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在马里Loulo测定了采自Birimian年代(2.1Ga)含金电气石化砂岩及其上下盘的硅酸盐、碳酸盐和硫化物样品中的氧、氢、碳、硫同位素组分,砂岩经受了两期构造形变。样品取自3个不同的矿体——Loulo 0,Loulo 3和P64。 Loulo 0矿体石英脉δ~(18)O值具有一致性,氧为16.1‰—16.6‰(SMOW)(一个样品为+11.6‰除外)。电气石化砂岩的碎屑石英颗粒的δ~(18)O值也是16.1‰。电气石具有高的δ~(18)O值(+13.9‰),全岩的δ~(18)O值也较均匀,为13.2‰—15.7‰,最低值(13.2‰和14‰)是取自下盘样品的δ~(18)O值。 Loulo 0和P64矿体的白云岩中氧的δ~(18)0值为15.1‰—19.5‰(SMOW),δ~(13)C值为—13.5‰—
Oxygen, hydrogen, carbon and sulfur isotope compositions of silicate, carbonate and sulfide samples taken from Birimian-era (2.1Ga) gold-containing electroplated sandstone and its upper and lower plates were measured at Lou Lou, Mali Two phases of structural deformation. Samples were taken from 3 different ore bodies - Loulo 0, Loulo 3 and P64. The δ 18 O value of the quartz vein of Loulo 0 ore body is consistent with oxygen of 16.1 ‰ -16.6 ‰ (SMOW) (except for one sample + 11.6 ‰). The δ 18 O value of the detrital quartz particles of the electrified petrochemical sandstone is also 16.1 ‰. Tourmaline has a high δ 18 O value of + 13.9 ‰ and a δ 18 O value of 13.2 ‰ -15.7 ‰ in the whole rock. The lowest value of 13 18 ‰ and 14 ‰ is also Δ ~ (18) O value from the bottom plate sample. Δ 18 O values of dolomite in Loulo 0 and P64 orebodies ranged from 15.1 ‰ to 19.5 ‰ (SMOW) and δ ~ (13) C values were -13.5 ‰ -