AUSGEO News no64 Geoscience Australia
In addition to the decline in exploration mineral deposits are becoming harder to find Gold Australia 39s gold mining industry has grown enormously in recent years It is now Australia 39s fourth most valuable commodity export Exploration and mining Indonesia Singapore the Philippines Canada New Zealand
geology structure and timing of gold mineralization at the na
where quotore zone andesite quot and granodiorite dikes occurred together with quotcomposite quot veins A second synthesis of the mine geology was attempted by Clark 1963 who assembled a nonhwestsoutheast composite crosssection based on selected diamond driU holes loed in the vicinity of the discovery outcrop see
Fermor Meeting 2017 Factory Earth Abstract Book The Geological
Sep 27 2017 15 00 Hydrothermal Alteration and Gold Mineralization in Talang Santo Deposit Lampung Province Indonesia Yudai Hirano Kyushu University Japan Institute Technology of Bandung Indonesia 15 20 Matthew Loader Royal School of Mines Imperial College London UK Natural History
01 Bhakti cdr Jurnal Geologi dan Sumberdaya Mineral
Formation were intruded by Late Miocene granite granodiorite diorite and andesite resulted in hydrothermal alteration and mineralization The identified hydrothermal alteration includes chlorite zeolite kaolinite jasper and silica Ores deposits are represented by iron ore manganese gold base metal and iron sands
References Geological Society London Memoirs
approach to exploration for hard rock and alluvial gold in Indonesia In Proceedings of the basaltandesitedacite suite from Rinjani volcano Lombok The geology of southern Sumatra and its bearing on the occurrence of mineral deposits Bulletin Geological Research and Development Centre Bandung 12 15 30
Labradorite Labradorite mineral information and data Mindat
Stevens B P J 1972 Mine Data Sheets to accompany Metallogenic Map Bathurst 1 250 000 Sheet Department of Mines Geological Survey of New South Wales The Mineralogy Geology and Exploration Geochemistry of the Paddington Gold Mine Broad Arrow Western Australia Faculty of Engineering UNSW 1989
The chlorite proximitor A new tool for detecting porphyry ore deposits
Here we present microprobe and laser ablation inductivelycoupled plasma mass spectrometry LAICPMS analyses of chlorite from the propylitic alteration halo of the giant Batu Hijau porphyry copper–gold deposit in Indonesia The results represent a breakthrough for exploration because they show that the chemistry of
characteristics of highsulfidation epithermal deposits and their
The terms enargitegold Main geological characteristics of 14 selected highsulfidation epithermal deposits Deposit district loion Motomboto Indonesia Nalesbitan Philippines Lepanto Abbrev at ons usea w calcalkaline MS massive silica VS vuggy silica ands andesitic bre breccta 5nL2rf£ck 39stk
Monitoring ore loss and dilution for minetomill integration in deep
PAPERS MINING BUSINESS OPTIMIZATION CONFERENCE Monitoring ore loss and dilution for minetomill integration in deep gold mines A surveybased investigation L Xingwana Sibanye Gold Welkom South Africa SYNOPSIS The purpose of this study is to understand how ore loss and dilution affect the mine
iv borneo Bibliography of Indonesia Geology
Andesitic and dacitic volcanics host several gold deposits in Kutai Basin Kelian Muyup and Barito basin Masupa Ria all low sulphidation epithermal types Abidin H Z 1998 Mineralization and alteration of the Kelian gold deposit East Kalimantan J Geologi Sumberdaya Mineral 8 76 p 210 Kelian gold deposit in
STRUCTURAL ANALYSIS AND RECONSTRUCTION OF THE
Southeast ore bodies in the southern part of the Pumpkin Hollow deposit using data from core logs preexisting normal faulting Pumpkin Hollow is an ironoxidecoppergold IOCG deposit that is hosted by Triassic tuff of the Western Nevada Mine contains rhyolitic and andesitic tuffaceous rocks This unit is not as
Spectral characteristics of propylitic alteration minerals as a
surrounding the Batu Hijau Cu Au porphyry deposit in Indonesia where previous work has identified systematic mining Batu Hijau contained an estimated 1644 Mt of ore with copper and gold grades of 0 44 and 0 35 g t andesites and andesite porphyries quartz diorites and porphyritic tonalites Garwin 2002
13th International Mine Water Association Congress – Mine IMWA
Jun 25 2017 Landform – A Case Study at Martabe Gold Mine Indonesia 610 Biofouling of reverse osmosis membranes in a process water treatment system in a gold mine 1119 Treatment of historical peatbased sorption media and zeolitecontaining andesite in relation to Chilean mine waters are presented
Mineral Commodity Report 14 Gold
South Dakota in 1876 and the gold telluride deposits of Cripple Creek in Colorado in 1892 Likewise in In Russia gold mining commenced several thousand years ago in many of Russia 39s rich placer deposits in Indonesia Santa Rosa El Toro and Igor in Peru and Yata and Getang in Guizhou Province China
Queensland 39s metalliferous and industrial minerals Department of
While all care has been taken in the preparation of this document neither DNRM nor its officers or staff accept any Northwest Queensland silver and base metals projects at feasibility or advanced exploration stage Table 1 Queensland 39s base metal and gold mine production 2015–16 2014–15 2013–14
Gold geotech
usually consist of some nonore mineral material gangue like quartz or calcite and ore minerals like gold silver and base metal lead zinc copper and iron sulfides Quartzbase metalgold veins are the most common type of ore body in the mining distracts of the Front Range of Colorado Here the veins generally fill
B H Mining History – Black Hills Mining Museum
On April 9 1876 Moses and Fred Manuel loed the Homestake claim near the current town of Lead – the richest source of gold in the area In June 1877 George Hearst purchased the Homestake Mine from the Manuel brothers for 70 000 By 1880 the rich placer deposits were depleted and hard rock mining processes
Economic Geology RG Impact Description Impact Rankings
The Malmberget iron oxideapatite IOA deposit in northern Sweden is one of the largest underground iron ore mine operations in the world with estimated ore reserves in 2015 of 346 million metric The Structure and Significance of AnhydriteBearing Vein Arrays Lienetz Orebody Lihir Gold Deposit Papua New Guinea
Porphyry copper deposit Wikipedia
Numerous worldclass porphyry coppergold deposits are hosted by highK or shoshonitic intrusions Examples are 1 Bingham coppergold mine Utah 2 Grasberg coppergold mine Indonesia 3 Northparkes coppergold mine New South Wales Australia 4 Oyu Tolgoi coppergold mine Mongolia 5 Peschanka
Alteration and Vein Textures Associated with Gold Neliti
related to deposition of gold in Bunikasih deposits superimposed on Late TertiaryQuaternary andesitic formation andesite ore bodies exhibit broad alteration patterns adjacent to mineralization passing from fresh rock episodik dalam ruang terbuka seperti koloform mineral berbentuk bilah perlapisan crustiform breksi
The settings and styles of gold mineralization in Southeast Asia
Jun 8 1996 Extensive exploration in Indonesia since the middle 1980 39s has led to significant discoveries Several large gold mines have been developed including Grasberg coppergold Kelian Mesel Mt Muro and Wetar Recent discoveries include the Batu Hijau coppergold deposit and the Busang gold deposit
Porphyry copper USGS Publiions Warehouse
Map of permissive tracts for porphyry copper deposits New Guinea Island Indonesia 11Department of Geology and Mines Phnom Penh Cambodia 2 Porphyry Copper Assessment of Southeast Asia and Melanesia resources for those 23 deposits total 84 Mt of copper and 6 000 t of gold Eleven permissive tracts
Alteration and Vein Textures Associated with Gold Neliti
related to deposition of gold in Bunikasih deposits superimposed on Late TertiaryQuaternary andesitic formation andesite ore bodies exhibit broad alteration patterns adjacent to mineralization passing from fresh rock episodik dalam ruang terbuka seperti koloform mineral berbentuk bilah perlapisan crustiform breksi
Gold Deposits of the Carolina Slate Belt Southeastern United States
Foley N K and Ayuso R A 2012 Gold deposits of the Carolina Slate Belt southeastern United States Age and origin of the major 25 Figures 1 Historic open pit of the Haile Gold Mine South Carolina tuffaceous siltstone typical of rocks near the gold deposits 4 tectonic breccia at Haile 5–6 pyrite cemented
Biogeochemistry exploration for iron mineralization in IJENS
pinpoint the loion of primary iron mineralization Keywords biogeochemistry iron deposit Coffea arabica Lampung 1 Introduction Indonesia is well known to possess a variety of mineral resources Geologically this is due to the position of Indonesian archipelago within an active Cenozoic magmatic arc with a length
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