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| Depositsof the La CrouzilleDistrict(WesternMassifCentral,France)' GeologicandFluid InclusionStudies JACQUES LEROY...subjectof this study (Margnac and Fanay mines) are locatedin the Saint-Sylvestregranitic plutoniccomplex,...Limoges(Haute-Vienne). The Saint-Syh'estreplutonin its entirety and the Saint-Sylvestregranite in particular...observationsmade in the mines along the contact zone betweenthe Brame and Saint-Sylvestregranites (Peny... The existence of two graniticfacies(Brame and Saint-Sylvestre)is dueto magmatic anddeutericprocesses |
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| 1985, 1987) as well as apparent buffering of C O z - H z O devolatilisation reactions (e.g. Ferry 1986)...and McKenzie 1987), cooq~ oJo~0 V: p~Ka(1-q~)+~o ~ p ~ e P: (q) small) (1) P: where p~ is solid...Biotite granite Biotite granodiorite Fault 6N [ 0 Pic de la Journalade J Col d Rourte ooooooooo Limit...= 0.7154 • 14 MSWD = ,,t,,~,O~/ . , , ,o~ y 629 . / ~/ -c /./t o ,4o + . § 2 4 7 §247247247247247247...than the equivalent low grade protoliths with 6 is O values between + 14 to + 15. Higher grade carbonate |
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| Coste A. (Limousin, France), Cuney M. (granites, France), Dardel J.RM. (France), Ewers G. (Pine Creek...Albitized sediments .................. . 69 Type 3 Vein ................................... . Subtype 3...and structure fill .... . . . . . 4.7 Type 7 Quartz-pebble Conglomerate (Lower Proterozoic) . . . ...Alaskite ........................... . Subtype 9.2 Quartz monzonite (Cu-porphyry) ...... . Subtype 9.3 Carbonatite........................... 137 5.2 Examples of Vein-Type Uranium Deposits (Type 3, Chap. 4) ....... |
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| waslessthanP(lithostatic).In constrast, mostof thewhite vein quartzformedunderconditionsof P(fluid) greateror...greateror equalto P(lithostatic).Veinsaredominatedby quartz, but locally they are characterizedby abundant(>50-6Vo)...chemistry (including REE) of vein minerals suggeststhat the chemistry of the vein-forming fluid changedduring...r6sultatsd'une 6tudede la paragenbse et de la chimie des min6rauxdes veinesaurifbresdu gisement m6sothermalde...concordantes au litage desrocheshOtes,et caract6ris6es de quartz rubannd.ks veines discordantesoccupentun volume |
 | | Catalog/List |
| □ ens . .L4.25. ,pure Accocpanied by intcrforrn o! bladed 4. ACT1;;01I'rE. Lcvant Zawn,':'rewellard...large tabular xtl □ asses with interstitial glassy Quartz. (Radioactive). 3~2x2", .L10.00. 8. AMBLYGONITE...my-white cleavage fragments o! massive crystalline material. A r&re nuo-phoaphate o! aluminium anå lithium...rhombic xtls of biscuite-colour. 2!-x2x1", .c12.;o. 16. ANTIMONITE. Felsobanya,Rumania. Two very pleasant...3x2x1½", ls10.00. 21. APATITE. Snaru.m,Norway. A pile o! semi-transparent ,sky-blue to creamy white,doubly |
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| □ ens . .L4.25. ,pure Accocpanied by intcrforrn o! bladed 4. ACT1;;01I'rE. Lcvant Zawn,':'rewellard...large tabular xtl □ asses with interstitial glassy Quartz. (Radioactive). 3~2x2", .L10.00. 8. AMBLYGONITE...my-white cleavage fragments o! massive crystalline material. A r&re nuo-phoaphate o! aluminium anå lithium...rhombic xtls of biscuite-colour. 2!-x2x1", .c12.;o. 16. ANTIMONITE. Felsobanya,Rumania. Two very pleasant...3x2x1½", ls10.00. 21. APATITE. Snaru.m,Norway. A pile o! semi-transparent ,sky-blue to creamy white,doubly |
 | | Journal (article/letter/editorial) |
| metamorphic Geol., 2000, 18, 607–624 Fluid generation, vein formation and the degree of fluid–rock interaction...terranes: the Schistes Lustrés, Alpine Corsica, France I . C A R T W R I G H T 1 AN D I . S . B UI C K...Australia ABSTRACT Centimetre- to decimetre-wide quartz+calcite veins in schistes lustrés from Alpine...other rocks on Corsica. These data suggest that the vein-forming fluids were derived from the schistes lustrés...calcite bearing only within 1–20 cm of the veins. The vein-forming fluids may have been preferentially derived |
 | | Report (issue) |
| (CREGU) M Cuney B Poty (Joint project leaders, France) A Bourguignon M Brouand M Friedrich B Guineberteau...Geochemistry Series r· NCGDC • ��CH�VIE COPV ID)(� �(O)T �EMOVlE Granites, metallogeny, lineaments and rock-fluid...1EU 11'• 0 I 7 9 3 -4 I 1500 Telex 444293 ENVRF. o Fax 01793-411501 .I Printed in England for the British...and AJ W McDonald 3 1 The Western Marche granite, France 3.3 J L Vigneresse and M Cuney 54 The Fichtelgebirge...Hercynides or Caledonides had no knowledge of the g e o logical setting or geochemical characteristics of |
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| of some countries, production trends, a nd possib le future developments are discussed in the text where...and Quartz Mica. Mica and feldspar in the United States. Feldspar and nephe/ine syenite. Quartz. Kyanile...who seized mines rather than discovered and explored them, and thus production from the mines, commonly...areas of Porcupine and Kirkland Lake, Ontario. G o ld has always been a lure which took men i11to the...has always been greater than that o f a11y other mineral product. H o wever, the i11f/11e11ce of gold has |
 | | Report (issue) |
| t Hornblendite sill s . Age of the quartz- mic a schis t , quartz it e , gne i ss a nd r elat ed rocks...JJode s . Fissur e v eins . Elk City vein ~yste Buffalo Rump vein system . Othe r ve ins . . . . . . ...Or e deposits--continued . Lode s--cont i nued , Vein s parallel to bedding Dissemi nated deposits • •...stream t ype Practical a_·p licati ons • . The mines • • . • • • Elk City distri ct Lode m i ~es . ....Gnome (Inter. at i0nal ) • • • • • Homest· 'o th Hil l • • • • Pets i te (Knob Hi U ) • • • • • |
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| Bearss, and myself) decided to visit the old Lion mines on Lion Mountai n located west-southwest of Jackson...We got some neat garnets from Asbestos and Mont Saint Hilaire oddities here, and they had vesuvianite...gentleman named Glenn Archer from Western Australia who mines the gaspeite (nickel carbonate). We talked a little...numbers in the abandoned cop- Marc-h 2001 per mines of Upper Michigan.) The general consensus was that...Let 's start with the notorious Mathias Rheinlander o f Mikon. As usual. his room was filled wi1h nice, |
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| Paris 7, 4 place Jussieu, 75252 Paris cedex 05, France ( Received Feberuary 15, 1993: revised and accepted...sub-forearc depths (20 to 50+ 10 km), where tectonic vein arrays, localized thrust faults, serpentine diapirs...Terrigenous sediments (rocks composed mainly of quartz, feldspars and micas; Garrels and MacKenzie, 1971...00(~D • O -30 I I ~ CO]Vein • ] Uylonite O ~ LOIN strain rock [] L_ , I \\'o [] ] Chenaillet...Chenaillet . . . . . . . . . . Undeformed vein Delormeclvein @ -8 (D o E I- -12 -16 -20 120 160 200 |
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| have been dropped in the translation. Lode and vein have been discriminated, as done by Emmons. ...Bergingenieur H. Oehmichen, der mir bie der Ausarbeitung des Abschnittes iiber die Siebenbiirgischen und Banater...Entgegenkommen So wiinsche gebe sie bei der Ausstattung des Buches. denn dieser Arbeit eine nachsichtige Beurtheilung...Erzlagerstattenforschung zu berucksichtigefl r ; Die Anordnung des Stoffes musste mehrf ach in Folge besserer Erkenntk'...weitschichtige Material zu bewaltigen. den Umfang des Buches trotz der starken Erweiterung seines Inhaltes |
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| INTRODUCTI THE GEOLOGY AND CHEMISTRY OF MINERALS OF THE W O RLD by CHARLES A . SORRELL Professor of Ceramic Engineering...(for accurately measuring angles between faces of o mineral ' s crystals). During that century most of...alivines, pyroxenes, amphiboles, micas, feldspars, and quartz-account for over 90 percent of all igneous rocks...crystallize are potassium feldspar, muscovite mica, and quartz, the major constituents of granite. Finally, water...(Intermediate) ' ~· ( -· , ,. ~ Gobbro (Bo sic) Quartz Muscovite Mica K Feldspar Na Feldspar Pyrox |
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| Rocky Mountains, Canada R. P. Shaw ~, R. D. M o r t o n ~, J. Gray 2, and H. R. Krouse 3 1Geology Department...stable isotope geochemistry of native gold-bearing quartz veins contained within low-grade metasedimentary...geochemical studies. Vein pyrite 634S values cluster between + 14.2 and + 16.3%o(CDT). Coeval galenas...galenas exhibit 634S values between + 11.4 and 13.3%o. Pyrite-galena geothermometry reveals a mean temperature...for the vein pyrites, with values for pyrite porphyroblasts in country rocks suggests that vein sulfur |
 | | Journal (article/letter/editorial) |
| gneisses,which are essentiallychloritic and graphitic quartz-feldspar-micagneissescontaining more or less disseminatedpyrite...concernedhimselfprimarily with the origin of the pyrite deposits. Martin (15) describedthe pyrite depositsof the Cantonquadrangle...reportsby Buddington (3), Cushing andNewland(5), Martin (15), andDale (6) arehelpfulin orientingoneselfto...JOHN JAMES PRUCHA Thickness Southeast Biotitic quartz-microdine Marble Northwest gneiss in feet ...pyritic schists and feldspathic gneisses 4.000 Quartz-biotite gneiss, largely migmatitic, with occasional |
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| poly.morph of graphite and diamond. The minerals quartz , cristobalite, citrine, amethyst, and tridymite...talc gypsum calcite fluorite apatite orthoclase quartz topaz corundum diamond fingernail: rubbing fingernail:...are even harder and will scratch to hardness 6. Quartz, Mohs' hardness 7, will visibly scratch window...weight of the same volume of water. For instance, quartz with a density of 2.65 is 2.65 times as heavy as...rock-forn1ing minerals that make up sand such as quartz and feldspar. This is the principle of panning |
 | | Journal (article/letter/editorial) |
| vacaba-RuizandThompson,1988) andonly the relNif•o vein (Simmonset al., 1988), one of the silver- evant...(<3 wt agesand low lying hills (e.g., Cerro Proa•o, Cerro % NaC1equiv).In addition,the fluid inclusionevi-...volcanic units now remain 1582 STUART F. SIMMONS o L•...." •,' • r] Lu•,•- b• .. -•:?'•.•-., • •_...the summit of Cerro O•risto. I• the right middleground,the conical-shaped Cerro Proa•o m•ks the center of...Valdeca• formsthe horizonon the le•. The impoundment in the foregroundoccupiesthe O•ilitos A•oyo. m thick. They |
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| Siltstone i[• -]Spear Siltstone • • • =• UrquhartShale/ O•i•U---• trace of Pb-Zn •=• •.111.! Native Bee Siltstone...Judenan Quartzite z• •=r• Western _z., Greenstone ,, o• STRUCTURAL Myally Subgroup Eastern Creek Volcanics...within the lead-zinc orebodies(Valenta, 1994). Quartz-dolomiteveinsformedparallel to bedding,parallelto...ization provide further constraintson the detailed mines,thecoppergradeincreases in the stratigraphitimingandsmall-scale... Cu MINERALIZATION, HILTON MINE, MT. ISA 1037 Vein mineralization l•c. 5. Chalcopyrite in sulfide-rich |
 | | Journal (article/letter/editorial) |
| immediatevicinity have beenmappedby the Provincial Bureau of Mines as "crystalline limestoneand calc schisttogetherwith...Ontario, Eleventh Report of the Ontario Bureau of Mines, •9o2. 682 Downloaded from http://pubs.geoscienceworld...possiblypyrite) in the immediate vicinity of the vein walls. Under the microscopeit is found to consistchiefly...consistchiefly of fine grained granulitic quartz with minute lamell•e of muscoviteand biotite in alternate...muscovite-bearinglayers being much the PLAN LEAD OF VEIN NEAR BANNOCKBURN, •ASTINGS CO.,ONTARIO, BY J. |
 | | Report (issue) |
| Francisco] REPORT XV OF THE STATE MINERALOGIST Mines and Mineral Resources OF PORTIONS OF CALIFORNIA...Minerals of the Ores Amount 11 12 of Ore 14 14 Mines The Curtz Claims The Hercules Company 14 23 Silver...Pegmatite dikes Quartz veins Deposits in limestone and other Paleozoic or Mesozoic sediments Quartz veins —...Replacement deposits Contact veins Tertiary deposits Quartz veins Gold and copper ores along contacts Sedimentary...58 58 58 5S 59 59 59 59 6u . Descriptions of Mines Antimony Borax Copper 62 ^4 74 --- Dolomite |
 | | Report (volume) |
| to be publi hed later in more d tail d form. The o pap r arc u h only a have a direct conomic b arino-...aching plant was built at Good SprinO". to treat the o 'idiz d copper ores, but, the process provinO" a fa... th gold and platinum content of the ore been re o...omitted on o. 1, but U1e sample contains 1 or 2 ounces of this metal. A little iridium is pr ent in o. 2. ...of the known distribution of platinum in vein , the Bo vein is one of the few primary deposits in which |
 | | Report (issue) |
| BARIUM DEPOSITS • 1N ENGLAND & WALES • BARYTES I o WITHERITE 0 Ntwc�: e .�--� ��•�1 •• • • Appl(lby+...···········..···•·····..········--··--·...,......o.....................,............,..................Alston }1Ioor ( Cumberland) and 1·1est Allena.o..le (1,rort11111nbcrl2..nd) ...................... 2L...················ 64 B. Lc.. nchestcr and Chester-le -Street arec"..S ..................................Stainmore .................................. 72 cnsleydo..le ro..ledalo nnd 8' .. ,� r ...................... |
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| LANDAIS CREGU, BP 23 F-5450I Vandoeuvre les Nancy, France ISBN 978-3-642-85806-2 (eBook) ISBN 978-3-642-85808-6................ 287 Parage netic Relationships of Vein Pyrobitumen in the Panel Mine, Elliot Lake Uranium...with Precipitation of Sulphides in Carbonate-Hosted Vein Mineralization, North Greenland V.H. Jakobsen and...particularly concentrated. Bitumens in hydrothermal vein systems can be enriched with the same metals that...SHUNGITE - - - Weathered Bitumen tfJ!?: .' 0 o 0 .05 0 .10 0 .15 0 .20 0 .25 ATOM IC OIC RATIO |
 | | Journal (article/letter/editorial) |
| Complex and 10.7 _+1~ in the Jabal Sayid Complex. Quartz-albite fractionations of 0.5 to 1.5% 0 signify...with numerous quartz-fluorite veins. Petrographically, typical rocks consist of large quartz grains, almost...pure albite (CaO, 043.02; K20, 0.044).19 wt.%) and quartz. The main accessory minerals are zircon, allanite...LOCATION 28" BOUNDARIES FIELOS SHONKINITE PROVENCE i 26 ~ ! t-f 24 ~ L~ '.':-;~h 'L 1 / i...ilmenite and hematite are always present. Massive quartz fluorite veins occur. Oxygen Isotope Relations |
