteration. A 3.5 mm crystal clot of plagioclase, clinopyroxene and opaque is present. The lack of melting along the edge of the clot suggests that it is cognate. Plagioclase phenocrysts (An45 - An58) are up to 3.0 mm and often are rounded with both oscillatory and normal zoning and occasionally with resorption embayments. Orthopyroxene phenocrysts are up to 1.95 mm, intensely pleochroic and some have clinopyroxene rims and/or opaque inclusions. Clinopyroxene phenocrysts are up to 0.9 mm. Opaque phenocrysts are up to 0.3 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
94SJP45	62.44768316	-143.1474143	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T8N, R12E, S26	A very platy dike trending N70°E at Site 5. Fine grained, holocrystalline, porphyritic with a matrix of cryptocrystalline material, opaque, plagioclase and alteration. A 3.5 mm crystal clot of plagioclase, clinopyroxene and opaque is present. The lack of melting along the edge of the clot suggests that it is cognate. Plagioclase phenocrysts (An45 - An58) are up to 3.0 mm and often are rounded with both oscillatory and normal zoning and occasionally with resorption embayments. Orthopyroxene phenocrysts are up to 1.95 mm, intensely pleochroic and some have clinopyroxene rims and/or opaque inclusions. Clinopyroxene phenocrysts are up to 0.9 mm. Opaque phenocrysts are up to 0.3 mm.	94SJP45	Lava			Whole-rock	64.27	0.94	16.59	5.13	0.08	1.69	4.3	4.77	1.75	0.23	100.35	55	DCP	5.69	5.13	LOI=0.23	DCP		31	600	411															25	208	6.5				3.4	2.4	11.6	129	7			8	15	68	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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