AVO Sample Information

Alaska Volcano Observatory

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SAMPLE INFO : 73-Arh-23AL

Sample ID:	73-Arh-23AL
Station ID:	73-ARh-23
Latitude:	62.0632
Longitude:	-144.64438
Datum:	NAD83
Date Sampled:	1973-01-01
Sample Type 1:	Lava
Sample Type 2:	Dome
Field Lithology:	Rhyodacite

Text Description:
Rhyodacite dome of Snider Peak - remnant core of rhyodacite dome representing one of the latest stages of eruptive history of Mount Drum Volcano. Rocks of dome are light gray to light buff gray, have a sugary texture, and are locally vesicular. They contain sparse small (2 mm) phenocrysts of plagioclase, strongly oxidized hornblende, and rare hypersthene and augite in a vapor-phase crystallized groundmass of feldspars and minor hypersthene. Chemistry: sample 17 (73-ARh-23)

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
73-ARh-23	62.0632	-144.64438	Richter, D. H.	1973-00-00		Drum		Wrangell Volcanic Field, Gulkana A-2 quadrangle. Lat and long derived from paper map.	Rhyodacite dome of Snider Peak - remnant core of rhyodacite dome representing one of the latest stages of eruptive history of Mount Drum Volcano. Rocks of dome are light gray to light buff gray, have a sugary texture, and are locally vesicular. They contain sparse small (2 mm) phenocrysts of plagioclase, strongly oxidized hornblende, and rare hypersthene and augite in a vapor-phase crystallized groundmass of feldspars and minor hypersthene. Chemistry: sample 17 (73-ARh-23)	73-Arh-23AL	Lava			Whole-rock	57.69	1.11	17.09	6.36	0.12	4.2	7.9	3.86	0.9	0.14	98.92	55	DCP	6.95	6.36	LOI=0.63	DCP			386	551															17	95							20.1	173	78			38	137	63						55	DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn; XRF: Zr, Ni;

SAMPLE LOCATION

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