Exploratory and Descriptive Study of the Kimberlite Massif of Boya-02 at Eastern Kasai in the Democratic Republic of Congo

作     者：Arnold Onya Ngila Ivon Ndala Tshiwisa Ruben Koy Kasongo Serge Diemo Alain Cibumba Cibumba Chamira Fwani Pambu Dona Kampata Mbwelele Arnold Onya Ngila;Ivon Ndala Tshiwisa;Ruben Koy Kasongo;Serge Diemo;Alain Cibumba Cibumba;Chamira Fwani Pambu;Dona Kampata Mbwelele

作者机构：Centre National de Télédétection (CNT) Kinshasa The Democratic Republic of Congo Department of Exploration Faculty of Oil and Gas University of Kinshasa Kinshasa The Democratic Republic of Congo Geo-Hydro-Energy Research Group Department of Geosciences Faculty of Sciences and Technologies University of Kinshasa Kinshasa The Democratic Republic of Congo 

出 版 物：《Journal of Geoscience and Environment Protection》 (地球科学和环境保护期刊（英文）)

年 卷 期：2024年第12卷第1期

页      面：130-144页

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 

主　　题：Exploratoire Massif Kimberlitique Kasaï Oriental 

摘      要：The Boya-02 kimberlite was identified at depth by geophysical survey work (a single-probe AM survey in 1997 and a gravity survey in 2006) that De Beers DRC Exploration carried out around anomaly 193/172/0019. This anomaly located approximately 50 km southwest of the town of Mbuji-Mayi in the Kasaï-Oriental Province in the DRC should therefore be the subject of detailed exploration with the aim of better identifying and describing this kimberlite. Thus, through exploratory work and cross-checking of geophysical and geological data, the discovery of this Massif was made by drilling on the aeromagnetic anomaly 193/172/X298. Based on drilling, sampling and laboratory petrographic analysis reports, the Boya-02 kimberlite was classified among highly diluted re-sedimented volcaniclastic kimberlites (KVR), rich in olivine and incidentally in quartz and poor in juvenile substances. This kimberlite represents a deposit of very low economic interest following extremely high dilution. The Boya-02 kimberlite was modeled using ground magnetism data. It is a complex anomaly comprising 2 components with variable amplitude appearing on a subtly magnetized linear detail. The modeled dimensions of two components of this anomaly are 0.32 Ha and 0.2 Ha at depths of 32 m & 14 m for the deposits to the West and the East respectively. Garnet data for the Boya-02 occurrence reports a maximum Pmin value of 49.7 kbar (207 garnets). These data demonstrate the high diamond potential which assumes a conductive cratonic geotherm of 40 mWm2.