 | Gaudin, Anne, Ansan, Véronique, Lorand, Jean-Pierre, Pont, Sylvain (2020) Genesis of a florencite-bearing kaolin deposit on ordovician schists at Saint-Aubin-des-Châteaux, Armorican Massif, France. Ore Geology Reviews, 120. 103445 doi:10.1016/j.oregeorev.2020.103445 | Journal (article/letter/editorial) | | schists at saintaubin-des-chateaux, armorican massif, france Anne Gaudin, Véronique Ansan, Jean-Pierre Lorand...at saint-aubin-des-chateaux, armorican massif, france, Ore Geology Reviews (2020), doi: https://doi.org/10...AT SAINT-AUBIN-DES-CHATEAUX, ARMORICAN MASSIF, FRANCE Anne Gaudina, Véronique Ansana, Jean-Pierre Loranda...2 rue de la Houssinière, BP92208, 44322 Nantes, France. b Institut de Minéralogie, de Physique des Matériaux...7590, IRD UMR 206, 61 rue Buffon, 75005 Paris, France. Keywords: Kaolinite, Al phosphate, REE, weathering |  | | Journal (article/letter/editorial) | | 6, 586--595, 2001. MINERALOGY OF DICKITE AND NACRITE FROM NORTHERN TAIWAN PEI YUAN CHEN 1, MING KUANG...Abstract-Nacrite and dickite are found in two localities in northern Taiwan. One, containing nacrite and dickite...associated with a gold-enargite deposit as a vug-filling clay in the Chinkushih (CKS) mine district near...used to characterize the mineralogical features. Nacrite most often takes the unusual form of rhombic platelets...both nacrite and dickite are of hydrothermal origin. In the CKS area, the formation of nacrite and dickite |  | | Journal (article/letter/editorial) | | VOL. 2, No. 2, pp . 103-113, NACRITE-BEARING THE KAOLIN KASUGA MINE, PREFECTURE, CLAY FROM KAGOSHIMA...Institute, University of Tokyo** ABSTRACT Hypogene mine, as rocks. They method, and From from kaolin...epithermal of vein and under subjected the mine the in the ore it microscope is of occurrence...concluded nacrite, of alteration to differential studies, is composed features gold hydrothermal... described. Introduction Nacrite Iwai and is the others6) of nacrite found and Southern dickite |  | | Journal (article/letter/editorial) | | basalplanes,showingthat theyareformed Dickite and nacrite by spiralgrowth mechanisms from solutionphasesof...microscopy called the decoration method, in which minute gold grains are preferentiallynucleated along steps on...there are three species-kaolinite,dickite, and nacrite-whose structuresdiffer in the stacking of kaolin...Samotoyin (1971)also observedinterlacedspiralson nacrite and interpreted them in terms of translation onlv...heating gold grains held in a tungsten coil heater. The temperatureof the sample at the time ofl gold evaporation |  | | Journal (article/letter/editorial) | | mass contains a small proportion of kaolinite or nacrite, indicating interstratification or at least mixtures...kaolinite-dickite, dickite and mixtures of dickite-nacrite could be attributed to hydrothermal processes ranging...Key Words—Blocky Crystal, Dickite, Kaolinite, Nacrite, Polytypes, Vermiform Stack. INTRODUCTION Kaolins...obtained from fresh surfaces of raw materials after gold coating under vacuum. Infrared spectra were obtained...consists Figure 1. Geological map of the Deogbong mine area in southeastern Korea. Note that some clay |  | | Journal (article/letter/editorial) | | among the three polytypes (kaolinite, dickite and nacrite) in kaolin minerals. Until now the most plausible...high density of twin faults was reported in a nacrite sample by TEM investigation (Buatier et al., 2000)...Kasuga mine, Kagoshima Prefecture, Japan, which is a high-sulfidation type of gold deposit. Gold mineralization...XRD pattern of a kaolin specimen from Kasuga gold mine, Japan. (b, c) SEM micrographs of kaolin minerals...kaolinite and dickite belong to subfamily A and nacrite to subfamily D (Bailey, 1988). Hence HRTEM recording |  | | Book | | naturelle Minéralogie Béziers, de de Toulouse, France, de la Société Linnéenne Normandie, Correspondant...OISEAUX, PRULIIIÈRE la Rose cet Géologique de France, de M. : Cte l’Ordre Impérial DES DU POLYMATHIQUE...Société de MORBIHAN. LIMUR du général la cet France, OISEAUX, PRÜLHIÈRE. DE la Commission de ... d’Histoire naturelle de Toulouse, Béziers, France, de la Société Linnéenne de Normandie, Correspondant...notre établissement le plus important de II France, l’École des Mines ; c’est aussi celle suivie dans |  | | Report (issue) | | the kaolin minerals kaolinite, dickite, a nd nacrite ·were described. -In that paper the application...processes, like kaolinite but unlike dickite and nacrite, the other kaolin minerals, which are cominonly...earlier paper 1 the minerals kaolinite, dickite, und nacrite we-re described. These studies have been continued...relation to the minerals kaolinite, dickite, and nacrite of the kaolin group, but the 'p resent study shows...it is impossible to obtain material from the old mine openings. Several specimens of halloysite from these |  | | Journal (article/letter/editorial) | | Shimoda Tosudite from the Takatama mine is found as an alteration mine ral of the wall rocks (luff and tuffaceous...tuffaceous sediments of Tertiary ag~) of gold-silver-quartz veins. A specimen free from impurilies was...paper. REFINEMENT OF THE CRYSTAL STRUCTURE OF NACRITE Alice M. Blount, I. M. Threadgold and S. W. Bailey...Bailey 185 The crystal structure of nacrite from Pike's Peak district, Colorado, has been refined by least...the 8·9 A lateral repeat. This direction is X in nacrite, contrary to the usual convention for layer silicates |  | | Journal (issue) | | et le 9uartz Juillet Août 2005 de Berrien (Finistère) Gîtes minéraux n° 96: Saint-Bresson (Gard) Le...é Cubes: 3 mm Carrière de kaolin de Berrien ( Finistère) Coll. : C. Lucas REVUE BIMESTRIELLE PAR ABONNEMENT...Daniel GOL LE KAOLIN ET LE QUARTZ DE BERRIEN (FINISTÈRE) Murielle LE GALL, André CHASSIN, Jean-Paul de...l'abonnement annuel : 6 numéros + 1 hors série France: Individuel : 50 € - Association et soutien : 65...1 bis, rue du Piat, 43120 Monistrol-sur-Loire, France 0 Oui - je souhaite m'abonner au Règne Minéral |  | | Journal (article/letter/editorial) | | paragenesis of cookeite and hydromuscovite associated with gold at Ogofau, Carmarthenshire. (With Plate XIX.) By...reputed to be an ' ancient gold mine' dating back to Roman times. Though the mine is described as 'disused'...these surface workings have been exploited for free gold intermittently within the last fifty years, and...quartz, auriferous sulphides, and occasionally free gold. The last is frequently obtainable by panning crushed...free gold. These micaceous veinlets are of such frequent occurrence in the lower levels of the mine that |  | | Journal (article/letter/editorial) | | BEIDELLITE AND ASSOCIATED CLAYS FROM THE DeLAMAR MINE AND FLORIDA MOUNTAIN AREA, IDAHO J, L. POST,l B...Grass Valley, California 95945 2 De Lamar Silver Mine, PO Box 103, Jordan Valley, Oregon 97910 3 Swiss...rare specimen of beidellite from the Black Jack Mine, Florida Mountain, Idaho. A variety of aluminous...than 1.0% MgO and 0.5% 1O-A halloysite, dickite, nacrite, rectorite and Na20. Associated clays include beidellite...II beidellites from mines around the Black Jack Mine are given. The beidellites have an American Society |  | | Catalog/List | | tabular twinned crystal about 1cm size ( Telino Mine, Linopolis, Minas Gerais Brazil) £25 Na Be PO4 19...19. TITANITE variety "Greenovite" (Praboma Mine, St Marcel, Aosta Italy) pink vein about 3mm wide and...CUBANITE crystal section 5mm overall size (Henderson# 2 mine, 3250 level, Chibugamu, Quebec Canada) £12 24. CUPRIAN...Lokken Mine, Trondheim Norway 25. NATNE GOLD micro grains on quartz about 1cm £10 £7 (Gold Bluff Prospect...NATNE GOLD seven or eight micro spots on small quartz crystals, possibly some with faces. lxl Mine, Washoe |  | | Journal (article/letter/editorial) | | nomenclature Allevardite (rectorite), from Allevard, France: committee for 1996, 493 surface microtopography...study between halloysitic deposits from Perigord, France and Wallonie, 271 BELKACEM, S., 289 BEN HAJ AMARA...Spain), scopic study of the adsorption of rhoda507 mine 6G on aqueous suspensions, 97 signatures palaeoweathering...halloysite from hydrated nacrite, 453 Wallonie, Belgium and Perigord, France: a Differential thermal gravimetry...halloysitic cryptokarst deposits from Perigord, France compared to similar deposits from, 271 ERTUS, R |  | | Journal (article/letter/editorial) | | Université d’Orléans, BP 6749, F–45067 Orléans Cedex 2, France Abstract The Chouichiat peraluminous structure...to rocks altered by acidic fluid associated with gold-bearing epithermal ore deposits. Keywords: pyrophyllite...along the pyrophyllite structure to evaluate the gold content of the deposit. The surface samples were...microprobe in the BRGM–ISTO laboratory, Orléans, France (Table 2). The XRD analyses were carried out on...analysis indicates the presence of white mica and nacrite in small quantities in a single sample. Structural |  | | Journal (article/letter/editorial) | | commences with an article on the crystallization of gold, referring especially to Zei~schrif~ fiir Krystal]ographie...Hessenberg. This is a beautifully crystallized plate of gold ; the tabular crystals, well seen on the edge of...forms of the VSrilschpatak gold are produced. k star-like formation of gold, from Faczebagy, is also described...explanation of the aeicular and capillary forms of gold, some other specimens from Transylvania are described...the oetahedron. Among other notable crystals of gold some five-membered forms are described. These are |  | | Journal (issue) | | expensive operation. The common use of Cacn Stone from France at th is time is because of its excellent carving...appetites had been whetted. I.M. 18 November 1 994 Gold, by Alistair Baxter Our guest speaker is Head of...in him, one on the Indian Ocean and one 12 on gold. Having delivered the former to us three years ago...He began with some rough statistics. 35% of all gold goes into national reserves and most of the remainder...electronics industry for non-corrosive contacts. Gold is in fact not that rare, is very malleable and |  | | Journal (issue) | | silicates. Two of these minerals, dickite and nacrite, have the same formula as kaolinite, but conform...silicate. Below: A porcelain vase from Limoges (France). In addition to being easy to shape, kaolinite...(Czech Republic); Cornwall (England); Limoges (France); Bavaria and Saxony (Germany); Grosseto, Livorno... Above: The workings of an abandoned China clay mine on the island of Lipari, off the coast of Sicily...formations. Below: A porcelain vase from Limoges (France). Since the 16th century, this small town on the |  | | Journal (article/letter/editorial) | | Minerals, Vol. 44, No. 3, 357- 369, 1996. DICKITE, NACRITE AND POSSIBLE DICKITEINACRITE MIXED-LAYERS FROM...de Malaga (Spain) Abstract-Nacrite, dickite and intermediate dickite-nacrite phases have been identified...Malaguide Complex (Betic Cordilleras, Spain). Nacrite developed as euhedral, pseudohexagonal or elongated...occurred in the sandsto nes and veins similar to the nacrite, or accompanying dickite. The mineral assernblage...as can be deduced from the JC values. Dickite, nacrite and intermediate phases were studied by X-ray diffraction |  | | Journal (article/letter/editorial) | | ............................................ Nacrite, Dickite and Kaolinite: Andalusite, Sillimanite...4 Becker, G. F.: Natural solutions of cinnabar, gold and associated sulphides. Am. Jour. Sei., 33: x99...show little, if any, lossin the usualdeep-seated gold-quartztype of rock alteration, whichtheyshouldif...monzonite. 2. Sericitized quartz monzonite, Parrot mine 1,3oo-footlevel, 6 inchesfrom vein. 3. Altered quartz...quartz monzonite, Looo-foot level, Leonard mine, forms footwall of enargite vein. 4. Altered quartz |  | | Journal (article/letter/editorial) | | PENINSULA Wayne County International Salt C o . mine—Detroit Alpena County National G y p s u m C o... palygorskite, pyrite, quartz, sphalerite Spurr mine—Imperial Heights (near Michigamme) clinochlore var...selenite U . S . G y p s u m C o . quarry T a y l o r mine (and outcrops)—Alberta barite (r), goethite, graphite...pyrite Kent C o u n t y Grand Rapids Gypsum C o . mine—Wyoming Delta C o u n t y (old quarry east of...hematite, marcasite, pyrite, quartz Groveland mine Loretto mine—Loretto (near Monroe) calcite, celestite |  | | Catalog/List | | x i £5 Rich wh ite crusts on matrix. Rawhide Mine, Moh ave County, ½ x ½ Arizona, U.S.A £3 Kragero...Bastnas Mine Sweden Jx2 £6 2 x2 £1.20 2x2 £1 2 Ix ! £4 l x2 £8 New East Wheal Russell mine, Devon...Mine.Ravalli Co unty, Montana U.S.A Glomel. Brittany, France I x½ £2.50 l x2 6 0p variety YIRIDI NE (Mangan...Raphael. France 2x2 £3 2x3 £5 3x4 £8 l x2 £8 2x2 £ 16 2x3 £25 l x l £3 San Jose Mine, Oruro, Bolivia...Bolivia Benallt Mine,Lleyn ,Wales l x2 £1.5 0 6x6mm £3 Ix ! £5 lcm£4 Rich white to faint ly blue masses |  | | Book | | constituent from Attapulgus, Georgia and Mormoiron, France, attapulgite. This is a hydrous magnesium aluminum...T. Batchelor, a former manager of the Mt. Lyell Mine, Tasmania. The nnineral resembles pyrophyllite,...hydrated alumina from Beaux (or Baux) near Aries, France. The chemical analysis he obtained from this material...for a clay mineral first found as gouge clay in a mine mineral was first called leverrierite by Earson...the three varieties of kaolinite as: kaolinite, nacrite, and clayite. The term does not appear to have |  | | Book | | Garnierite (?) 1: 1 + Di.** Kaolinite, Dickite, Nacrite Al2Si2OS(OH), (B) Layer-ribbon-st ruct ure (1I)...90" lOO"20' 90" (Zvyagin, 1967) 8.89 14.6 5.14 Nacrite 90" 97"07' 90" (Shirozu and 28.89 9.225 5.349 Vermiculite...(IMA)). Among clay minerals, kaolinite, dickite and nacrite are known to represent polymorphs, and are now...monoclinic two-layer structure. The structure of nacrite (Hendricks, 1939) has been described as a primitive...Kaolinite is one-layer polytype and dickite and nacrite are two-layer polytypes. 11. LAYER-RIBBON-STRUCTURES |  | | Book | | Garnierite (?) 1: 1 + Di.** Kaolinite, Dickite, Nacrite Al2Si2OS(OH), (B) Layer-ribbon-st ruct ure (1I)...90" lOO"20' 90" (Zvyagin, 1967) 8.89 14.6 5.14 Nacrite 90" 97"07' 90" (Shirozu and 28.89 9.225 5.349 Vermiculite...(IMA)). Among clay minerals, kaolinite, dickite and nacrite are known to represent polymorphs, and are now...monoclinic two-layer structure. The structure of nacrite (Hendricks, 1939) has been described as a primitive...Kaolinite is one-layer polytype and dickite and nacrite are two-layer polytypes. 11. LAYER-RIBBON-STRUCTURES |
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Gold mine, Lopérec, Châteaulin, Finistère, Brittany, France