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闪锌矿、黄铁矿与六方磁黄铁矿处于平衡时,FeS含量明显与压力有关,而与温度无关.闪锌矿的这一特点可用作地压计. 自1966年以来,闪锌矿地压计即受到地质学家的重视.它在理论与实践上适用于300~600℃(Scott和Barnes,1971;Scott,1973,1976).最近Lusk和Ford(1978)指出可适用于10千巴.Hutchison和Scott 为闪锌矿、黄铁矿和六方磁黄铁矿相平衡时闪锌矿组分的压力关系提供了一个较精确的经验公式:P(k b)=42.30~32.10 logM_(FeS)~(sp),式中P(kb)为闪锌矿形成的
When sphalerite, pyrite and hexagonal pyrrhotite are in equilibrium, the FeS content is obviously related to the pressure but not to the temperature, and this feature of sphalerite can be used as a piezometer. Since 1966, Geotechnical pressure gauges have received considerable attention from geologists and are theoretically and practically applied to 300-600 ° C (Scott and Barnes, 1971; Scott, 1973 and 1976). Recently Lusk and Ford (1978) Chiba. Hutchison and Scott provide a more accurate empirical formula for the pressure relationship of the sphalerite fraction at the equilibrium of sphalerite, pyrite and hexagonal pyrrhotite: P (kb) = 42.30 ~ 32.10 logM_ ( FeS) ~ (sp), where P (kb) is formed by sphalerite