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Sample T102

NavDat sample number 6897 · LATITE

Sample

Sample IDT102
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 or pilotaxitic texture, interstitial quartz

Location

Latitude44.3529
Longitude-104.068
LocationBlack Hills
State / provinceWyoming
Volcanic fieldTinton District

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
48 38 59

Analyses

Whole rock

ItemValueStd. dev.UnitMethod
SIO262.46WT%EPMA
AL2O317.83WT%EPMA
FE2O32.15WT%EPMA
FEO2.81WT%EPMA
MGO2.42WT%EPMA
CAO3.49WT%EPMA
NA2O4.99WT%EPMA
K2O2.8WT%EPMA
TIO20.64WT%EPMA
P2O50.32WT%EPMA
MNO0.09WT%EPMA
SO30WT%EPMA

References