NGDB rock sample M172950

Field Value
Unique Sample ID Number M172950
Analytical Job Number LR17
Submitter Name Brew, David A.
Date Submitted 19860715
Field Number 86RN54
State AK
Latitude 58.30583
Longitude -134.33611
Source of Sample outcrop
Collection Method composite
Primary Classification rock
Secondary Classification metamorphic
Specific Name metamafite
Additional Attributes and Comments not metasomatic; quartz absent; mafic (greenstone, greenschist, amphibolite);; mafic sill, very fresh in appearance;
Geologic Age or Range Mesozoic undifferentiated
Stratigraphic Unit Name PERSERVERIENCE SLATE
Type of Metamorphism regional
Metamorphic Facies or Grade greenschist
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Geologic map unit -134.33611, 58.30583
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Element Measured value Units of measure Analytical method
Gold L0.1 ppm by weight AA (partial)