 | | Journal (article/letter/editorial) | | Tennant Creek occursin transgressive magnetite- and hematite-rich masseswithin a pile of felsic sedimentary...pyroclasticrocksof lower Proterozoicage. The magnetite-hematite bodies (locally referred to as ironstones)have...alteration extendvertically below the orebodies. The Juno mine is a small but extremely ric.h depositsituatedin...and ore minerals are vertically zoned within the Juno lode. Massive magnetite ( > 80%) and chlorite (<20%)...two years have been Aus- the zonationwithin the Juno lode indicatethat this hydrothermalreplacement tralia's |  | Zaw, Khin, Huston, D.L., Large, R.R., Mernagh, T., Hoffmann, C.F. (1994) Microthermometry and geochemistry of fluid inclusions from the Tennant Creek gold-copper deposits: implications for ore deposition and exploration. Mineralium Deposita, 29 (3) doi:10.1007/bf00206872 | Journal (article/letter/editorial) | | ellipsoidal, or lensoidal lodes of magnetite _+ hematite ironstones which are hosted in turbiditic sedimentary...Type II inclusions in mineralized ironstones (e.g. Juno, White Devil, Eldorado, TC8 and Gecko K-44 deposits)...III inclusions in the mineralized ironstones (e.g. Juno, White Devil, Eldorado, TC8 and Gecko K-44) indicates...Territory. Ten major deposits, including Gecko, Juno, Orlando, Peko, Warrego, Nobles Nob and Golden Forty...ellipsoidal or pipe-like bodies rich in magnetite and/or hematite. These bodies, locally termed "ironstones" are |  | | Journal (article/letter/editorial) | | structures. Hematite-magnetite-quartz-chlorite ironstone, including the Peko, Argo, Juno and Nobles Nob...gold-copper deposits, are spatially associated with hematite shale horizons occurring at three to four discrete...bismuth from large deposits such as Nobles Nob, Peko, Juno, Warrego and White Devil. The Tennant Creek goldfield...structure and stratigraphy difficult. Large massive hematite/ magnetite ± quartz ± chlorite ironstone, which...been advanced, particularly the association with hematite shale and occasionally with quartzfeldspar porphyry |  | | Journal (article/letter/editorial) | | HYDROTHERMAL CREEK GOLDFIELD, MINERALS AT THE JUNO MINE, CENTRAL A USTRALIA-• REPLY Sir: I was pleasedto...taken the analogya stepfurther by inferring that the Juno oresare not of replacementorigin and that their...concerningthe evidencefor a subsurface replacementorigin at Juno. In Figure 1 the crosscutting relationshipbetween...precipitatedfrom solutionsmovingupward and outwardthroughthe Juno structure. I can only infer from Dunn's discussionthat...:::::::::::8::: FIG. 1. Geologicalcross section725E of Juno no. 2 orebody showingrelationshipsbetween beddingin |  | | Journal (article/letter/editorial) | | deposits, to hematite-rich high-grade Au (oxidized) deposits. Discordant magnetite-hematite-chlorite-quartz...interpreted to have involved mixing of an oxidizing (hematite-stable) Ca-Na-Cl brine with an intermediate-fO2...shaped bodies of hydrothermal magnetite and/or hematite-quartz-chlorite ± talc ± carbonate. (4) The major...and Fe-Mg silicates such as chlorite, magnetite, hematite or pyrrhotite, carbonates, and quartz. (5) Some...zoned: footwall stockwork zones of magnetite ± hematite-quartz-chlorite veins pass upward through 1167 |  | | Journal (article/letter/editorial) | | The oxidestage involvedprecipitationof magnetite,hematite,quartz, and chlorite;this stagewas subsequentlyfoliated...well-zoned, Au-rich (e.g., Juno and White Devil) and weaklyzonedchalcopyrite-hematite-rich (e.g.,Gecko)deposits...thehematite-pyrite join and then followedthe hematite-pyritejoin toward the hematite-pyrite-magnetite triple point....hematitefield, but chalcopyrite precipitatedonlyalongthe hematite-pyritejoin, whichaccountsfor metalzonationin wellzoned...In chalcopyrite-hematite-rich deposits,fluid evolutionwas restrictedto the hematite-pyrite join, and |  | | Journal (issue) | | Agency (ESA) and AOES Medialab 6 Our Adventure With Juno 9 Out of This World Books A few months ago, renowned...young protégé still in high school on the upcoming Juno mission to Jupiter. Written as a dialogue between...talented high school student in one small aspect of it. Juno is the name of a mission that is part of NASA’s...program. In Roman mythol- THE PLANETARY REPORT ogy, Juno was both wife and sister of the god Jupiter. The...giant planet itself remains largely unexplored. Now Juno, a mission that’s been in planning stages for years |  | | Journal (article/letter/editorial) | | fluids as indicated by bornite, or by barite or hematite gangue, and relatively acid fluids as indicated...iron mineral equilibria, but is greatest in the hematite, magnetite and pyrite fields at high temperatures...from the field of pyrite stability to that of hematite stability. Oxidation of hydrothermal fluids by...of massive mineralisation occur at the Rosebery Mine: ( 1 ) basal pyrite-chalcopyrite massive sulphide...geology on section 1113 mN in the north-end of the mine. Gold concentrates in the upper parts of sphalerite-galena-pyrite |  | | Journal (article/letter/editorial) | | chemical controls on ironstone formation, such as hematite-rich layers in the stratigraphy, rather than direct...Creek goldfield is characterised by large massive hematite/magnetite + quartz + chlorite "ironstones" which...bismuth ores, such as the Warrego, Gecko, Peko, Juno, Nobles Nob and White Devil deposits. The ironstones...stratigraphic interval containing a number of hematite shales (Ivanac 1954) which act as redox triggers...Springs ake Surprise Fault ~OlCle~ -~', : "~ [ .~.Juno.... "7 ~t ....... 9-- ... _ ~ les Nob ! r,~ " |  | | Journal (article/letter/editorial) | | these zones biotite is replaced by muscovite and hematite, and plagioclase and K-feldspar have a cloudy...These have been microclinized and dusted with fine hematite. Mineralization: temperatures o f formation. Temperatures...occurrences of minerals from this series include Juno Mine, Tennant Creek, Australia (notable for krupkaite;...related seleniferous bismuth sulphosalts from Juno Mine, Northern Territory, Australia. Econ. Geol., 70...crystal structure of krupkaite, CuPbBi3S6, from the Juno Mine at Tennant Creek, Northern Territory, Australia |  | | Journal (article/letter/editorial) | | Cu-Aumagnetite + hematite types formed at relatively high temperature (300-450~ and Cu-U + Au-hematite types formed...the deposits are associated with magnetite or hematite rather than iron sulphides. It is emerging that...1). In seventeen of the examples magnetite or hematite are the dominant Febearing phases in equilibrium...numerous dyke-like breccia bodies in fractured, hematite-sericite-altered Roxby Downs Granite, below chaotically...centre of the complex, and are divided into hematite, hematite-quartz, and heterolithic breccias by Reeve |  | | Journal (article/letter/editorial) | | Lamprophyre dyke Wundirgi Formation - gneiss 7 8 9 10 11 Juno deposit Argo deposit Peko deposit Nobles Nob deposit...variably composed of iron oxide (magnetite and/or hematite), quartz and chlorite, with 611 minor amounts...suggested that the mineralization at the White Devil mine developed during a subsequent deformation (D2) to...Devil ore White Devil ore Barren ironstone Juno ore Juno ore Argo ore TC8ore Peko ore Nobles Nob ore...mineralization-related muscovite were obtained from the Juno (92-555, 92-556) and Nobles Nob (92-560, 92-561) |  | | Journal (article/letter/editorial) | | mineralisation at Tennant Creek is hosted by magnetite/hematite lodes (ironstones) which occur within tightly...host sediments, which include relatively Fe-rich hematite shale horizons, represent an ideal source of Fe...Fe to account for the iron oxide content of the Juno deposit. Low-level (0.1 ppb detection limit) Au...greywackes, fine grained sedimentary rocks and hematite shales) are shown in frequency histograms (Fig...necessary to leach to provide the Au found in the Juno deposit. 35 9 30 Porphyries Granites 25 o c |  | | Journal (article/letter/editorial) | | Figure 1 (top left). Calcite, 5.5 cm high, Elmwood mine, Smith County. Terry Huizing specimen, Jeff Scovil...Figure 2 (above). Fluorite, 13.1 cm wide, Elmwood mine, Smith County. Francis Benjamin specimen, Jeff Scovil...Figure 3 (left). Fluorite, 2.5 cm on edge, Elmwood mine, Carthage, Smith County. Terry Huizing specimen...specimen and photo. Figure 4 (right). Cumberland mine, Smith County. Travis Paris photo (2004). Figure 5 (far...barite specimens at the Elmwood zinc mine in middle Tennessee. This mine, opened in 1975, and other nearby |  | | Journal (article/letter/editorial) | | hematiteq- pyrlte sediment py-sp barite Cyprus hematite-pyrite mudstone py-sp-cpy ga-sp-py-barite py-cpyq-...Massivesulfidebodies,particularlythoseenclosed ga--galena, hem--hematite, mag--magnetite, po--pyrrhotite, witlainfelsicvolcanic...mineralprecipitation or paragenesis. HowZonation at Orchan mine, Mata!7a•ni, Quebec ever,dueto theeffectsof low-to...manner Derbikov and Nurav'yeva zinc-rich Orchan mine, which containsabout 5 mil(1967) proposethat symmetric...Influence of fo_,,pH, and ZS on the solubility of hematite, magnetite, pyrite, and pyrrhotite in a 1 1I NaC1 |  | | Journal (article/letter/editorial) | | University of Hamburg, Hamburg, Federal Republic of Germany With 4 Figures Received July 3, 1992; Accepted...quartz-pyrite-chalcopyrite with Bi-sulphosalts; 2. quartz-hematite-chlorite with gold; 3. quartz-galena-sphalerite;...parageneses. The "early" gold is Ag-poor and related to hematite, while the "late" one is Ag-rich and closely associated...veins with various frequency. Major minerals are hematite, thuringite, gold and quartz, and the minor ones... 107 ii m m Bismut hlnit¢ Bi- sutphosaltsl Hematite Thuringite Gold Galena Sphalerite II m m m |  | | Book (edition) | | the result, of prospecting nt the Turner emernld mine near Shelby, N. C. The qunlity of some of the gems...probably equals that of South American emernlds. The mine hns been purchosed by New York men, who expect to...Aqunmnrine was found during 1910 at the "Beryl Hill" mine, near Royalston, :Mass. No sys~ematic mining w::is...that prospecting was continued at the "Beryl Hill" mine (during 1911) and a number of beautifol beryl crystals...found by a Tmk in what is known ~s a "primitive mine," at a depth of 5 or 6 meters. It was transported |  | | Journal (article/letter/editorial) | | northern edge of the shear zone, is similar to the Juno deposit (Large 1975) in which Au, Bi and minor Cu...White Devil: (1) thin (0.5-2 m), tabular magnetite-hematite ironstones along the southern extent of intense...shear zone, and (3) a lensoidal massive magnetite-hematite ironstone (Fig. 2). Two types of Au-Cu-Bi ore...300RL WHITE DEVIL MINE '50RL ~50RL MAINZONE OREBODY Massive magnetite • hematite & chlorite C - Magnetite...green biotite and chlorite. The opaque phase is hematite c o m m o n l y moderately chloritized (Fig. |  | | Journal (article/letter/editorial) | | been mined from hydrothermal magnetite- and/or hematite-rich ironstone bodies. Less well known is a style...in late-stage AL chalcopyrite-bearing quartz-hematite veins and within earlier-formed sheared chloritic...that are typically hosted by magnetite- and/or hematite-rich hydrothermal bodies locally known as ironstones...sandstones), siltstone, terrigenous mudstone, and hematite-rich banded argillaceous units (known locally...generally accepted that the magnetite- and/or hematite-rich ironstones formed during the D1 Tennant Event |  | | Journal (article/letter/editorial) | | deferrification, while the Georgia kaolins are coated with a hematite- or goethitelike phase, which is not removed by...the kaolins were examined. Key Words--Goethite, Hematite, Iron, Kaolin, Lepidocrocite. INTRODUCTION Previous...heat treatment on all similar kaolins. In samples Mine 15 and Avant no change in resonance F~ was observed...not collapse completely. In contrast, for samples Mine 24 and Blackpool, the effect of heating at 200~...ESR spectra (recorded at room temperature) of: a) Mine 24 kaolin heated at 400~ for 1 hr; b) Blackpool |  | | Report (issue) | | white areas). Sample is from the Buckskin National Mine, Humboldt County, Nevada. Photograph by Peter Vikre...............................................Q26 Mine Waste Characteristics.............................1989). The total U.S. supply was always higher than mine production during this period, with a high of 831...as indicated in fig Q3.) The difference between mine production and total supply was owing to the refineries’...of selenium-rich high-grade ores from the Horne Mine at Noranda, Quebec, Canada; by 1950, Canada’s production |  | | Journal (article/letter/editorial) | | 1910). At one time, jasper was mined at the Parrot mine (Chittenden Co.) on a small scale for use in colorful...harmotome/phillipsite hastingsite heazelwoodite hematite heulandite hornblende? humite? ilmenite jimthompsonite*...goethite, hematite, kaolinite, limonite, wad. Bennington County Bennington manganese mine in Bennington:...bornite, chalcopyrite, chrysocolla, dolomite, hematite, jasper, malachite. Route 9 road cut in Colchester:...Berkshire manganese prospect in Berkshire: calcite, hematite, pyrolusite, rhodonite. Black Creek locality in |  | | Book (edition) | | Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]•6HzO...Harding Co .. South Dakota. and at the Fuemrole No2 mine, Emery co .. Utah. Also at Menzenschwand Scbwarzwald...the Sailauf quarry, Spessart Mts., Bavaria. both Germany, and from the Rabejac deposit, Herault dept.. France... = = = = = Acanthite, x 16 mm, Freiberg, Germany, H Abernathyite, 12 mm, Ririera/, France, H Abhurite |  | | Journal (issue) | | unique. Some samples that intrigue me include Cancun, Juno Beach in Florida, Bermuda, and the Big Island of...sand feels like sifted flour. MARCH 2021 11 Juno Beach in Florida: The main chemical composition...has received thirteen packages of minerals from Germany that had been lost in the mail since November 2020...epidote from Mali, a dioptase from the Congo, hematite from Morocco, siderite from France, goethite from...Creek Arkansas, barite on fluorite from the Minerva mine in Illinois, fluorite from Baluchistan, Gallego |  | | Journal (article/letter/editorial) | | occurs in dry weather on the waste piles of a coal mine in the LvovVolynsk basin, identical with the synthetic...lining cavities at the Bambollita (---- La Oriental) mine, Sierra La Huerta, Moctezuma, Sonora, Mexico, have...quartz and hydrocarbons in limestone at the Carlin mine, Eureka County, Nevada, have space group R3, a 12...aggregates about o.I mm across from the Carr Boyd mine, Western Australia, have composition 906 TWENTY-NINTH...powder in samples of quartzite from an abandoned gold mine at Challant St. Anselme, Valle d'Ayas, Aosta, Italy |
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