摘要
正确的晶体定向，其晶体几何常数应与内部结构中的晶胞参数一致，而在《砂矿物图册》中的方柱石和钨铅矿、《系统矿物学》上册中的褐锰矿，却是"晶形的（100）与单位晶胞的（110）相同"。在《系统矿物学》下册中的钼铅矿和《砂矿物图册》中的甘汞、黄铜矿、金红石及《系统矿物学》上册中的黄铜矿、块黑铅矿、金红石，虽然走向正确，但在矿物晶形制图和单形符号标注上，有些差错；还有一些晶形图的差错可能是由于做图不规范或清绘时笔误造成的，如《系统矿物学》上册中的软锰矿、《砂矿物图册》中的钙轴云母和铜铀云母等等。鉴于此，笔者对方柱石、钨铅矿、银铅矿、甘汞、软锰矿、钙铀云母、铜铀云母、重担铁矿、锡石、氟镁石、黄铜矿、褐锰矿、块黑铅矿、金红石等14种矿物晶形图的差错做了改正。首先用上述14种矿物的晶胞棱长计算出各矿物在原书中所给定的诸单形的晶面角度值（方位角平和极距角产）；再依此做出各矿物的极射赤平投影；然后，对原书中各矿物的晶形图进行分析，找出并改正其中的差错部分；最后，利用正确的定向，用极射赤平投影作晶体立体图的方法，做出上述各矿物的精确的晶体立体图形，并做简要的文字描述。
According to correct crystal orientation,geometric constant is consistent with the unit cell parameter,but as to scapolite and stolzite in the 'Atlas of Mineral Sands'and braunite in the upper volume of the 'Systematic Mineralogy', the crystal face (100) is consistent with the unit cell (110 ). Although some minerals have correct orientations, there are some mistakes in drawing crystal forms and symbols. These minerals are as following:wulfenite in the lower volume of 'Systematic Mineralogy',cafomel,chalcopyrite and rutile in the 'Atlasof mineral Sands'and chalcopyrite,plattnerite,rutile in the upper volume of the 'SystematicMinerals';Some mistakes are maybe due to unnormal drawing,such as the pyrolusite in theupper volume of the 'Systematic Mineralogy'and the autunite and torbernite in the 'Atlasof Mineral sands'. Thus,the author makes correction to 14 kinds of minerals in this paper,they are, scapolite, stolzite, wulfenite, calomel, pyrolusite, autunite, torbernite, tapiolite,cassiterite, sellaite, ehalcopyrite, braunite, plattnerite and rutile, etc.First,the author measured the angular value of crystal face (azimuth and polar anglep) according to the edge length of the above 14 kinds of minerals, and made the polarstereographic projection of every mineral on this basis ;then,analysed the crystal forms and corrected many mistakes ;made the crystal forms by using the polar stereographic projection,and made the correct crystal forms of the above minerals and a brief description as well.
出处
《山东地质》
1997年第2期84-97,共14页
Geology of Shandong
