Figure 7

Carbonate reservoir observed by optical microscopy under (a,b,d) polarized and analysed light, (c) reflected and non-analysed light and (d) reflected and analysed light. (a) micro dolomite, (b) rhombohedral dolomite, (c,d) fracture with sulphide, calcite, and antigorite, (e,f) samples with alizarin coloration under unanalysed natural light.