Document OEd00jjgnmbB9wVMER0jBgrpQ

Pun 36 KEIJI YADA Table 1~ Distribution of concentric and spiral structures In the circvntferentia! lattice layers Sample . Coaling*, California' Transvaal, S. Africa Tasmania. Australia C-o.n.c_e_n_tric structure C.) 2S 54 ' 13 Single- 42 25 33 Spiral structure (%) .Double 16 19 . 13 Triple ; II 2 13 Quadruple ' 3 . .0 . ' ' 27' Total number examined 36 43 15 663 conflict with the clino-chrysotile, because such a struc by Jagodrinski A Kunze (1954) in terms of the dis ture may occur by a component of the conical roll, location theory is confirmed by the present observa additional to the original helical roll. In this case, the tions. The conically stepped structure of the growth '-.tacking of the 200 laycrs becomes imperfect and.'is end (Figs.' 7. and 8) can also be explained by this . accompanied by a component of the conical roll.Ao- ^ model. It was.found at.the same lime that the ratio of >eOrdingly, the contrast of tbo.A$&JriiigCS wotfldbe^ gho .Opa^ntHc-^ varied from come poor. The fact that ihe-tmihgies:Df twO'setavO?? -kample' to tample,' presumably depending on their' the 4-5 A fringes are asymmetrical seems to support growth conditions. From these results, the concentric this idea. lattice layers seem to exist in the Quebec sample studied (6) Growth mechanism in the previous work (Yada, 1967) though its frequency of appearance must be very small. The possibility of both concentric and spiral struc On the other hand, exceptional growth patterns such tures for the circumferential lattice layer, suggested as in fibrils D and E in Fig. 12 were found to exist. / o so too too IftMT ttalMttfa 900 400 wter HiiMtw 500 0 50 K)0 ' 200 torn* 900 400 500 4loiMtr lA) COO 40 ( Fig. |5. Frequency distributioo of tnner and outer diameter* for the sample* from different localities whose names arc inscribed with the number of fibrils examined. jimih 'i M"f!i.t|i|iiaifi (is *iii 9000 0559 / . > S' ; 7 ' PRODUCED BY FORD