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本文通过结构的测定和修正。确定了各阳离子特别是Zr_+~4在钛钡铬石、钛钾铬石(蒙山矿)中的结晶学位置,证实了这两个矿物是锶铁钛矿族的分别以大阳离子Ba和K为主的两种新矿物。通过与锶铁钛矿族其他矿物的晶体结构和晶体化学特征进行对比,探讨了这两个矿物中M(4)-O M(5)O平均键长较同族其他矿物的偏大的原因,以及该族矿物晶胞的实际形态与理想形态(据最紧密堆积原理推测的)相比在堆积层内有些伸长而在堆积方向则有些收缩的原因。由于结构中较独立的M(0),M(1),M(2)配位位置的存在,故使具有共同结构特征的锶铁钛矿族矿物种类繁多,且化学成分复杂。
This article through the structure of the measurement and correction. The crystallographic positions of each cation, especially Zr_ + ~ 4 in Ti-Ba-Cr and Ti-K-Cr, were confirmed. These two minerals are confirmed to be strontium-Fe- K-based two new minerals. By comparing with the crystal structure and crystallographic characteristics of other minerals in the strontium-iron-titanium group, the reason why the average bond length of M (4) -OM (5) O in these two minerals is larger than that of other minerals in the same group is discussed. The actual morphology of this group of mineral cells is somewhat more elongated in the buildup layer than in the ideal form (as predicted by the most compact packing principle), with some shrinkage in the packing direction. Due to the existence of more independent M (0), M (1) and M (2) coordination sites in the structure, the strontium Fe-Ti-O minerals with common structural features are numerous and the chemical composition is complex.