摘要
山东金伯利岩中的副矿物钛钡铬石、钛钾铬石在我国属首次发现,它们是锶钛铁矿族一个类质同象系列的大阳离子分别以Ba和K为主的两种新矿物。本文通过化学成分、穆斯堡尔谱、反射光谱、X射线粉晶衍射等分析研究,为这两种矿物提供了有意义的矿物学资料。
The lindsleyite-mathiasite series was found in a kimberlite dyke, ShandongProvince.Lindsleyite and mathiasite are the Ba and K members of the AM_(21)O_(28)series. In the series minerals, approximately 70% of the A site is occupiedby Ba and K. 17 minerel crystals were analyzed using electron microprobe. The mineralslindsleyite and mathiasite were studied by Mossbauer spectroscopy. The preli-minary results show that Fe in these two minerale has two valent states: Fe^(2+)and Fe^(3+). Both Fe occupy respectively the octahedral and tetrahedral sites inthe crystal lattice. Lindsleyite and mathiasite are very similar in spectral reflectance. The X-ray diffraction patterns of lindsleyite and mathiasite were obtained using D6CX-ray diffractometer. Unit cell parameters were calculated using PROGRAM-9214. Hexagonal cell parameters are: α=10.37A, c=20.68A for lindsleyiteand α=10.36A, and c=20.64A for mathiasite.
出处
《矿物学报》
CAS
CSCD
北大核心
1989年第1期25-32,共8页
Acta Mineralogica Sinica
