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Bailey等从理论上已推导出绿泥石中共有 12种不同的规则一层多型。其中 2种多型的轴角α =10 2° ,其余 10种则均为α =90° .迄今在自然界已发现的仅有α =90°的 3种规则一层绿泥石多型 (Ⅱb - 2 ,Ⅱb - 4和Ⅰa - 4型 ) .根据透射电镜观察 ,在采自山东泗水圣水峪作为镁普通角闪石蚀变产物的辉绿泥石中 ,发现了由两种不同的规则一层绿泥石多型构成的体衍交生体 ,并确认了其中一种为属于α =10 2°的Ⅰb - 3或Ⅱab - 4的规则一层多型 ;另一种则为α =90°的一种未确定的多型。根据对 [10 0 ]晶带选区电子衍射花样测定的结果 ,该Ⅰb - 3(或Ⅱab - 4 )多型的晶胞参数为c0 =1.4 6 0nm ,b0 =0 .92 6nm及α =10 2° ;此外 ,并可推定其 β≈ 90° ,γ≈ 90°以及a0 ≈ 0 .5 35nm ,空间群为C1或C1.
Bailey et al. Have theoretically deduced that there are altogether 12 different types of regular layers in chlorites. Among them, the axial angles of the two polytypes are α = 10 2 ° and the remaining 10 are α = 90 °. The three rules of so far discovered in nature, α = 90 °, - 2, Ⅱb - 4 and Ⅰa - 4). According to the TEM observation, in the chloritools collected from Shengshuyu, Surabaya, Shandong Province, Layer chlorite polymorphism and confirmed that one of them is a regular polytype of type Ⅰb - 3 or Ⅱab - 4 belonging to α = 102 °; the other is α = 90 ° An undetermined polytype. Based on the results of the electron diffraction pattern determination of the [10 0] zone, the unit cell parameters of the Ⅰb - 3 (or Ⅱab - 4) polymorphism are c0 = 1.460 nm, b0 = 0.92 6 nm and α = 102 °; furthermore, it can be inferred that β ≈ 90 °, γ ≈ 90 ° and a 0 ≈ 0. 35 35 nm, the space group is C1 or C1.