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一、前言矿物包体作为成矿介质的样品和译解成矿作用的密码,在矿床学和其他地质学领域中有着广泛用途。例如它有助于解决成矿物质的来源、迁移、富集条件及矿床成因和找矿勘探等方面问题。 1979年,我国一锑矿在一个溶洞中发现一个极美丽的石膏晶洞,大小为15×7×2.7立方米左右。洞中丛生着一些罕见的巨大石膏晶体,有的倒挂洞顶,有的平地拔起或横卧洞壁(图版1)。晶体长约1米,最长者2.4米。晶体中有丰富的单相液态包体及一些气液比不定的气-液包体,最大的气-液包体长达40厘米。对洞中五块晶体的气-液包体作了研究。镜下详细观察
I. INTRODUCTION The mineral inclusions, as the samples of metallogenic media and the code for deciphering mineralization, have been widely used in mineralogy and other geology fields. For example, it helps to solve the problems of the origin, migration and enrichment conditions of ore-forming materials, the origin of the deposits and the prospecting exploration. In 1979, an antimony mine in our country found a very beautiful gypsum crystal cave in a cave with a size of 15 × 7 × 2.7m3. There are some rare and gigantic gypsum crystals in the cave, some of them hanging upside down and some of them flattened or lying on the wall (Plate 1). Crystal about 1 meter long, the longest 2.4 meters. Crystals are rich in single-phase liquid inclusions and some gas-liquid ambiguous gas - liquid inclusions, the largest gas - liquid inclusions up to 40 cm. The gas-liquid inclusions of five crystals in the cave were studied. Microscopic observation