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SAMPLE INFO : 94SJP51A

Sample ID:	94SJP51A
Station ID:	94SJP51A
Latitude:	62.42379261
Longitude:	-143.1526903
Datum:	NAD83
Date Sampled:	1994-00-00
Sample Type 1:	Lava
Sample Type 2:	Dome
Field Lithology:	Dacite

Text Description:
Dome B at Site 5 that is surrounded by younger nA1 flows (94SJP51B). Fine grained, holocrystalline, seriate porphyritic with a matrix of cryptocrystalline material, opaque and plagioclase. Plagioclase phenocrysts (An36 - An52) are up to 1.75 mm and often have strong oscillatory zoning or normal zoning, and some have resorbed edges and occasional sieve textured zones. Amphibole phenocrysts are up to 1.05 mm with red-brown pleochroism and thick opaque and feldspar? rims; some grains are completely dehydrated. Opaque phenocrysts are mostly dehydrated amphibole, but primary opaque crystals are present up to 0.1 mm. 67.4% matrix, 24.3% plagioclase, 1.1% opaque, 4.7% altered amphibole, 0.1% alteration, 2.4% 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
94SJP51A	62.42379261	-143.1526903	Preece, S. J.	1994-00-00		Skookum Creek		Nabesna B-5; T8N, R12E, S34	Dome B at Site 5 that is surrounded by younger nA1 flows (94SJP51B). Fine grained, holocrystalline, seriate porphyritic with a matrix of cryptocrystalline material, opaque and plagioclase. Plagioclase phenocrysts (An36 - An52) are up to 1.75 mm and often have strong oscillatory zoning or normal zoning, and some have resorbed edges and occasional sieve textured zones. Amphibole phenocrysts are up to 1.05 mm with red-brown pleochroism and thick opaque and feldspar? rims; some grains are completely dehydrated. Opaque phenocrysts are mostly dehydrated amphibole, but primary opaque crystals are present up to 0.1 mm. 67.4% matrix, 24.3% plagioclase, 1.1% opaque, 4.7% altered amphibole, 0.1% alteration, 2.4% vesicles.	94SJP51A	Lava			Whole-rock	66.04	0.64	17	3.77	0.09	0.73	3.81	4.89	2.21	0.27	99.38	55	DCP	4.15	3.77	LOI=0.55	DCP		43	816	428															20	210	7.1				6.3	2.5	6.1	43	bdl			3	9	57	17.1					55	XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cu, Zn;

SAMPLE LOCATION

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