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Sample T111

NavDat sample number 6902 · LATITE

Sample

Sample IDT111
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

Latitude44.3627
Longitude-104.057
LocationBlack Hills
State / provinceWyoming
Volcanic fieldTinton District

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
48 38 59

Analyses

Whole rock

ItemValueStd. dev.UnitMethod
SIO263.7WT%EPMA
AL2O317.98WT%EPMA
FE2O32.18WT%EPMA
FEO1.34WT%EPMA
MGO1.09WT%EPMA
CAO2.76WT%EPMA
NA2O6.25WT%EPMA
K2O3.66WT%EPMA
TIO20.68WT%EPMA
P2O50.21WT%EPMA
MNO0.08WT%EPMA
SO30.06WT%EPMA

References