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SAMPLE INFO : 73-Arh-23AD
Sample ID:73-Arh-23AD
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
StationIDLatitudeLongitudeGeologistDateVisitedAge InfoVolcanoEruptionLocation DescriptionText DescriptionSample IDSample Type 1Sample Type 2Final UnitMaterialSiO2TiO2Al2O3FeOTMnOMgOCaONa2OK2OP2O5Total-majorsREF majorsMETH majorsFe2O3/Fe203T origFeO/FeOT origVolatiles csvMETH volatilesCsRbBaSrLaCePrNdSmEuGdTbDyHoErTmYbLuYZrNbHfTaPbThUScVCrFeCoNiCuZnGaMoAsNaKRef trace1METH trace1RbBaSrLaCeNdSmEuGdDyErYbLuYZrNbPbThUScTiVCrNiCuZnGaRef trace2METH trace2Light csvHalogen csvother major csvother lile csvother ree csvother hfse csvother hpe csvother tm csvother misc csv
73-ARh-2362.0632-144.64438Richter, D. H.1973-00-00 DrumWrangell 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-23ADLavaWhole-rock 56.3 1.26 16.93 6.99 0.13 4.7 8.37 3.75 0.75 0.17 99.1555DCP7.656.99LOI=0.63DCP 19.7 361 528 18 102 6.4 2.2 1 23.4 201 85 46 180 82 18 55XRF: Rb, Zr, Nb, Th, U, Ni, Ga; DCP: Ba, Sc, V; MX: Sr, Y, Cr, Cu, Zn;

SAMPLE LOCATION

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