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Sample T032

NavDat sample number 6899 · LATITE

Sample

Sample IDT032
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 pilotaxitic texture, interstitial quartz; glomerophyric

Location

Latitude44.3473
Longitude-104.032
LocationBlack Hills
State / provinceSouth Dakota
Volcanic fieldTinton District

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
48 38 59

Analyses

Whole rock

ItemValueStd. dev.UnitMethod
SIO263.21WT%EPMA
AL2O316.42WT%EPMA
FE2O32.11WT%EPMA
FEO3.18WT%EPMA
MGO0.66WT%EPMA
CAO5.37WT%EPMA
NA2O4.46WT%EPMA
K2O3.51WT%EPMA
TIO20.6WT%EPMA
P2O50.21WT%EPMA
MNO0.24WT%EPMA
SO30.02WT%EPMA

References