Abstract：Bailushan rock mass is an important diamond-bearing rock mass in Northern Jiangsu Province. On the basis of the chemical composition of the chromite in Bailushan rock mass, the authors discussed its genesis and significance of the diamond potentiality and analyzed the diamond mineralization potential of Bailushan rock mass. The chromite in Bailushan rock mass has characteristics of high Cr, low Al and high Mg, which belongs to the magnochromite. It was crystallized from the peridotite that originated from the deep mantle, not a crystalline product of the rock mass, which is most likely derived from a deep-source trap in the rock mass. The crystallization temperature is 1 253~1 354 ℃, which is consistent with the formation temperature of the diamond (1 150~1 400 ℃), indicating a close relationship between them. The chemical composition of the chromite from Bailushan rock mass is very similar to that from the ore-bearing kimberlites in Shandong and Liaoning. Most chromites belong to S4 and S6, and a few chromites belong to S1 and S2. S1 and S2 chromites are the marked minerals of diamond-bearing rock mass. Bailushan rock mass has good diamond potential and prospecting prospects.
周琦忠, 张琪, 冯学知, 王博, 邱磊, 王国强. 徐州睢宁白露山岩体中的铬铁矿化学成分及金刚石的含矿性研究[J]. 中国地质调查, 2020, 7(6): 35-42.
ZHOU Qizhong, ZHANG Qi, FENG Xuezhi, WANG Bo, QIU Lei, WANG Guoqiang. Chemical composition of the chromite and diamond potentiality of Bailushan rock mass in Suining area of Xuzhou. , 2020, 7(6): 35-42.
2020, Vol. 7 
