kamen_10

Кому надо, тот поймет...


Aug 8, 2012 Chakraborty, SubrataToMe Aug 9, 2012

Dear Sergei,

Here is the result of oxygen isotope analysis. The oxygen isotopic composition of this rock is identical to terrestrial rock (cap-delta values are close to zero, see the table below). Which says that the proportion of 16, 17 and 18 oxygen are in the same proportion that of Earth rocks. However, that does not tell that this rock is no meteorite. I was studying the major element data you send me and all those numbers fall close to some rare-achondrites. I am still in the process to identify the achondrite, which matches with this rock. What is you plan with rock, I mean to say what you plan to do with these data.

Any thoughts are welcome.

Thanks,

-subrata

SpotYield (µmol)δ17Oσδ17Oδ18Oσδ18OΔ17OσΔ17O                #116.73.050± 0.0576.107± 0.026-0.12± 0.059#240.33.45± 0.0296.63± 0.0350.002± 0.034#315.33.264± 0.0676.457± 0.044-0.09± 0.071        Mean 3.255± 0.2006.398± 0.2660.07± 0.064

Subrata Chakraborty, Ph.D.
University of California, San Diego
Dept of Chemistry (Urey hall 5112)
9500 Gilman Dr. # 0356
La Jolla, California 92093-0356
Phone: 858-534-6053 (Off)
 858-336-5162 (Cell)
Fax:   858-534-7042
Email: subrata@ucsd.edu
URL: http://isotopes.ucsd.edu/~subrata

Минерал        wt%
Ca/Na-плагиоглаз    49,4
Роговая обманка    37,5
Магнетит        5.3
Биотит            1,9
К-полевой шпат    2.3
Кварц            3.7

Компонент        wt%
Na2O            3,53
MgO            3,2
Al2O3            15,96
SiO2            49,67
P2O5            0,5
K2O            0,65
CaO            8,38
TiO2            2,71
MnO            0,24
Fe2O3            15,06
LOI            0,02
Сумма            99,93 


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