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Supplemental table for October, 2006 PSRD article, LIBS: Remote Chemical Analysis.

For each Martian meteorite Dag 476 and Zagami and the andesite powder standard JA-2: there are three columns showing a LIBS average composition, the average of several published chemical analyses, and the percent difference between these two. The rows indicate the major oxides analyzed. In general, the LIBS results were within 10% of the oxide compositions reported in the literature.

  DaG 476 Zagami JA-2 Andesite
Oxide LIBS Avg. Literature % Difference LIBS Avg. Literature % Difference LIBS Avg. Literature % Difference
SiO2 49.63 47.46 4.6 52.92 50.86 4.0 54.82 56.18 2.5
FeO 15.16 16.58 8.6 17.11 17.88 4.3 (Fe2O3T) 6.22 6.14 1.2
CaO 6.31 7.11 11.2 9.91 10.39 4.6 6.69 6.48 3.3
MgO 18.74 19.84 5.5 10.83 11.24 3.6 7.86 7.68 2.4
Al2O3 5.03 4.28 17.5 5.56 5.96 6.8 14.62 15.32 4.6
Na2O 0.66 0.55 19.8 0.68 0.9 24.1 4.61 3.08 39.7
TiO2* 0.66 0.37 79.4 1.02 0.79 28.5 0.73 0.67 8.3
* Thompson, Wiens, and colleagues note that the TiO2 signal is currently near the detection limit.

Reference:

RETURN to PSRD article, "LIBS: Remote Chemical Analysis."