Preliminary investigation was earried out on the Jilin meteorite for hydrocarbonand nitrogen-bearing organic compounds. It shows that the meteorite contains 68
The present paper primarily deals with DTA data on organic matters in carbonate rocks. In combination with analyzes of organic carbon and bituminous substances
Extinetion positions can be rapidly and accurately determined with interference figures by adjusting the isogyres to the position bisected by eross wire interse
In the light of mineral assemblages, mineralogical generation and genesis of chromite ores, some geochemical aspects are investigated with respect to . relative