This paper presents experimental data on etching plane-faced octahedral diamond crystals in the system silicate melt-C-O-H-S fluid at 3 GPa and 1300°C. It was established that the curved-surface crystals of octahedroid ...
The most typical features on the octahedral faces and rhombic dodecahedroidal surfaces of natural diamonds from kimberlites are described. The surface features are classified into three groups by their coexistence on the ...
The paper is devoted to the karst role in the formation of aureoles of kimberlite indicator minerals (KIM) and diamond placers in the modern alluvium of the Muna-Markha interfluve. Its territory is open, i.e., the Lower ...