 | | Journal (article/letter/editorial) | | silver–zinc mines and the San Cristobal silver–lead–zinc mine. The tin, gold, lead/zinc, antimony and copper ore...Capachos, 17: Urmiri/La Paz, 20: Geysir de Sajama, 21: Kasilla/Sajama, 22: Mina Matilde. The sample locations...between 18.7 g/kg (Challapata) and 6 mg/kg (Mina Matilde). Sulphate concentrations vary between 4 and 70...Obrajes Capachos Urmiri/La Paz Geysirs of Sajama Kasilla/Sajama Mina Matilde Or Or Or Al Al Al Occ Occ...Na-HCO3 type: (13) Chaqui, (17) Urmiri/La Paz, (22) Mina Matilde. – Na-Ca-SO4 -HCO3 : (9) Laguna Salada |  | | Report (issue) | | prebatholith volcanic rocks were assigned to the Matilde and Milagros Formations by Nelson and Tobisch (1967)...(1967). According to these workers, the Matilde Formation consists chiefly of thin-bedded volcanic sandstone...Formation is distinguished from the thin-bedded Matilde Formation by the massiveness of its deposits. The...assigned a middle Eocene age because it overlies the Matilde Formation (Mclntyre and others, 1970). In the...accompanied intrusion of tonalite plutons, such as at Cerro La Torre. In the Quebrada de los Platanos, Nelson and |  | | Journal (issue) | | for nationalization of Bolivian mines—including Matilde—is so far being resisted by the Torres government...government. But taxes and royalties from Matilde may be under review. p5 NEW A FURNACE FOR nonconsumable...Steel and Philipp Brothers which operates the Matilde zinc mine in western Boliv’ Donahue: sunnier '71 for...will show gasoline additives and smelter mine output mine production, he said, is expected slightly...plans to review taxes and royalties paid by Mina Matilde Corp., the WEEK the of Eduardo switching to |  | | Journal (article/letter/editorial) | | phosphate species being described from just one mine, the Tip Top, in South Dakota. (Note: There are...County, Arkansas Dana 1892 1891 Griphite Everly mine, Harney City, Pennington County, South Dakota Headden...“arrojadite,” renamed arrojadite-(KFe) Nickel Plate mine, Keystone, Pennington County, South Dakota; cotype:...Passaglia and Gottardi 1973 1930 Seamanite Chicagon mine, Menominee Iron Range, Iron County, Michigan Kraus...renamed miserite North Wilson pit, Union Carbide mine, Wilson Springs, Garland County, Arkansas Schaller |  | | Journal (article/letter/editorial) | | Beers 945 Origin of high-Ag fahlores from the Galena mine, Wallace, Idaho, U.S.A.—Richard O. Sack, Rob Fredericks...Moorbath Evolution of the aqueous geochemistry of mine pit lakes – Blanzy–Montceau-les-Mines coal basin...transformation as observed in a field setting, Alta mine, MT— Andrew W. Schroth and Roderic A. Parnell, Jr...associations in sediments from the loess aquifer of La Pampa, Argentina—P.L. Smedley, D.G. Kinniburgh, D...Calin-Gabriel Tamas, and Adrian Minut 755 Solubility of rutile in subduction zone fluids, as determined by experiments |  | | Report (volume) | | _________ Siria mine ________________________ ------------- __ ----Los Hornitos mine ______ ;_______...Francisco mine____________________________________ La Uni6n mine ________________ -----------------------(}u...Nicaragua-----------------------------------------------La Cadena prospect----------------------------------Chromite...pa district_____________________________________ La Gringa mine_______________________________ Corona...______ __ ____ ______ _ 48 48 49 50 51 51 51 La Paz mine ______ ---------------------------Cabanas di |  | | Journal (article/letter/editorial) | | e m of Mineralogy ',z it was found at the Zufii mine, Anvil Mountain, San J u a n Co., and near Red Mountain...three samples is due to the presence of minute rutile crystals. Diaspore apparently is always present...Survey S. Africa, Pretoria, 1929, p. 39. I I . Zufii mine, Silverton, San J u a n Co., Colorado. W . F . Hillebrand...Survey, 1885, no. 20, p. 100. I I I . Charter Oak mine, Red Mountain, Ouray Co., Colorado. S . L . Penfield... Sci., 1893, ser. 3, vol. 45, p. 397. IV. Zufii mine, Colorado. B. Gossner and F. Mussgnug, Centralblatt |  | | Journal (issue) | | p 4 Falconbridge Nickel was created in 1928 to mine. smel t and ref Ine nickel . a quality nickel tha...Dcvelop1nent Corp. "ill dc,·clop it Little AG gold mine in Ontario .,s soon as possiblt'. The 1ninl• i!-...explore for copper in the Corocor D1!--trict n<.•ar La Paz. 1 Cerro Sales increa ed bisrnuth alloy prices...·clop a Bolh•ian zinc 1nin<', the nationalized Matilde n1inc-, near Titicaca LakL•. ThC' J apanc..•sc...years. Zajaca plans to reopen its D obri P otok mine. closed in 1956 because of flooding. \vhich still |  | | Journal (issue) | | titanium, very often in the form of the mineral rutile, arranged in relation to and conforming to certain...titanium, very often in the form of the mineral rutile. Rutile is the guest mineral in corundum crystallized...allochromatic mineral. Dr Gübelin records that rutile in corundum could occur syngenetically and epigenetically...reason to think that it is more the syngenetic rutile (that has undergone rapid cooling and consequent...would invariably react with favourable results. For rutile to be syngenetic in corundum, it has to have its |  | | Journal (issue) | | Pyromorphite from the Bunker Hill mine, Idaho; Wulfenite from the Red Cloud mine, Arizona; Calcite and Fluorite...Fluorite from the Elmwood mine, Tennessee; Aquamarine from Pakistan; Wire Silver from Kongsberg, Norway;...in Calcite from the Tsumeb mine, Namibia; Novacekite from the Brumado mine, Brazil; Elbaite from Nuristan...from Mogok, Burma; and Emerald from the Coscuez mine, Colombia. OUTSIDE BACK COVER: Beryl crystals: heliodor...aquamarine (right), 5.1 inches, from the Pioniera mine, Minas Gerais, Brazil; Freilich Collection. ♦ 4 |  | | Journal (issue) | | observed under a single strong light source (Figure la and b). In the literature only one reference is found...(1980) 1 2 J . Gemrn ., 1980, XVII , 1 FIG . la . Star peridot showing sheen and star under FIG...The best-known wulfenite comes from the Red Cloud mine in Arizona, though crystals from this area are generally...the Dept l'Aude in S. France(3) and in northern Spain in Aragon and Asturias(4). Outside Europe it is...Rome(2'8). Jet was used by the Celts of the Hallstatt and La Tene periods(9) and during the 15th and 16th centuries |  | | Journal (article/letter/editorial) | | 168) proves it to be triclinic. From the Animas mine of the Compagnie Aramayo de Mines en Bolivie. Named...crystals formed by the burning of pyritic ore in a mine in ArizoDa. Named after Prof. Gurdon Montague Butler...1928. Amer. Min., vol. 13, p. 69. A variety of rutile containing chromium (Cr20s 16.61 ~). Codazzite...ankerite but containing up to 7 X (Ce, La, Di)CO s ; from the emerald mine of Muzo, Colombia. Named after the...brown colour, from the Latin fulvus; 4eep yellow (rutile being from rutilus, red). Gauslinite. (A. F. Rogers |  | | Journal (issue) | | Tampa, FL Correspondents Miguel Calvo Zaragoza, Spain Michael P. Cooper Nottingham, England Thomas P....ecord Articles Rare sulfosalts from the Van Silver mine, British C olum bia...............................Balacko Famous mineral localities: The Brownley Hill mine, Alston Moor, Cumbria, England....................COVER: ATACAMITE in GYPSUM, 6.8 cm, from the Lily mine, lea, Peru. Irv Brown collection; Jeff Scovil photo...British Columbia the Silver Tunnel o f the Van Silver mine has produced hundreds o f rare and beautiful crystal |  | | Journal (issue) | | importance. According to Kanis (1980), the first mine (Miku) was given up in 1972. In the neighbourhood...water-worn quartz pebbles together with worn grains of rutile, tourmaline, limonite, jasper and quartz crystals...today it is usual to see three sieves in use—Vi\ lA" and Me". The fine sand is usually collected in a...GEMMOLOGICAL ABSTRACTS ABEL-R£MUSAT (M.). Histoire de la ville de Khotan. (History of the town of Khotan.)...abstract.) Precious and common opal from the Hosaka mine were studied optically and by TEM. The precious |  | | Journal (issue) | | features Short rutile needles, liquid-filled feathers, and negative crystals. Long rutile needles, translucent...observed in any of the samples. Short and long rutile needles, liquid-filled feathers, and negative crystals...examination showed that oriented short needles (probably rutile) are characteristic of the Thammannawa sapphires...needles (figure 15). Liquid-filled Figure 14. Fine rutile needles oriented in parallel layers form characteristic...this sapphire contains a high concentration of rutile needles that produces a copper-colored metallic |  | | Journal (issue) | | Steel have formed a joint company- Mina Matilde-to develop a zinc mine in Bolivia. A 20-year lease bas been...have an integrated facility from titanium ore (or rutile) to sponge. The sponge will then be converted into...up 297,000 tons over 1965 to 1,193,000 tons. But mine output was off 3,000 tons to 695,000, and refined...totals ran: shipments- up 240,000 to 2,360,000; mine output-off 22,000 to 1,961,000; and refined output-off...lump ore, (68\!a% ) .... ... ........$10.40 run of mine (64%) . ............. .. $8.00 pebble ore (64%) |  | | Journal (issue) | | associated with the emerald occurrence at the Miku Mine was such a dark red that it required strong sunlight...ago did show indication of gem material. The Aries mine in particular produced a quantity of light aquamarine... 35 J.Oemm., 1982, XVIII, 1 FIG. 7. FIG. 8. Rutile needles in almandine. Darkfield 6.3 x . Liquid...containing aggregated nitrogen are classified as Type la, and about 95010 of all diamonds fall into this category...containing aggregated nitrogen are classified as Type la, and about 95010 95 % of of all all diamonds diamonds |  | | Journal (article/letter/editorial) | | る｡2)〜4)の が あ ろ う｡ タ イ プ で は,2)が ②(La)N=SO‑‑130,(Yb)N=3〜5,(La/Yb)N=12 〜53と 重 希 土 の 減 少 が 大 き い｡こ れ...の網 状 鉱 体,そ れ ら の 騨S値 以 下 の とお り で あ る｡LaPaz地 Matilde=十13.1〜 余 市 鉱 山豊 丘 地 域 は 西 南 北 海 道 の い わ ゆ る グ...中 の 流 体 包 有 物 中 の塩 濃 度 と δ34S値 る｡し 新 世,そ 域 のMatilde鉱 富 む｡ 者 の 年 代 は 鉱 床 母 岩 の絹 雲 母 化 作 用 の 時 期 を...NewCaledonia高 山 理 大 ・蒜 山 研) 圧 変 成 岩 中 に はsuifidesと rutileが して 認 め られ ス イ輝 石 一 藍 閃 石 型 変 成 相 系 列 を ま れ...に 生 じ て い る｡中 応 が生 じ全 て低 化 学 組 成 に な つ て い る｡rutileも retrogradestageにspheneイ sphene化 全 く見 ら ほ と |  | | Journal (issue) | | Tampa, FL Correspondents Miguel Calvo Zaragoza, Spain Joe Polityka Staten Island, NY Jeffrey A. Scovil...Articles Famous mineral localities: The Bristol copper mine, Connecticut......................................in the U.S.A. notesfrom th r EDITORS OLD YUMA MINE Another great mineral locality has now been closed...longfamous Old Yuma mine near Tucson (see R. L. Jones, “Famous mineral localities: the Old Yuma mine,” in vol....period of activity, access to the mine was cut off in 1984. In 1996 the mine area was absorbed into the Saguaro |  | | Book | | Springfield show ( 1995: 582). Madawaska [Faraday] mine near Bow Lake, Hastings County. Some of the world's...property of, the old Madawaska uranium mine (called the Faraday mine before 1964). The mineral assemblage...blue-black and lustrous, though some which are coated by rutile or hematite are yellow or red and earthy; they...replacements of ilmenite by different combinations of rutile, anatase, brookite, hematite and titanite (Philippe...Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized minerals in the |  | | Journal (issue) | | samples examined before and after treatment) using LA-ICP-MS. For EDXRF analysis, all X-ray filter options...All spectra were collected at ~0.01 Pascal. For the LA-ICP-MS analysis, a laser beam with a wavelength of...effects of the laser penetration into the nacre during LA-ICP-MS analysis. A minute depression with a length...detected in the nacre of the cultured pearls with LA-ICP-MS, largely due to its much higher sensitivity...“chocolate” treated Tahitian cultured pearls determined by LA-ICP-MS (ppm by weight).a Sample no. Li B Na Mg |  | | Journal (issue) | | applied to improve their transparency by dissolving rutile inclusions. In addition, corundum may be heated...ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) or secondary ion mass spectrometry (SIMS)... and (right) large spherical blue halos around rutile crystals. Photomicrographs by Shane F. McClure...Consultation Service (http://oami.eu.int/search/trademark/la/en_tm_ search.cfm). Patent status was based on records...tourmaline for a short period in 1978, until the mine was abandoned due to flooding. During recent field |  | | Journal (issue) | | (1992) Etude de la variation de l’aspect de pierres taillées à l’aide d’images de synthèse. La Gemmologia...for computing the optimum cut proportions of gems. La Gemmologia, Vol. 25, No. 3–4, pp. 23–32. Tolkowsky...tuberculata (Fankboner, 1991, 1995). Four decades later, La Place Bostwick claimed to have cultured both blister...inclusions with a higher S.G. than the host gem (such as rutile nee- dles in quartz and tourmaline) will raise...its color, we suspected to be either chromite or rutile. An examination with polarized light microscopy |  | | Journal (issue) | | beryl in the world: the Ruby Violet (or Red Beryl) mine in Utah’s Wah Wah Mountains. Shown here is a unique...ACCESS Dr. Pezzotta guided the senior author to the mine in July 2003. It is located about 140 air-km (87...to the GEMS & GEMOLOGY WINTER 2003 285 The mine is situated on a low hill (figure 4), at coordinates...four-wheel-drive vehicle. Photo by Brendan Laurs. mine. The assistance of local guides was necessary for...to have been mined Figure 5. At the pezzottaite mine, most of the miners live on-site in several huts |  | | Report (issue) | | (presumably without the shrine) to a European in La Paz, Bolivui. Rolf Wein bought the specimen on July...plwto Plldi.wp11�. Yaalte: 12.5 cm wide Siglo XX Mine, ,U� Bustillo province, Potosi Malty Zinn colkdknt...Anthony R. Kampf Brian Kosnar, Saul Krotki, Jesse La Plante, Gary Moss, Bendeguz Nagy Gunther Neumeier...cassiterite 4.3 cm; Huanuni Dave Bunk specimen Jesse La Plante photo Map: Oruro Department ...............in Oruro ... 26 BY ROBERT B. COOK The Morococala Mine ............................................... |
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