NGDB rock sample M196592

Field Value
Unique Sample ID Number M196592
Analytical Job Number MJ38
Submitter Name Brew, David A.
Date Submitted 19910718
Field Number 91RN119C
State AK
Latitude 56.57278
Longitude -133.05
Source of Sample drill core
Collection Method composite
Primary Classification rock
Secondary Classification metamorphic
Specific Name metatuff
Additional Attributes and Comments metasomatism unknown; quartz present; feldspathic (granite gneiss, syenite gneiss, biotite gneiss);; alt'd tuff?;
Geologic Age or Range Devonian--Cretaceous
Alteration altrtn present
Metamorphic Facies or Grade greenschist
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Geologic map unit -133.05, 56.57278
Nearby scientific data Find additional scientific data near this location
Element Measured value Units of measure Analytical method
LOI 13.2 percent by weight (unknown method)
Na2O L0.15 percent by weight XRF
MgO 2.33 percent by weight XRF
Al2O3 16.9 percent by weight XRF
SiO2 45.4 percent by weight XRF
P2O5 0.32 percent by weight XRF
K2O 2.61 percent by weight XRF
CaO 1.11 percent by weight XRF
TiO2 1.26 percent by weight XRF
MnO 1.12 percent by weight XRF
FeTO3 14.8 percent Fe2O3 by weight XRF
Rubidium 44 ppm by weight XRF
Strontium 57 ppm by weight XRF
Yttrium 24 ppm by weight XRF
Zirconium 88 ppm by weight XRF
Niobium 13 ppm by weight XRF