论文部分内容阅读
为了确定滑石矿床的矿物学以及地球化学分散性质,研究了上覆于该矿床并与围岩—角闪岩有关的土壤剖面,从而提出了热带地质体中工业矿物勘查的有效方法. 矿物学分析表明,滑石矿床上的土壤中,滑石仍咋为土壤的主要成分残留,同时与石英、绿泥石、伊利石和针铁矿共生;而在角闪岩风化土壤中,大多数原生物都已分解成高岭土、石英和针铁矿。土壤中的化学成分一般要比母岩富Fe:O:、Al:0:,贫Na:O、K:O、 CaO、MgO和FeO.微量元素丰度显示了不一致的模式:Ni、CO丰度较母岩低,Zn、CO则高. 尽管热带环境具有强烈风化的特征.但滑石矿床上土壤MgO含量仍高,这显然是对土壤覆盖层下存在滑石矿床的唯一可靠的地球化学指示.MgO含量的分析结合土壤的X射线衍射分析可作为一种探测深部滑石矿体的极有效的方法.
In order to determine the mineralogical and geochemical dispersion properties of the talc deposit, the soil profiles that are overlying the deposit and related to the surrounding rock-amphibolite have been studied, and an effective method for industrial mineral exploration in tropical geology has been proposed. Shows that talc still remains the major component of the soil in the soil present in the talc deposit and coexists with quartz, chlorite, illite and goethite, whereas most of the protozoa in the amphibolite weathered soil have decomposed Into kaolin, quartz and goethite. The chemical composition of the soil is generally enriched in Fe: O :, Al: 0 :, poor Na: O, K: O, CaO, MgO, and FeO than the parent rock.The trace element abundance shows an inconsistent pattern: Ni, CO abundance Which is lower than that of parent rock while Zn and CO are high.Although the tropical environment is characterized by strong weathering, the content of MgO in the soil of talc deposit is still high, which is obviously the only reliable geochemical indication for the presence of talc deposit under soil cover.MgO Content analysis combined with soil X-ray diffraction analysis can be used as a very effective method to detect deep talc ore body.