NGDB rock sample M139231

Field Value
Unique Sample ID Number M139231
Analytical Job Number KH57
Submitter Name Decker, John E.
Date Submitted 19790301
Field Number SIC7D312
State AK
Latitude 57.69028
Longitude -136.1333
Source of Sample outcrop
Collection Method single/grab
Primary Classification rock
Secondary Classification metamorphic
Specific Name metavolcanic
Additional Attributes and Comments not metasomatic; quartz absent; mafic (greenstone, greenschist, amphibolite);; volcanic;
Geologic Age or Range Mesozoic undifferentiated
Stratigraphic Unit Name SITKA GRAYWACKE
Type of Metamorphism regional
Metamorphic Facies or Grade greenschist
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Geologic map unit -136.1333, 57.69028
Nearby scientific data Find additional scientific data near this location
Element Measured value Units of measure Analytical method
LOI 1.27 percent by weight (unknown method)
Na2O 3.9 percent by weight XRF
MgO 3.09 percent by weight XRF
Al2O3 18.3 percent by weight XRF
SiO2 50.9 percent by weight XRF
P2O5 0.2 percent by weight XRF
K2O 0.5 percent by weight XRF
CaO 11.4 percent by weight XRF
TiO2 1.43 percent by weight XRF
Chromium 224.4 ppm by weight XRF
MnO 0.141 percent by weight XRF
FeTO3 9.78 percent Fe2O3 by weight XRF
Nickel 72 ppm by weight XRF
Strontium 1105 ppm by weight XRF
Yttrium 29 ppm by weight XRF
Zirconium 118.4 ppm by weight XRF
Barium 441 ppm by weight XRF