Sample ID: SD2-1064
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: 26.75
Min Age: 26
Max Age: 27.5
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 LA CE SM EU GD TB TM YB LU SC CR CO NI CU ZN ZR BA HF NB ND PB RB SB SR TA TH U Y
1988-011206 XRF WHOLE ROCK 70.73 0.32576105 14.83789 2.248802 0.5674547 1.8389736 3.719981 4.770823 0.08406737 0.08406737 4.8                                                        
2003-024675 XRF WHOLE ROCK                                               29 40 61 226     28   40 118   313       26
2003-024679 INAA WHOLE ROCK                       41.6 87 6.92 1.25 5.43 0.788 0.454 2.73 0.391 4.27 1.41 2.57 8.09   64.9 207 1070 6.61   35.9   117 0.264 304 1.38 11.5 4.3  


Total Alkali vs Silica


Element Normalization
  Th
Cu
Eu
Lu
Nb
Nd
Ni
Pb
Rb
Sb
Sc
Sm
Ta
Tb
Zr
U
Ce
Cr
Ba
La
Sr
Hf
Y
Tm
Yb
Co
Zn
SAMPLE VALUE 11.5 40 1.25 0.391 28 35.9 8.09 40 117 0.264 4.27 6.92 1.38 0.788 207 4.3 87 1.41 1070 41.6 304 6.61 26 0.454 2.73 2.57 64.9
  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 30 154 67.5 658 1250 1960 150 0.6 5.5 16.2 406 37 99 10.5 20.3 1675 2625 6600 648 19.9 283 4.3 68 441 105 55
  PPB  PPM  PPB  PPB  PPB  PPB  PPB  PPB  PPM  PPB  PPM  PPB  PPB  PPB  PPM  PPB  PPB  PPB  PPB  PPB  PPM  PPB  PPM  PPB  PPB  PPM  PPM