AGDB2 rock sample M193438

(igneous, rhyolite porphyry)

Field Value
Lab ID M193438
Field ID 90RN166D
Job ID MF98
Sample submitter Brew, David A.
Project name Greater Juneau Geologic Investigations
Date submitted 8/24/1990 0:00:00
Country United States
State AK
Map quadrangle Petersburg
Geographic latitude 56.51722
Geographic longitude -132.06361
Sample source drill core
Collection method grab/single
Primary media type rock
Secondary media type igneous
Sample media name rhyolite porphyry
Sample comment porphyritic rhyolite
Geologic age Miocene
Stratigraphic unit Groundhog Basin RY
Igneous setting dike/sill
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Geologic map unit -132.06361, 56.51722
Nearby scientific data Find additional scientific data near this location
Element Measured value Units of measure Analytical method
Chromium 480 parts per million by weight WDX_Fuse
Rubidium 620 parts per million by weight EDX
Strontium <10 parts per million by weight EDX
Yttrium 255 parts per million by weight EDX
Zirconium 118 parts per million by weight EDX
Niobium 74 parts per million by weight EDX
Molybdenum <20 parts per million by weight EDX
Tin 33 parts per million by weight EDX
Barium <30 parts per million by weight EDX
Lanthanum 34 parts per million by weight EDX
Cerium 76 parts per million by weight EDX
Element Value Units Technique Digestion Decomposition Laboratory
Fluorine 0.76 pct ISE T LiBO2 or Na2CO3 fusion USGS-BGC
Sulfur <0.02 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Sulfur <0.02 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Chlorine 0.009 pct ISE T HF-KMnO4-H2SO4 USGS-BGC
Chromium 480 ppm XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Rubidium 620 ppm XRF T EDXRF USGS-BGC
Strontium L10 ppm XRF T EDXRF USGS-BGC
Yttrium 255 ppm XRF T EDXRF USGS-BGC
Zirconium 118 ppm XRF T EDXRF USGS-BGC
Niobium 74 ppm XRF T EDXRF USGS-BGC
Molybdenum L20 ppm XRF T EDXRF USGS-BGC
Tin 33 ppm XRF T EDXRF USGS-BGC
Barium L30 ppm XRF T EDXRF USGS-BGC
Lanthanum 34 ppm XRF T EDXRF USGS-BGC
Cerium 76 ppm XRF T EDXRF USGS-BGC
Al2O3 13.3 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
CaO 0.48 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
FeO 1.03 pct TT T HF-H2SO4 USGS-BGC
FeTO3 1.27 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
K2O 4.64 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
LOI 0.25 pct GV T combustion USGS-BGC
MgO L0.1 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
MnO L0.02 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
Na2O 4.09 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
P2O5 L0.05 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
SiO2 74.6 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC
TiO2 L0.02 pct XRF T LiBO2-Li2B4O7 fusion USGS-BGC