 | | Journal (article/letter/editorial) | | 1973 福島県宝坂産蛋 白石 について* OPAL FROM HOSAKA, FUKUSHIMA PREFECTURE, JAPAN 堤 坂 本 貞 夫(Sadao Tsutsumi)** ...known that opal occurs from Hosaka, Fukushima Pref., northeastern Japan . The opal is found as crusts...translucent ones are usually composed of spherulitic chalcedony , while milky white layers are occupied by opal...X-ray powder diffraction patterns of opal from Hosaka are divided into three as follows; (1) a more or...日 化 雑, 79, 42‑44. 須 藤 俊 男(1949),蛋 40‑41. Japan, 56, 137-142. 須 藤 俊 男(1967),粘 111‑115. 白 石 のX線 | | | Journal (article/letter/editorial) | | TEXTUREAND MINERALS IN OPALFROMHOSAKA, FUKUSHIMA PREFECTURE, JAPAN 秋 月 島 田昱 瑞 彦(Mizuhiko 郎(Ikuro Akizuki)*...Precious and common opals from the Hosaka mine, Fukushima Prefecture, Japan were studied by means of optical...of the Hosaka opal mine. 郎 Optical micrograph Black area is opal. of opal and chalcedony Crossed... 68, crystallinity J. of 749-757. notes Japan. 本 尚更(1973),福 鉱 学 会 誌, light 424-434. Microstructure...Betterman, Flt 279 Geol. on some Soc. opal Japan. 島県 宝坂 産蛋 白石 につい 295‑302 Wilson, M. J., J. D. |  | | Journal (article/letter/editorial) | | the form of semiprecious gems as onyx, jasper, chalcedony, and agate precipitated from silica-rich solutions...crystal growth rate (e.g. Laudise, 1959 and 1987; Hosaka & Taki, 1989a and b). However, there have only...ranging from 100 to 200 MPa created by 10 % fills (Hosaka & Taki, 1989a). and the activation energy determined...480ºC and pressures ranging from 100 to 200 MPa (Hosaka & Taki, 1989a and b). It appears that the maintenance...Mg, K, Al and Fe ions. Marine Geol., 147, 13-24. Hosaka, M. & Taki, S. (1989a): Hydrothermal growth of |  | | Journal (article/letter/editorial) | | spectral data. Sporadically, spectra of quartz and chalcedony overlapping the opal spectrum were collected...Texture and minerals in opal from Hosaka, Fukushima Prefecture, Japan. Journal of the Japanese Association |  | | Report (issue) | | mineral col lector, was born in Kanazawa, Ishikawa Prefecture, on August 30, 1874. Soon after his graduation...a mining engineer at the Arakawa Mine, Akita Prefecture. In 1909, he was promoted to Director of the...of the Director of the Yoshioka Mine, Okayama Prefecture, for about seven years altogether. He returned...technology in the first half of this century in Japan. He retired from the Advisory Board of the Mitsu...such volumes as " Beiträge zur Mineralogie von. Japan ", Neue Folge I and II (T. Ito, 1937), " Japanese |  | | Journal (article/letter/editorial) | | Agates from basalts display bands consisting of chalcedony fibers with low-trace-element content that repeatedly...experimental hints, e.g., Kastner et al., 1977; Hosaka and Taki, 1981); that fibrous textures are produced |  | | Journal (article/letter/editorial) | | Iwasaki Sobudai-Danchi 1-6-15-12, Sagamihara 228, Japan (1962) first postulated the sharp bands at 3435...in NaOH or Na2CO3 solutions. On the other hand, Hosaka et al. (1981) reported that synthetic crystals...673–686 Frondel C (1982) Structural hydroxyl in chalcedony (type B quartz). Am Mineral 67: 1248–1257 Griffiths...of synthetic quartz. J Cryst Growth 19: 125–132 Hosaka M, Taki S, Nagai K and Asahara J (1981) Synthetic |  | | Journal (issue) | | hand. I do know of one instance where a stained chalcedony bead bracelet was sold as emerald because it...minerals in opal from Hosaka, Fukushima Prefecture, Japan.) J.Geol.Soc. Japan, 74, 274-9, 9 figs, 1979...English abstract.) Precious and common opal from the Hosaka mine were studied optically and by TEM. The precious...containing chalcedony or agate, quartz or rock crystal are good collectors' pieces. Libyan chalcedony was used...Hulsberg, Netherlands. 1980 Nakajima, Minako, Tokyo, Japan. 1980 Nichols, Robert T., Albuquerque, N.M., U.S |  | | Journal (issue) | | Gemology, contact GIA Japan, Okachimachi Cy Bldg., 5-15-14 Ueno, Taitoku, Tokyo 110, Japan. Our Canadian goods...1985; Bukin et al., 1986; Schmetzer, 1988, 1990; Hosaka, 1990; Koivula et al., 1996). Hydrothermally grown...emeralds—that is, 0.70 to 1.53 kbar, as summarized by Hosaka (1990)—but in a similar temperature range of 500°–...emeralds (see Pough, 1965; Lebedev et al., 1986; Hosaka, 1990; Sosso and Piacenza, 1995; Sechos, 1997)...(Flanigen et al., 1967; Galia, 1972; Sunagwa, 1982; Hosaka, 1990). The tiny birefringent crystals have a refractive |  | | Journal (issue) | | emmo 0 Volume 28 N o . 5 January 2003 Chrome chalcedony Sky-blue glass / Brazilian imperial totiaz... J. Gemm., 2003,28,5,257-264 A new chrome chalcedony occurrence from Western Australia Margot J. Willing...e-mail: nyanga@icenet.com.au ABSTRACT: Chrome chalcedony, an ornamental rock variety new to Australia...properties are within the range characteristic of chalcedony with RI 1.539 and SG 2.57. The dark green colour...α-quartz form part of the chalcedony matrix. Mtorolite, a variety of chrome chalcedony first described from |  | | Journal (issue) | | Tester was used on setting '90' and the made in Japan (Koivula and Kammerling, Kammerling, 1989, 1989...N., 1978. Plastic Imitation Opal. J. Gemm. Soc. Japan, 5, 2, 61-5. Horiuchi, N., 1982. New synthetic opal...inclusions, rhodochrosite, rhodochrosite, nd chrome chalcedony, chrysoprase Chrysoprase aand green chrome M...Switzerland. Kitawaki, Hiroshi, Saitama Pref., Japan. Leong, Margaret, Bandar Seri Begawan, Brunei. Mani...Margaret A., London. Harada, Kayoko, Kanagawa Pref., Japan. Harris, Richard J., Carlisle. Hawes, Rona M., Redhill |  | | Journal (article/letter/editorial) | | silica gives way to fast convectioncontrolled one (Hosaka and Taki, 1986). Another example pertains to diagenesis...the small size (20 nm) of quartz grains of the chalcedony (Azaroual et al., 1997). The latter situation...sinter,” Mineral. Deposita 35, 48–62 (2000). M. Hosaka and S. Taki, “Hydrothermal growth of quartz crystals |  | | Journal (issue) | | thorium. Introduction The recent publication of Hosaka, Tubokawa, Hatushika and Yamashita on red beryl...traces published by Shigley and Foord (1984) and by Hosaka et al. (1993), although the absorption peaks of...content - 2.8 per cent compared with 1.3 per cent (Hosaka et al.) and 1.5 1.8 per cent (Shigley and Foord)...assistance with micrprobe analyses. References Hosaka, M , Tubokawa, K., Hatushika, T., Yamashita, T...of rhodonite, rock crystal, various colours of chalcedony and the small d i a m o n d s , often set in |  | | Journal (issue) | | are grateful to Professor I. Sunagawa of Tokyo, Japan, for the translation of the relevant literature... Canadian Mineralogist, 34,1253-86 Miyata, T., Hosaka, M., and Chikayama, A., 1987. On the inclusions... Lapidary Journal, 42(11) 34-6 353 Chrome chalcedony - a review Dr Jaroslav Hyrsl Kolin, Czech Republic...artificially dyed Cr-chalcedony are given for comparison. Keywords: Bolivia, chrome chalcedony, Roman intaglios...Introduction 353 C ryptocrystaUine quartz, chalcedony, has many varieties of which the green Chrysoprase |  | | Journal (issue) | | pink and violet varieties have been produced in Japan by Adachi New Industrial Ltd. of Osaka (Chikayama...entered the trade. Although it is well known that in Japan and particularly in Russia various other synthetic...UVS UVL (long wave) (short wave) colour ANICS (Japan) reddish violet pale blue 'wa termelon' 1.563 ...obtained on a number of synthetic beryls produced in Japan and Australia. The recent red beryls show strong...and Miyata, T., 1987. Synthetic gemstones from Japan. Transactions of the XXI International Gemmological |  | | Journal (issue) | | chipping, such as diamond, corundum, jadeite, and chalcedony. Because the table area of a gemstone is very...minor impurity minerals, and the other that is chalcedony mixed w i t h (and colored b y ) sugjlite. ABOUT...Muralzami et al. (1976) from a locality in southwest Japan. There it occurs in limited amounts as small brownish...bears no resemblance to the "type" material from Japan. Manganoan sugilite from the Wessels mine has been...sugilite to those that contain major amounts of chalcedony mixed with manganoan sugilite. Although standard |  | | Journal (issue) | | EDITORIAL REVIEW BOARD Shigeru Akamatsu Tokyo, Japan A. J. A. (Bram) Janse Perth, Australia Thomas...Gemology, contact GIA Japan, Okachimachi Cy Bldg., 5-15-14 Ueno, Taitoku, Tokyo 110, Japan. Our Canadian goods...the material has been marketed in the U.S. and Japan. Small cut goods have been used primarily in custom...1980–1981; Bank and Bank, 1982; Flamini et al., 1983; Hosaka et al., 1993; Harding, 1995). These include the...(Nassau and Wood, 1968; Shigley and Foord, 1984; Hosaka et al., 1993). Platonov et al. (1989) attributed |  | | Journal (issue) | | Ph.D., F.G.A.*, F.G.A.*, Masahiro Masahiro Hosaka, Hosaka, Ph.D., Ph.D., F.G.A.* Takéshi F.G.A.* and...Tokojicho, 1955-1, 1955-1, Kofu, Kofu, 400, 400, Japan. Japan. †A. tA oChikayama Chikayama Gem Gem Laboratory...Ogikubo, 1-36-16, 1-36-16, Tokyo, Tokyo, 167, 167, Japan. Japan. Abstract Abstract from Santa Sama Terezinha...from Minas Gerais Gérais heats to to blue/pink. Chalcedony stained blue with copper salts develops copper...Aud N . , Grimstad, Norway. Aoki, Yuka, Osaka, Japan. Arthur, Lynne, Denny. Atkins, Tristan A., Banstead |  | | Book (volume) | | Law, 90 B. Quartz Twins with Inclined Axes, 91 Japan Law, 91 Additional Laws, 96 Oriented Growths 100...Rock-Crystal, 192 Fine-Grained Varieties, 195 Chalcedony, 195 Structure, 195 Optical Properties, 195...The structural identity of chalcedony with quartz and of calcined chalcedony and quartz with cristobalite...at the termination. This feature is typical of Japan twins and of crystals distorted by twisting around...identical twisted fibers of quartz found in some chalcedony are even more remarkable. These fibers, often |  | | Journal (issue) | | into light and dark areas. A reading of 1.54 for chalcedony was obtained immediately and with the utmost...material is apparently synthesized synthesized in Japan, and it is helpful helpful to note that when examined...Prof. Dr S.TakiandDrM. Taki and Dr M.Hosaka,FGA* Hosaka, FGA* Institute ofInorganic of Inorganic Synthesis...of Engineering, Yamanashi University, Kofu, Japan. Japan. *Present address: Institute Institute of ofGemmology...Tokojicho Tokojicho 1955-1, 1955-1,Kofu, Kofu,Japan. Japan. Abstract Results Various aspects physical |  | | Journal (issue) | | reversals: inclusions as symmetrical art. Chikayama, A. (Japan). Recent report from Burma: gem occurrences and...characteristics of corundum from Santa Catarina. Shida, J. (Japan). The colour of padparadscha sapphires. Arps, C...in continental Brazil: a Miyata, T., and Hosaka, M. (Japan). On the synthesis of rose quartz. Schmetzer...darker material, but not in sugilite with high chalcedony content. R.K.M. SHIGLEY, J.E., KOIVULA, J.I...region of South Africa, some of it intermixed with chalcedony of similar hue. An excellent material for cabochons |  | | Journal (issue) | | superior colour discovered recently: RIs high. Pearl. Japan worried that China may process their own freshwater...[cultured] pearls which are at present processed in Japan. A fine pink topaz and peridot suite of jewellery... XVIII, 3, 169-73,17 figs in colour, 1982. A chalcedony cameo repaired with plastic cement; a fake octahedral... R.K.M. KOMOTAUER (S. K.). Chalcedon, SiOi. (Chalcedony, Si02.) Mineralien Magazin, 6, 7,315-22,14 figs...1982. A beautifully illustrated summary of the chalcedony varieties. M.O'D. KOZLOVA (O. G.), BELOV (N. |  | | Journal (issue) | | evidence of water. Microprobe analyses indicated a chalcedony and agate. The question arises as to composition...material is the polishing powder, a by-product as chalcedony varieties are mined extensively in derived while...method. The details of bead Lapidary, hard stone, chalcedony, bow-drill, making and construction and mechanism...off intergranular/interfibre water molecules of chalcedony powder and makes the cryptocrystalline silica...on the petrology of gemstoneforming processes: chalcedony/agate.) Kurzmitteilungen aus dem Institut für |  | | Book | | half a century’s work at the Geological Survey of Japan, Tohoku University, and the Yamanashi Institute...rock-crystals from the Otome Mine in Japan. According to the Japan Law (see Section 10.6), these are larger...in Physics, vol. 44, Tokyo, Physical Society of Japan C. J. Schneer, Crystal Form and Structure, Benchmark...form, with branches in six directions, which in Japan is referred to, rather poetically, as the “six petal...deposits in the Tertiary formation in North-Eastern Japan. Habitus variation like this shown by the same crystal |  | | Report (issue) | | Nguyen photo Upper middle: Quartz variety amethyst (Japan-law twin), 1.6 cm tall Andilamena, Toamasina province...Scovil photo Upper right: Amethyst, moonstone and chalcedony circa 1910 British "suffragette" brooch; Tadema...ammonium fluoride solution at neutral pH. And in 1983 Hosaka and Taki succeeded in crystallizing amethyst in...on the terminations. 18 AMETHYST TWI N N I NG Japan-law twins are externally manifested by two crystals...are among the handful of localities that produce Japan-law twinned amethyst. Dauphine- and Brazil-law twinning |
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