NGDB rock sample W223187

Field Value
Unique Sample ID Number W223187
Analytical Job Number BK71
Submitter Name Brew, David A.
Date Submitted 19830913
Field Number 83EW020A
State AK
Latitude 58.29944
Longitude -134.33611
Source of Sample mine/quarry
Collection Method single/grab
Primary Classification rock
Secondary Classification metamorphic
Specific Name metagraywacke
Additional Attributes and Comments not metasomatic; quartz present; feldspathic (granite gneiss, syenite gneiss, biotite gneiss);; pyrite-graphite-quartz greywacke;
Geologic Age or Range Permian--Cretaceous
Type of Metamorphism contact
Metamorphic Facies or Grade greenschist
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Geologic map unit -134.33611, 58.29944
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Element Measured value Units of measure Analytical method
Na2O 3.36 percent by weight XRF
MgO 8.13 percent by weight XRF
Al2O3 16 percent by weight XRF
SiO2 44.4 percent by weight XRF
P2O5 0.43 percent by weight XRF
K2O 0.56 percent by weight XRF
CaO 6.39 percent by weight XRF
TiO2 1.78 percent by weight XRF
MnO 0.17 percent by weight XRF
FeO 8 percent by weight Titration
FeTO3 9.62 percent Fe2O3 by weight XRF