Sample ID: CR-24
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: 27.35
Min Age: 27.25
Max Age: 27.45
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 ZN ZR BA HF ND RB SB SR TA TH U
1988-011206 XRF WHOLE ROCK 74.87 0.1760985 13.362768 1.2948419 0.21753344 0.7251115 2.9108045 6.298111 0.051793676 0 3.46                                                
2003-024679 INAA WHOLE ROCK                       53.3 100 6.76 0.74 5.71 0.786 0.516 2.96 0.465 3.83 0.48 0.505 6.32 43.5 143 250 5.6 38 164 0.486 -75 1.58 20.5 6.78


Total Alkali vs Silica


Element Normalization
  Th
Eu
Lu
Nd
Ni
Rb
Sb
Sc
Sm
Ta
Tb
Zr
U
Ce
Cr
Ba
La
Sr
Hf
Tm
Yb
Co
Zn
SAMPLE VALUE 20.5 0.74 0.465 38 6.32 164 0.486 3.83 6.76 1.58 0.786 143 6.78 100 0.48 250 53.3 75 5.6 0.516 2.96 0.505 43.5
  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 79.5 154 67.5 1250 1960 0.6 5.5 16.2 406 37 99 10.5 20.3 1675 2625 6600 648 19.9 283 68 441 105 55
  PPB  PPB  PPB  PPB  PPB  PPM  PPB  PPM  PPB  PPB  PPB  PPM  PPB  PPB  PPB  PPB  PPB  PPM  PPB  PPB  PPB  PPM  PPM