5 Simple Techniques For Crystal
5 Simple Techniques For Crystal
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轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
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一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
第一种是“全包裹体”，在水晶结晶的时候把这些物质包裹在晶体里面，这类包裹体所形成的各种景象，大多保持了水晶结晶时的原状，也就是说保存了几亿年的原状，极少受到自然环境的影响。
Crystalline construction is characterised by a geometric, repeating sample of symmetric molecular structure. The arrangement of atoms varieties these requested, repeating patterns.
Monoclinic �?Characterized by a few unequal axes, two of which intersect at an oblique angle, whilst the 3rd is perpendicular to your airplane of another two.
⑦、镀彩：运用类似电镀的手法在水晶表面以不同的色彩，层面较薄，经摩擦可划伤�?；出现划痕，由于镀彩经常位于底部，因此在镀彩底部经常采用其它对象附着，如生肖文镇。
发晶：无色、浅黄、浅褐等，可因含金红石常呈金黄、褐红等色，含电气石常呈灰黑色；含阳起石而呈灰绿色。
Q.4. What is the distinction between atomic structure and crystal structure? Ans. The main difference between atomic framework and crystal construction lies in their definitions: atomic framework click here refers to how atoms are arranged inside of a one molecule or a cluster of molecules, Whilst crystal composition problems the precise arrangement of atoms inside of a reliable compound.
广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
15The trick to a very good thermoelectric substance can be a crystal construction where electrons can movement freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
The sodium chloride crystal lattice is characterised because of the shut packing on the positive sodium ions and negative chloride ions. Every single sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by 6 sodium ions, developing a highly secure and symmetrical framework.
⑤、打孔：是在水晶成品未完成前，根据其所需打孔之尺寸及位置，以钻头加工，如制表件、笔筒、瓶孔等。
Tetragonal �?Characterised by 3 mutually perpendicular axes, two of that are equal in length, when the third is extended or shorter and perpendicular to one other two.