NGDB rock sample M196590

Field Value
Unique Sample ID Number M196590
Analytical Job Number MJ38
Submitter Name Brew, David A.
Date Submitted 19910718
Field Number 91RN118B
State AK
Latitude 56.57361
Longitude -133.05278
Source of Sample drill core
Collection Method composite
Primary Classification rock
Secondary Classification metamorphic
Specific Name metabasalt
Additional Attributes and Comments not metasomatic; quartz absent; mafic (greenstone, greenschist, amphibolite);; massive basalt;
Geologic Age or Range Devonian--Cretaceous
Alteration altrtn present
Metamorphic Facies or Grade greenschist
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Geologic map unit -133.05278, 56.57361
Nearby scientific data Find additional scientific data near this location
Element Measured value Units of measure Analytical method
LOI 4.76 percent by weight (unknown method)
Na2O 4.04 percent by weight XRF
MgO 7.18 percent by weight XRF
Al2O3 14.4 percent by weight XRF
SiO2 51.1 percent by weight XRF
P2O5 0.09 percent by weight XRF
K2O 0.64 percent by weight XRF
CaO 7.54 percent by weight XRF
TiO2 0.49 percent by weight XRF
MnO 0.16 percent by weight XRF
FeTO3 9.38 percent Fe2O3 by weight XRF
Rubidium 15 ppm by weight XRF
Strontium 184 ppm by weight XRF
Yttrium 18 ppm by weight XRF
Zirconium 52 ppm by weight XRF
Niobium L10 ppm by weight XRF