Sample ID: S236
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: 26.26
Min Age: 26.22
Max Age: 26.3
Geological Age: OLIGOCENE
Age Method: AR_AR

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



Rock Data
Reference Technique Material SIO2 TIO2 AL2O3 FE2O3 MGO CAO NA2O K2O P2O5 MNO LOI ZR NB RB SR Y
1988-011206 XRF WHOLE ROCK 64.85 0.67 15.85 4.6 1.79 3.91 4.09 3.6 0.28 0.09 1.65          
2003-024675 XRF WHOLE ROCK                       164 13 87 690 14


Total Alkali vs Silica


Element Normalization
  Nb
Rb
Zr
Sr
Y
SAMPLE VALUE 13 87 164 690 14
  PPM PPM PPM PPM PPM
REF STANDARD 658 0.6 10.5 19.9 4.3
  PPB  PPM  PPM  PPM  PPM