Alteration of shale adjacent to the Knight orebody, Rosiclare, Illinois
Alteration of shale adjacent to the Knight orebody, Rosiclare, Illinois
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伊利诺伊州罗西克莱尔 Knight 矿体附近页岩的蚀变
DOI：
10.2113/gsecongeo.70.6.1062
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发表时间：
1975
期刊：
影响因子：
5.8
通讯作者：
W. C. Hood
中科院分区：
文献类型：
--
作者：
M. E. Daniel;W. C. Hood
对距离奈特萤石存款4至3,800英尺的82个小于1微米的粘土样品进行了热液蚀变影响的检查。伊利石的1 Md多晶型物，含有少于5%的可膨胀层，是唯一的粘土矿物发现。10A峰的高度与宽度比表明在接近矿石的结晶度略有改善。化学分析表明，镁，钾，氟的含矿断层附近的增加，而钙略有下降。钠仅在一个小的地层间隔中增加，硼与矿石的关系没有变化。
Eighty-two less-than-one-micron clay samples ranging in distance from 4 to 3,800 feet from the Knight fluorspar deposit were examined for effects of hydrothermal alteration. The 1Md polymorph of illite, containing less than 5 percent expandable layers, was the only clay mineral found. Height vs width ratios of the 10A peak indicate a slight improvement in crystallinity in proximity to ore. Chemical analyses reveal an increase in magnesium, potassium, and fluorine close to the ore-bearing fault, whereas calcium decreases slightly. Sodium increased in only one small stratigraphic interval, and boron showed no change with relation to the ore.