摘要
本文用直接付里叶交换法测定我国产出的10个累托石样品结构中两类晶层(A云母层、B蒙皂石层)含量(A%、B%)及规则度(Re%)。测定结果表明天然累托石中,A/B不等于1,1.27>A/B>1.01。A%为50.5%—55.8%,B%为44.2%—49.5%;A、B层也不是严格规则交替堆垛,规则度Re%为72%—98.6%。
Amounts (A%, B%) and alternating stacking regularity (Re%) of two typesof crystal layer (A--mica layer, B--smectite layer) in the structure of ten recto- rite samples from China were determined by direct Fourier transform method.It is known from the determination that A% varies in the range of 50.5%--55. 8%, B% 44.2%--49. 5%, and Re% 72%--98. 6%.The results Show that the twotypes of crystal layer (A and B) in the structure of natural rectorite do notstrictly alternate in accord with the 1: 1 regularity (A?B, 1.01< A/B< 1.27,Re% < 100% )。Nine rectorite samples have quite high reghlarity (Re% >96%)and exhibit fairly perfect intetstratified structure. With A% being 55.8% (>55%) and Re% 72% (<90%), the No. 6 sample does not have perfect interstra-tified structure and thus seems to be a randomly interstratified rectorite/mica mineral. In this paper, the formula Re% = A^3B^3 × 100/AB (%) is defined asregularity of rectorite. The percentage method has the advantages of easy cal-culation and high data reliability.
出处
《岩石矿物学杂志》
CAS
CSCD
1993年第3期261-268,共8页
Acta Petrologica et Mineralogica
关键词
累托石
晶层含量
规则度
云母层
rectorite
crystal layer content
regularity
mica layer
smectite
