新类型难识别矿地球化学勘查

讨论了4种新类型难识别矿的地球化学勘查研究进展,包括使用深穿透地球化学方法在吐哈盆地砂岩型铀矿的试验和在胜利油田伴生金的地表地球化学显示,从全国铂的地球化学分布看西南黑色岩系中寻找铂族元素的前景,地球化学填图增加到70余种元素分析对稀有、分散元素的研究和寻找将起到巨大的作用。

GEOCHEMICAL EXPLORATION FOR NEW DIFFICULT-TO-BE-RECOGNIZED TYPES OF MINERAL DEPOSITS

Exploration geochemistry has made great successes in the discovery of mineral deposits which are difficult to be recognized. Although splendid achievements have been made, exploration geochemistry is facing new difficult-to-be-recognized types of mineral deposits such as sandstone-type uranium, PGE hosted in black shales, rare and dispersed elements and gold associated with oil basin. This paper briefly describes exploration geochemistry for these 4 new difficult-to-be-recognized types of mineral deposits. Deep-penetrating geochemical methods were used in delineation of sandstone-type uranium deposits in Turpan-Hami Basin, Xinjiang. Large-sized gold anomaly was delineated in Shangli oil field, Shangdong, which probably indicates gold mineralization associated with the oil field. The distribution of Pt in China shows that PGE deposits are likely to be found in black shale sequences of southwestern China. Geochemical mapping with over 70 elements will contribute to the exploration of rare and dispersed elements.