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Sample 051V

NavDat sample number 11336 · DACITE

Sample

Sample ID051V
Rock nameDACITE
Rock typeVOLCANIC
CompositionFELSIC
MaterialIGNEOUS
Commentvein; coarsely porphyritic; matrix is holocrystralline and uniform in grain size, composed of plagioclase, alkali feldspar, quartz; quartz-lined and -filled vesicles present; phenocrysts of plagioclase, amphibole, corroded alkali feldspar, and minor magnetite, biotite, and quartz

Location

Latitude42.7783
Longitude-107.271
LocationRattlesnake Hills
State / provinceWyoming
Volcanic fieldNE dacite group

Age

Age (Ma)ErrorMinMaxGeologic ageDated by
43.6 41.4 46.6

Analyses

Whole rock

ItemValueStd. dev.UnitMethod
SIO273.81WT%XRF
AL2O313.68WT%XRF
FE2O31.73WT%XRF
FEO0.45WT%TIT
CAO1.99WT%XRF
MGO0.41WT%XRF
NA2O4.13WT%XRF
K2O2.86WT%XRF
TIO20.25WT%XRF
MNO0.03WT%XRF
P2O50.13WT%XRF
H2O1.39WT%PENFIELD
TOTAL100.86WT%XRF
RB81PPMXRF
SR1287PPMXRF
Y24PPMXRF
ZR305PPMXRF
LA29PPMXRF

References