SECTION 26: ELECTRICAL PROPERTIES OF ROCKS AND MINERALS
SECTION 26: ELECTRICAL PROPERTIES OF ROCKS AND MINERALS
复制标题
第 26 节：岩石和矿物的电特性
DOI：
10.1130/mem97-p553
复制
发表时间：
1966
期刊：
影响因子：
--
通讯作者：
G. Keller
中科院分区：
文献类型：
--
作者：
G. Keller
材料的电学性质包括电导率和介电常数的主要性质，以及许多次要性质，如决定主要性质随频率、温度等参数变化的系数。事实上，许多岩石和矿物即使在标准条件下也没有各种电学性质的特定值，这使得很难为这些性质列出一组有意义的数字。激发极化的来源在于化学反应，当电流在岩石孔隙中的电解液和阻止这些孔隙的电子半导体硫化物矿物之间流动时，必须发生化学反应。半导体中的传导是通过电子在材料中的运动来实现的，但其导电性比在真正金属中观察到的要低得多。自然金属在自然界中很少出现，但这种出现可能具有相当大的经济重要性。
The electrical properties of a material include the primary properties of conductivity and dielectric constant, and many secondary properties such as the coefficients which determine the rate of change of the primary properties with such parameters as frequency, temperature. The fact that many rocks and minerals are not characterized by a specific value for the various electrical properties even under standard conditions makes it difficult to tabulate a meaningful set of numbers for these properties. The source of induced polarization lies in chemical reactions which must take place when electrical current flows between an electrolytic solution in the pore spaces of a rock and an electronically semiconducting sulfide mineral blocking these pores. Conduction in semiconductors is by movement of electrons through the material, but the conductivity is much lower than that observed in true metals. Native metals occur infrequently in nature, but such occurrences can be of considerable economic importance.