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矿床普查方法所面临的一项迫切而复杂的任务,就是发现隐伏矿和盲矿体。在已开发矿区,在所有的找矿技术手段中,岩芯深钻所起作用最大。然而,对手查明那些赋有于地表火山作用所形成的构造-建造组合中的多数热液矿床(其中包括稀有金属矿床,例如钼矿)来说,这类工程奏效甚微。这些矿床的矿体以其边界范围小(与所布置的普查钻探网相比)和形态奇特为特征。对于不同的找矿阶段,用通常规格的钻探网截切这类矿体的概率是很小的。
An urgent and complex task faced by the deposit census method is to discover hidden and blind ore bodies. In the developed mining area, deep core drilling is the most effective of all the ore prospecting techniques. However, adversaries have found little success with identifying the majority of hydrothermal deposits (including rare metal deposits such as molybdenum) in the tectono-tectonic assemblage formed by surface volcanism. The ore bodies of these deposits are characterized by their small boundary area (compared to the census drilling network laid out) and peculiar morphology. For different prospecting stages, the probability of cutting this type of orebody with the usual size drilling network is small.