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对南朝鲜蔚山矿山矽卡岩带中绿色石榴子石作了电子探针研究,所得结果如此:(1)此类绿色石榴子石单个晶体一般在100μm以下,透射光下呈翡翠绿色,并显示光学上的非均质体.(2)它作为充填单斜辉石及钙铁榴石(花岗岩类)系列的石榴子石细粒集合体裂隙中,或作为穿插于其中的微细裂成的充填物形式出现.(3)其中大部分出现于来自上白垩系泥质角页岩形成的矽卡岩中,也有一部分在石灰岩形成的矽卡岩出现.于是这些矽卡岩就毫无例外地都含有铬铁矿微粒.(4)它们的化学成分近似铬钙铁(ugrardite)系列的石榴子石,而且每个微粒的成分变化相当显著,多数可归入铬质钙铝榴石(grassular)范围,其中一部分过渡到
The results of the electron probe study of the green garnet in the Ulsan mine skarn belt in South Korea are as follows: (1) The individual crystals of such green garnet are generally below 100 μm and are emerald green in transmitted light and are shown Optical heterogeneous body. (2) It is used as a fissure of a garnet aggregate filled with clinopyroxene and garnet (granite) series, or as a finely divided filling (3) most of them occur in skarn from the shale of shale Cretaceous, and some are skarn-forming skarns, so these skarns are all without exception Contains chromite particles. (4) Their chemical compositions are similar to the ugrardite series of garnet stones, and the composition of each particle varies considerably, most of which can be classified as being in the range of the chrome gypsum (grassular) A part of the transition to