Composition of Plutonic Rocks, Soils, and Breccias

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Home → Samples for Education → Petrographic Thin Section Program → Study Guide → Composition of Plutonic Rocks, Soils, and Breccias
Lunar Petrographic Thin Section Set Study Guide

Table 6 - Composition of Plutonic Rocks, Soils, and Breccias

Plutonic Rocks Soils Breccias
60025 78235 68501 70181 14305 15299 72275

Note: Composition of Mare Basalts are given in table 4 and figure 11.
SiO2 43.9 49.8 45.2 40.9 49.2 46.4 48.3
TiO2 .02 .19 .58 8.1 1.7 1.5 1.0
Al2O3 35.2 17.1 26.6 12.3 16.0 16.3 16.3
FeO .67 7.5 5.5 16.4 9.5 12.0 11.0
MnO .03 .12 .07 .24 .18 .15 .17
MgO .27 15.0 6.3 9.8 12.0 11.1 10.3
CaO 18.9 9.9 15.3 11.0 7.4 11.8 11.0
Na2O .49 .35 .47 .35 .85 .49 .44
K2O .03 .06 .11 .08 1.2 .20 .25
Cr2O3 .04 .35   .44 .17 .34 .35
Total 99.55 100.37 100.13 99.61 99.1 100.28 100.01