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Table 6

Bulk-rock analyses by Monchoux (1972a): 1, 2, 3: sapphirine-bearing rocks devoid of calcite, found at an increasing distance from the Lherz body; 4, 5: sapphirine-bearing rocks with calcite. Loi: loss on ignition.

  1 2 3 4 5
SiO2 45.30 42.70 37.90 23.00 23.60
AI2O3 15.30 16.30 19.10 9.40 11.10
Fe2O3 5.90 6.00 7.90 3.50 6.80
MgO 22.30 24.60 17.20 14.60 13.00
CaO 1.40 3.20 10.70 23.90 20.80
Na2O 0.80 0.30 1.30 0.80 0.10
K2O 0.08 0.10 0.80 0.04 0.00
CO2 19.00 15.70
Loi 9.20 6.60 4.40 5.30 8.90






Total 100.28 99.80 99.30 99.54 100.00

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