NGDB rock sample M172945

Field Value
Unique Sample ID Number M172945
Analytical Job Number LR17
Submitter Name Brew, David A.
Date Submitted 19860715
Field Number 86RN50A
State AK
Latitude 58.29778
Longitude -134.35556
Source of Sample outcrop
Collection Method composite
Primary Classification rock
Secondary Classification metamorphic
Specific Name greenschist
Additional Attributes and Comments not metasomatic; quartz absent; mafic (greenstone, greenschist, amphibolite);; andesitic(?) grnschist;
Geologic Age or Range Mesozoic undifferentiated
Stratigraphic Unit Name GASTANEAU VOLCS.
Type of Metamorphism regional
Metamorphic Facies or Grade greenschist
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Geologic map unit -134.35556, 58.29778
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Element Measured value Units of measure Analytical method
Gold L0.1 ppm by weight AA (partial)