 | | Journal (article/letter/editorial) | | Syn-metamorphic gold mineralisation, Invincible Vein, NW Otago Schist, New Zealand R. Hay and D. Craw Geology Department...Department, University of Otago, P.O. Box 56, Dunedin, New Zealand Received: July 1, 1992 / Accepted:...Accepted: September 30, 1992 Abstract. The Invincible Vein fills a fault zone which strikes northeast and dips...Valley, NW Otago. The vein cuts north striking foliation in lower greenschist facies Otago Schist. Structures...significant source for rnineralising fluid and metals. Invincible mineralisation occurred in the latter stages |  | | Journal (article/letter/editorial) | | ductile-brittle shear zone, Macraes Mine, Otago Schist, New Zealand Received: 4 December 1997 / Accepted:...facies schist which hosts the Macraes Mine in East Otago, New Zealand has been pervasively altered by post-metamorphic...are locally enriched in rutile and hydrothermal graphite. Strain was then concentrated into narrow (m scale)...reduction and recrystallization of micas to form a new foliation. Muscovite has grown at the expense of...sulphides during reduction of the ĀÆuid by hydrothermal graphite. The whole altered rock sequence was later cut |  | | Journal (article/letter/editorial) | | evolution during metamorphism of the Otago Schist, New Zealand: (I) Evidence from fluid inclusions M...inclusion salinities from quartz veins in the Otago Schist, New Zealand, range from 1.0 to 7.3 wt% NaCl eq. in...Key words: fluid inclusions; metamorphic fluids; Otago Schist; salinity. I NTR O D U CT I O N The salinity...medium-grade metamorphic rocks from the Otago Schist, South Island, New Zealand, carried out in order to relate...setting. Previous fluid inclusion studies in the Otago Schist have mainly concentrated on Au- and W-mineralized |  | | Book | | ā¬ Kancy's Computo 6.5.96 THE HANDBOOK OF NEW ZEALAND MINES (WITI MAPS AND ILLUSTRATIONS). PART I...Menorian Cuthern Cara GENERAL GOVERNMENT OF NEW ZEALAND. LEGISLATURE . The Legislature is composed...the development of the mineral resources of New Zealand , I have for a long time thought that a great...Although I had been living eighteen years in New Zealand, I had never learned, nor even realized, that...to be found in the Middle and North Islands. In Otago and Westland there are large tracts of country |  | | Report (issue) | | deposit. Table 4, part B, gives an alphabetic list of mine and properties followed by the deposit name. CHARACTERISTICS...deposits used in Table 1 may represent a major mine, district name, or local town name or other prominent... Pyrrhotite appears to be been reported in just a single mine in the East Belt of the Sierra Nevada foothills...(Malcolm, 1912), galena was widely considered by mine operators to be correlated with better gold grades...was described in a carbonate quartz veinlet in one mine in the Mother Lode system (Knopf, 1929). Method |  | | Journal (issue) | | company continues to strategically diversify into new geographic markets and minerals. P4 30 18 22 24...WEST AFRICA P4 P8 Kouroussa Guineaās latest gold mine is up and running Cora Gold Ready to unlock Sanankoroās...asset taking shape 44 48 50 B2Goldās Fekola mine Ready to scale fresh heights Bankan Predictiveās...carats a year Lindi Jumbo Tanzaniaās first graphite mine firmly on track to production 54 56 60 Douta...development of local economies beyond life of mine Master class New WMI director brings mining and academia |  | | Report (issue) | | pure carbon. Polymorphism & Series: Chaoite, graphite, and lonsdaleite are polymorphs. Occurrence:...important deposits were in India, in the Golconda region, and near NaĢgpur and Bundelkhand. From the area...Kimberley, at the Finsch mine, near Postmasburg, Cape Province; from the Premier mine, near Pretoria, and...and the Venetia mine, Transvaal; about 150 diamondiferous pipes have been mined. From the Jwaneng and Orapa...In China, from pipes at the Wafangdian and Binhai mine, Liaoning Province; at Changma, near Mengyin, Shandong |  | | Journal (article/letter/editorial) | | into an active mountain belt; Alpine Schist, New Zealand G . R. T . J E N K I N , ' D. C R A W 2 A N D...Geology Department, University of Otago, PO Box 56, Dunedin, New Zealand ABSTRACT Calcite and quartz veins...actively rising Alpine Schist metamorphic belt of New Zealand. The fluids that deposited these minerals were...generated by oxidation of graphite. + + Key words: Alpine Fault, New Zealand; fluid inclusions; meteoric...post-metamorphic veins in the Alpine Schist belt (New Zealand). This belt provides an excellent area in which |  | | Book | | ofDiamonds Victor Argenzio DAVID McKAY COMPANY INC. NEW YORK Copyright Ā© 1977 by Victor Argenzio All...carbon. and comes the earth's natural elements graphite and diamonds. result The from the differences...structure. not require high pressure for is its Graphite does formation, and the atoms lie loosely in...in sheets that slide easily over each other. Graphite provides us with such things as lubricants and...between a given size will weigh twice that of graphite of the same more than size. Hardness The diamond |  | | Journal (article/letter/editorial) | | Gloaguen, and Bernard Giroux The Bathurst mining camp, New Brunswick: Data integration, geophysical modelling...Brunswick No. 6 volcanogenic massive sulphide deposits, New Brunswick, CanadaāGilles Bellefleur, Saeid Cheraghi...Travin 556 569 247 Vol. 485, No. 2, 2019 544 New data on the mineral composition of unique rhenium...deposit (south Urals, Russia): First application of a new geochronometerāO.V. Yakubovich, I.V. Vikentyev, and...sulfide ore in the Western Copper area, Morenci mine, ArizonaāBenjamin N. Schumer, Ralph J. Stegen, Mark |  | | Journal (article/letter/editorial) | | were acquired by dealers Jack Greenspan and David New over the last 20 years or so. Jack filtered his specimens...always carrying connotations of magic powers, invincible strength and the workings of strong, brazen gods...repeated by Pliny claimed that the diamondās āinvincible forceā can be ābrokenā only by applying to the...Hyderabad, and the only modern producing diamond mine in India exploits the Majhgawan lamproite pipe near...known as the Belgian Congo. Zaireās diamondiferous region lies near the Angolan border, where crystals are |  | | Book | | shell of rocks that now surrounds the core. This region became dominated by tl1e elements silicon and magnesium...diagram shows the main mineral-forming environments. New mountain system Low-pressure metamorphic rocks Igneous...minerals they contain. The other reason lies in the region that the magma reaches as it gets close to the...temperature and the chemistry of the volatile. As each new crystal forms, it takes some atoms from the mixture...Temperature and pressure are also so severe that new minerals begin to grow among the micas. Conspicuous |  | | Book | | Foundation https ://archive. org/detai Is/rocks mine rals0000 unse_v3c3 ' \ I ... AGOLDEN EXPLORING...built mostly of rock. Of course, if you live in a region of high mountains, you are almost sure to see great...mountain ranges have been worn down. At the same time, new land has been made from the rock refuse dumped into...though it is the second most common one, may be new to you. It is silicon. You can be sure that you have... is carbon in crystal form. "Diamond" means "invincible." Both ruby and sapphire are varieties of corundum |  | | | | surrounded ce ne white calcite, from!iheBluebell Mine; Riondel, Digitized by the Internet Archive...element. Gold, copper, silver, platinum, bismuth and graphite fall in this subdivision. Sulphides and arsenides:...description is not clear, e.g., submetallic, for graphite. Adamantine: brilliant, hard, durable, e.g., diamond...yellow), p. 50 chalcocite (dark grey), p. 34 | graphite (steel grey, black), p. 30 | stibnite (lead grey)...āSoft(Mohs 1-2) āBlack Hard (Mohs more than 51) graphite (black),p. 30 pyrolusite (grey to black), p. 82 |  | | Report (issue) | | sulfur mines in the United States and by opening new mines, by greater recovery of byproduct sulfur (in...decide whether a certain metalliferous deposit or district should be included or not. The problem was also...pyrites, and all other forms) since 1935 is reviewed. New sulfur mining and recovery projects in the United...Communist countries) are described; these will have new production of about 3,000,000 tons of sulfur by the...of sulfur during 1935-39 and 1950, and estimated new production are given in some detail; this information |  | | Book | | Gold, copper, si lver, platinum, bis1nutb and graphite fall in this subdivision. Sulph ides and aiĀ·senides:...pyrolusite (steel grey with bluish tint), p. 82 graphite (steel grey, black), p. 30 stibnite (lead grey)...Red-brown cinnabar (red), p. 96 12 . . .. . graphite (black), p. 30 pyrolusite (grey to black), p....countJy of hard, resistant rock cut by innu1nerable lakes and rivers, con1prises the core of the Continent...n1ark t]1e Interior Plains. 4 Below the lnnuitian Region lie the Arctic Lowlands. 5 Inside the Shield lie |  | | Book | | Books Ltd. PO. Box 1338, Ellicott Station Buffalo, New York 14205 66 Leek Crescent Richmond Hill, Ontario...destroyed in these changing conditions. In the process, new minerals and rocks are formed. RIGHT: Malachite...A CHANGING PLANET 11 Vanadinite, San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 cm Mineral Species...then subdivided layers at the bottom of rivers, lakes and oceans. Over time, the into groups and types... where particles are cemented together to form new rocks. These are form from the bodies of once-living |  | | Journal (issue) | | Acquisition SPECIAL REPORT P37 TECHNOLOGY Shaping the mine of the future Donāt let your future go up in smoke...Acquisition SPECIAL REPORT P37 TECHNOLOGY Shaping the mine of the future 24 FRONT COVER By constantly enhancing...timing for imminent mine start-up Lindi Jumbo Destined to make a big impact on the graphite market Caracal...Caracal Goldās Kilimapesa Kenyaās new mining player on the block has big aspirations Ionic Rare Earthsā Makuutu...wealth How do we ensure technology is embraced? New bulk explosives system optimises productivity Mining |  | | Journal (issue) | | DRCās next major copper discovery? Luanshimba: a new copper-cobalt discovery? Red Rock Resources makes... 58 Large FLSmidth Liquid energy Kamoa copper mine to benefit from hydropower. COMMODITY FOCUS: BASE...as it starts and fully commits to expanding its mine portfolio. THE MINING VALUE CHAIN: STEP 3: Process...responsibility needed to deal with water risks Tirupati Graphite chooses green energy in Madagascar Toxic water...ensuring that the taps donāt run dry ENHANCING MINE PERFORMANCE 94 Redefining mining ventilation 86 |  | | Book | | Penguin Books USA Inc., 375 Hudson Street, New York, New York 10014, USA Penguin Books Australia Ltd...(NZ) Ltd, 182-190 Wairau Road, Auckland 10, New Zealand Penguin Books Ltd, Registered Offices: Harmondsworth...chemical environment Metasomatism A process whereby new chemicals are introduced and original ones removed...It was not until the industrial revolution, when new methods of smelting were discovered that metals began...thousands of years before. At this rate, unless new resources can be found, supplies of some minerals |  | | Book | | chromian diopside crystals on large, well-formed grey graphite crystals, field of view 3 cm - Philip Hitge specimen...economic geology), American Museum of Natural History, New York, USA. CONTENTS Foreword 6 Preface 7 Introduction...countries are among the finest in the world. The region and its gems are particularly dear to my family...most renowned gemstones from East Africa, this region is also host to some of the world's finest examples...me great pleasure to introduce Bruce Cairncross' new book Minerals& Gemstones of EastAfrica, which is | | | Book | | Published in Canada by Firefly Books Ltd. Buffalo, New York Richmond Hill, Ontario Published in the United...destroyed in these changing conditions. In the process, new minerals and rocks are formed. RIGHT: Malachite...periods of stability PLANET | 114 San Carlos district, Chihuahua, Mexico * 8 x 4 x 2 om are uncommon...of rivers, lakes and oceans. Over time, the particles are cemented together to form new rocks, These...surface ā the sedimentary rocks recrystallize. A new type of material forms: metamorphic rock. If the | | | Book | | Rock and Mineral Oddities.24 Fire-born Rocks.26 New Rocks From Old.30 Rocks That Change.34 Underground...built mostly of rock. Of course, if you live in a region of high mountains, you are almost sure to see great...In that long, been worn down. At the same time, new long stretch of time, great changes have taken place...though it is the second most common one, may be new to you. It is silicon. You can be sure that you have... is carbon in crystal form. āDiamondā means āinvincible.ā Both ruby and sapĀ¬ phire are varieties of corundum |  | | Journal (issue) | | June, September & December ROCKHUNTER THE NEW ZEALAND LAPIDARY MAGAZINE Collecting - Lapidary -...THAMES - ORDER YOUR SUBSCRIPTION - Published NEW ZEALAND NOW three times a year - Please arrange in...ENCLOSED: D CHEQUE D POSTAL ORDER The Subscription D NEW D RENEWAL rates are as follows: SOUTH AFRICA:...placer to placer plus vein deposits, led to many new discoveries. During the early 19th Century, Russia...Australia (from c. 1850) and, later in the Century, new finds led to gold rushes in Alaska, the Canadian | | | Book | | Penguin Books USA Inc., 375 Hudson Street, New York, New York 10014, USA Penguin Books Australia Ltd...(NZ) Ltd, 182-190 Wairau Road, Auckiand 10, New Zealand Penguin Books Lid, Registered Offices: Harmondsworth...chemical environment Metasomatism A process whereby new chemicals are introduced and original ones removed...It was not until the industrial revolution, when new methods of smelting were discovered that metals began...thousands of years before. At this rate, unless new resources can be found, supplies of some minerals |
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