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Sample T141

NavDat sample number 6904 · LATITE

Sample

Sample IDT141
Rock nameLATITE
Rock typeVOLCANIC
CompositionINTERMEDIATE
MaterialIGNEOUS
Commentaphanitic holocrystalline groundmass with phenocrysts of plagioclase, hornblende, biotite, and rare aegirine-augite; groundmass composed of lath-shaped orthoclase arranged in trachytic texture, interstitial quartz; glomerophyric

Location

Latitude44.385
Longitude-104.05
LocationBlack Hills
State / provinceSouth Dakota
Volcanic fieldTinton District

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
48 38 59

Analyses

Whole rock

ItemValueStd. dev.UnitMethod
SIO268.9WT%EPMA
AL2O317.53WT%EPMA
FE2O31.94WT%EPMA
FEO0.14WT%EPMA
MGO0.3WT%EPMA
CAO1.98WT%EPMA
NA2O4.61WT%EPMA
K2O3.91WT%EPMA
TIO20.44WT%EPMA
P2O50.2WT%EPMA
MNO0WT%EPMA
SO30.04WT%EPMA

References