Occurrence and Structural Properties of Wavellite from the Miryang Clay Deposit

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(1) , 34, 6 , 649-652, 2001 Econ. Environ. Geol., 34(6), 649-652, 2001.

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(3) . . . . Occurrence and Structural Properties of Wavellite from the Miryang Clay Deposit Chang Oh Choo1* and 1. Department of Geology, Kyungpook National University, Daegu, 702-701, Korea School of Earth and Environmental Sciences, Seoul National University, Seoul, 151-742, Korea. 2. h & CeR\ - L ' l8mn8 H 9R 92 _ F5 TUYZ9: : $ ¡ e¢: £¤ AP¥R }" -" 4 " , 5uvwu d W¦2 A4 5 5uvwu d§ zo{\ ¨£PQ F © W¦: fªi «¬¥R fª' ®: £¤ R¯R0¡ L5 abc > °l92 : ±²$ ]/2 n³± R ML ®'±i ´5 : 5UL ±²$ \ 9[: : µ¦)" 0 B2 ^_4 ` F5. !"#$ % & ' ()*+ )(*+ , -"*+ ./ 01 2 3(45 $ 67 8 .

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(11) . . XRD pattern of wavellite. SEM micrograph of wavellite showing aggregates of radiating fibers. Scale is 100 µm..

(12) Comparison of unit cell parameters of wavellites calculated using X-ray diffraction data. Source. a(Å). b(Å). c(Å) volume(Å). Karst phosphorite unknown 3 polymetallic deposit 4 Arkansas 5 Miryang clay deposit. 9.74 9.57 9.61 9.62 9.63. 17.15 17.3 17.34 17.36 17.37. 6.99 6.98 6.99 6.99 7.00. 1 2. 1170.6. 1. Shmel’kova et al. (1966) 2 Fu and Ti (1966) 3 Breskovska and Ivchinova (1962) 4 Araki and Zoltai (1968) 5 This study. A § § c4 Õi K¶L B5 Í9: hi ^ & !g/2 pYZ Öq§ T×7 K 45 ½Zh cÌ$ nÅÄ _ Ø Ùk R¯RÎ h¡\ Ú/ ÛÜi L5 nÅÄ Ý \ & Þ 5Ü2 Ý Ý nÅÄÕ Ûk R¯ß5 67 nÅÄ nÅÄ$ × ¡ nÅ¡\ 0 àa Õ$ |áPQ âã R: nÅÄäå ^5 dw 9c )θ æ R¯ß nÅÄi 92 çW®èé i + ¿5 ê Ý ê Ý ê Ý2 5ë A: § ¥: ÚìL íi ^5 c0 î¡ !"# Ë ï: ½®Á µð0 àa ñ¡ ò k ócº9i ^& !\ ôõ c F5 $8. . . <=;. . . 4 0 +)+. . 0)). #>.!+.. +#>.::). . . ):+#>. +)+. +. . & ( . )?+. . BSE images of wavellite. (a) Acicular wavellite(W) associated with dickite(D) and pyrophyllite(P). Tourmaline (T) is relatively well-crystallized. (b) Enlarged image of the arrowed area in photo (a).. Ì$ Í9h: £¤\ 92 R¯RÎ \®Ï ³cÐ h: Ñ0§ ÒÓ\ Ô\ B 6J/5 5uvwu d . 4 . 4 ). %. %@. %. A &&. . (. . # >0. 1. >!0!. >!+. B1 . . . . . . .

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(20) L 5UL "/ éi µÓ /+L5 : h !/ 6J , u& (ÆZ¡ - ¡. õ B2 045. 56 &. XRD patterns of wavellite at various temperatures. Background thresholds in intensity were reduced for comparison.. $%%. ). . . .

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