Sample ID: SJ-85-58
Georef Number: 2004-049375
Reference Title: Chemical analyses of Tertiary volcanic rocks, central San Juan Caldera complex, southwestern Colorado.
Reference Author: Lipman-Peter-W

Location

Sample Detail


Major Data? YES
Trace Data? YES
Isotope Data? NO 		Age: 26.6
Min Age: 26.1
Max Age: 27
Geological Age: OLIGOCENE
Age Method: REG-COR

Material: IGNEOUS
Type: VOLCANIC
Composition: FELSIC
Rock Name: RHYOLITE



Rock Data
Reference Technique Material SIO2 TIO2 AL2O3 FE2O3 MGO CAO NA2O K2O P2O5 MNO LOI CU ZN ZR NB PB RB SR Y
1988-011206 XRF WHOLE ROCK 71.08 0.2958995 15.080672 1.6937697 0.5101716 1.3570564 3.663032 5.5200567 0.06122059 0.051017158 1.98                
2003-024675 XRF WHOLE ROCK                       20 40 213 21 41 174 270 29


Total Alkali vs Silica


Element Normalization
  Cu
Nb
Pb
Rb
Zr
Sr
Y
Zn
SAMPLE VALUE 20 21 41 174 213 270 29 40
  PPM PPM PPM PPM PPM PPM PPM PPM
REF STANDARD 30 658 150 0.6 10.5 19.9 4.3 55
  PPM  PPB  PPB  PPM  PPM  PPM  PPM  PPM