在反映成矿外部环境变化方面,碳质具有很高的灵敏性。例如,沉积岩岩石成因的研究令人信服地表明,不同的含碳岩石发生区域和接触变质作用时,随着温压参数的增大,碳质在碳化程度和结构有序度增高的方向上按下列公式发生连续的变化:沥青—碳沥青—次石墨—石墨。这种规律性常常按碳质的变种形态作 Carbonaceous is highly sensitive in reflecting changes in the external mineralization. For example, the study of the genesis of sedimentary rocks convincingly shows that in the different regions of carbon-bearing rocks and the contact metamorphism, with the increase of temperature and pressure parameters, the carbonaceous matter is pressed in the direction of increased carbonation degree and structural order The following formula changes continuously: Asphalt - Carbon Pitch - Secondary Graphite - Graphite. This regularity is often made of carbonaceous varieties