NGDB rock sample M178995

Field Value
Unique Sample ID Number M178995
Analytical Job Number LV56
Submitter Name Brew, David A.
Date Submitted 19870722
Field Number 87RN287B
State AK
Latitude 58.10083
Longitude -134.65583
Source of Sample drill core
Collection Method channel
Primary Classification rock
Secondary Classification metamorphic
Specific Name schist
Additional Attributes and Comments metasomatism unknown; quartz present; mafic (greenstone, greenschist, amphibolite);; qtz-dolomite-chl schist;
Geologic Age or Range Devonian--Triassic
Alteration altrtn present
Type of Metamorphism regional
Metamorphic Facies or Grade greenschist
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Geologic map unit -134.65583, 58.10083
Nearby scientific data Find additional scientific data near this location
Element Measured value Units of measure Analytical method
Na2O 2.3 percent by weight XRF
MgO 5.74 percent by weight XRF
Al2O3 16.1 percent by weight XRF
SiO2 47.9 percent by weight XRF
P2O5 0.5 percent by weight XRF
K2O 3.06 percent by weight XRF
CaO 3.01 percent by weight XRF
TiO2 1 percent by weight XRF
Chromium 32 ppm by weight XRF
MnO 0.52 percent by weight XRF
FeO 8.6 percent by weight Titration
FeTO3 11.9 percent Fe2O3 by weight XRF
Nickel L20 ppm by weight XRF
Rubidium 50 ppm by weight XRF
Strontium 270 ppm by weight XRF
Yttrium 30 ppm by weight XRF
Zirconium 92 ppm by weight XRF
Niobium 10 ppm by weight XRF