They are made up from both of cubic and hexagonal diamond crystal structures, which are called a sort of intergrowth crystals. 除常见的立方金刚石结构外,还存在一种罕见的六方金刚石结构。它们通常共存在一个金刚石织构体中,形成共生晶体。
Under the high temperature and high pressure, the hexagonal graphite crystals can change into the tetragonal diamond crystals. 在高温高压下,六方晶格的石墨转变为立方晶格的金刚石。
Hexagonal habit pentlandite and sylvite inclusions have been found in a diamond from Liaoning Province. 在产于辽宁的一粒金刚石中新发现了具六方对称外形的镍黄铁矿和钾盐包裹体。
The presence of hexagonal BN was due to defects within the grain boundaries of the underlying polycrystalline diamond substrates. 而在含有大量缺陷的晶粒边界,存在六角氮化硼的成核与生长。