NATIVE GOLD AND SILVER, SULPHIDES AND REE MINERALS IN CARBONATITES FROM LOOLEKOP DEPOSIT (SOUTHERN AFRICA)

摘要

Thin-sections and a special concentrate of minerals of banded and transgressive carbonatites were studied with trivial methods of ore microscopy and by scanning microprobe analysis. Figures of chemical composition are reported for 38 minerals. Among them, there are data for native gold, silver, electrum, Cu suphides (chalcopyrite, cubanite, bornite, chalcocite), pyrrhotite, Co-Ni suphides (pentlandite, argentopentlandite, cobalt pentlandite), Bi suphides (parkerite, wittichenite), Ag telluride (hessite), sphalerite, galena, molybdenite, valleriite, and also for thrianite, ilmenite, magnetite, baddeleyite, Ti-REE mineral, and non-opaque minerals (monazite, apatite, bastnaesite, strontianite) and so on.