Sample ID: 90L-21
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: 27.71
Min Age: 27.62
Max Age: 27.8
Geological Age: OLIGOCENE
Age Method: REG-COR

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 LA CE SM EU GD TB HO TM YB LU SC CR CO NI CU ZN ZR BA CS HF NB ND RB SB SR TA TH U Y
1988-011206 XRF WHOLE ROCK 70.61 0.47546512 14.061628 3.6519768 0.687907 2.2053487 3.0854652 4.117326 0.22255814 0.060697675 1.14                                                          
2003-024675 XRF WHOLE ROCK                       -30 74                   -20   -10 12 37 154 820     15   112   365       20
2003-024679 INAA WHOLE ROCK                       42.4 78.6 5.64 1.16 4.96 0.621 0.838 0.346 2.13 0.309 5.28 3.51 6.07 7.2   46 176 745 9.23 4.4   30.9 106 2.63 385 1.11 11.7 3.48  


Total Alkali vs Silica


Element Normalization
  Th
Cs
Cu
Eu
Lu
Nb
Nd
Ni
Rb
Sb
Sc
Sm
Ta
Tb
Zr
U
Ce
Cr
Ba
La
Sr
Hf
Y
Tm
Ho
Yb
Co
Zn
SAMPLE VALUE 11.7 9.23 12 1.16 0.309 15 30.9 7.2 106 2.63 5.28 5.64 1.11 0.621 176 3.48 78.6 3.51 745 42.4 385 4.4 20 0.346 0.838 2.13 6.07 46
  PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM PPM
REF STANDARD 79.5 21 30 154 67.5 658 1250 1960 0.6 5.5 16.2 406 37 99 10.5 20.3 1675 2625 6600 648 19.9 283 4.3 68 149 441 105 55
  PPB  PPB  PPM  PPB  PPB  PPB  PPB  PPB  PPM  PPB  PPM  PPB  PPB  PPB  PPM  PPB  PPB  PPB  PPB  PPB  PPM  PPB  PPM  PPB  PPB  PPB  PPM  PPM