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Thursday, December 3, 2020 | History

3 edition of Shallow expressions of deep, high-grade gold deposits found in the catalog.

Shallow expressions of deep, high-grade gold deposits

Shallow expressions of deep, high-grade gold deposits

NW Rain/Tess deposits, West Bazza/Screamer deposits, SSX deposit : September 25-27


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Published by Geological Society of Nevada in [Reno, Nev.] .
Written in English

  • Gold ores -- Nevada -- Elko Region,
  • Gold mines and mining -- Nevada -- Elko Region,
  • Geology -- Nevada -- Elko Region -- Guidebooks

  • Edition Notes

    Includes bibliographical references.

    Other titles1998 fall field trip guidebook., Geological Society of Nevada 1998 fall field trip guidebook.
    Statementguidebook editor & field trip organizer, Joseph A. Kizis ; field trip leaders, David C. Mathewson, Eric A. Lauha, Joseph A. Kantor.
    SeriesSpecial publication / Geological Society of Nevada -- no. 28., Special publication (Geological Society of Nevada) -- no. 28.
    ContributionsKizis, Joseph A., Mathewson, David C., Lauha, Eric A., Kantor, Joseph A., Geological Society of Nevada.
    The Physical Object
    Pagination172 p. :
    Number of Pages172
    ID Numbers
    Open LibraryOL17598177M

    The shaft reached 61 metres deep with reef width from to metres and yielded 85 ozs gold at g/t gold from tonnes. can develop extremely high-grade, free gold deposits, as the. The drill rig has moved to the high-grade Redcastle Gold Project where extremely high gold grades were mined over a x 7 square kilometre area containing over 24 historic mining areas. They include the Welcome Group of mines that were exploited over 2 kilometres strike length from –, down to a maximum depth of metres and.   This highly active gold belt is host to a number of well-known deposits including Goliath-Goldlund (Treasury Metals), and Rainy River (New Gold), both of which have seen substantial recent expansions. Since the development of the Rainy River deposit, 10 Moz of gold has been discovered in the belt (Figure 1).

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Shallow expressions of deep, high-grade gold deposits Download PDF EPUB FB2

Shallow Expressions of Deep, High-Grade Au Deposits: Northwest Rain & Tess, West Bazza Screamer, & SSX Deposits $ – $ Select options; Supplemental Road Log to the Long Valley-Mono Craters Region of Eastern California by Steve Lipshie $ Select options.

Shallow expressions of deep, high-grade gold deposits: NW Rain/Tess deposits, West Bazza/Screamer deposits, SSX deposit, September [] [Reno, Nev.]: Geological Society of Nevada, [] Description.

In book: Geological Society of Nevada field trip guidebook: Shallow expressions of Carlin-type gold deposits: Alligator Ridge and Emigrant mines, Nevada (pp). Recent research has shown that Archaean lode-gold deposits occur in environments that range in their metamorphic grade from prehnite-pumpellyite to lower granulite facies.

Based on this data a new classification is proposed for these deposits. In this classification, shallow-level gold deposits are classed as epizonal, the so-called “mesothermal” deposits are mesozonal, and the Cited by: In: Kizis Jr JA (ed) Shallow expressions of deep, high-grade gold deposits.

Fall Field Trip Guidebook, Geol Soc Nev Spec Pub – Thompson JFH, Lessman J, Thompson AJB () The Temora gold-silver deposit: a newly recognized style of high sulfur mineralization in the Lower Paleozoic of high-grade gold deposits book Richard H.

Sillitoe. Location of the Gold Ridge deposit, Solomon Islands. lO I I I I R.J. IRVINE AND M.J. SMITH I 0 KILO I t.A/ (B) I (C) I I I i oe,nedsh,ow _: gold deposits I~ i.

(E) (D) GEOPHYSICAL EXPLORATION FOR EPITHERMAL GOLD DEPOSITS Gold Ridge, Guadalcanal, Solomon Islands The Gold Ridge deposit is situated approximately 27 km southeast of Hon.

The Meikle mine exploits one of the world’s highest grade Carlin-type gold deposits with reserves of ca. t gold at an average grade of g/t. Locally, gold grades exceed g/t.

Several geologic events converged at Meikle to create these spectacular gold grades. Deep Star is a high-grade Carlin-type gold deposit located in the northern part of the Carlin trend. The deposit averages g/t Au and by year end had produced t (1, oz) gold with a remaining reserve of t (, oz) gold.

This series describing the geology of gold deposits in the United States consists of chapters on the geochemistry of gold, the distribution of gold in the United States, des­ criptions of major gold terranes, and descriptions of individual deposits or districts.

It could be a new greenfields discovery, a colossal high-grade extension to an existing deposit, or a dusty old gold mine high-grade gold deposits book waiting to be explored by modern methods.

De Grey Mining (ASX:DEG) — one of ’s exploration success stories — is up almost per cent this year on the back of its find at the greenfields Hemi prospect. Ore deposits: Classification vs Modeling Each ore deposit is unique like a person’s finger print This uniqueness arises out of: ¾fundamental differences in processes and environments ¾local, site-specific geologic variations And produces an extremely large variation in characteristics ¾If we group the deposits according to their characteristics, we get a.

In gold mining, 10 g/t is a high-grade deposit for gold. 1 g/t is a low grade that shows the area is not very densely populated with gold.

But it high-grade gold deposits book depends on the price of gold. Alexander Gold Project Red Lake, Ontario The Alexander Property is situated within 2 kilometres of more than 28 million ounces of gold from past production and current resources and within metres of Goldcorp’s Far East Zone gold discovery.

The Alexander Property is of ample size to accommodate a high-grade gold deposit at depth as [ ]. The data used in this contribution are mainly from a global compilation of well-established IOCG deposits in Williams et al. (), Cox and Singer (), Porter () and other references shown in Table ts without available gold grades (e.g., Gameleira in Carajás mineral province, Boss-Bixby in Southeast Missouri Iron Province, Vi Kem in North Vietnam and some deposits in.

Deep Vehicle-Towed Ground Penetrating Radar Survey (Above Left) and GPR Image of Dry Stream Channel with Higher Potential for Gold-Bearing Placer Deposits (Above Right) GeoModel, Inc.

Geologists Matthew Turner, P.G. - Mr. Turner, shown at right operating the shallow EM instrument, has over 30 years of geological experience conducting.

ASX and London-listed precious and base metals hopeful, Adriatic Metals, has discovered gold mineralisation at depth in the course of peeling off more cracking high-grade base metals drill hits at its recently acquired brownfields Raska polymetallic project in Serbia.

The newly discovered gold-bearing vein zone at the Sastavci prospect returned an assay of 31m grading grams per tonne gold. ASX-listed gold and base metals player, White Cliff Minerals, has upsized its maiden RC drilling campaign at the historic Reedy South gold project in WA’s Murchison Goldfields after managing to lay its hands on a larger second drill rig.

The Perth-based company intends expanding the current Reedy South drill program from 3,m to approximately 4,m. Auroch Minerals doesn’t seem to be able to put a foot wrong at the Horn prospect south of Leinster in WA, with diamond drilling delivering a stream of high-grade nickel sulphide hits including metres at per cent nickel and per cent copper from metres down-hole.

Comments. 22 tonnes Au recovered from OP in –; UG mining produced tonnes Au between and (Longo and others, ); and tonnes Au and tonne Ag from through (Nevada Bureau, ), silver grade shown above calculated from ratio Au:Ag= sedimentary rock-hosted gold deposits in P.R.

China. These breccia bodies are conformable with stratigraphic units in the host rock. An example of this is the Shuangwang gold deposit (Fan, S.C. and Jin, Q.H., ), which is a large Carlin-type gold deposit in the Qinling area, hosted by stratabound breccia bodies (fig.

29). High grade epithermal gold mineralization: Lithocaps consist of vuggy residual quartz and advanced argillic alteration formed at shallow depths and potentially related to porphyry copper-bearing intrusions at depth, meaning that, conceptually, porphyry copper deposits may exist beneath the lithocap-hosted Nansatsu-type gold deposits.

Recent drilling has returned a swag of high-grade intercepts including 4m at an outstanding g/t gold from 64m and 4m at g/t gold from only 52m down-hole. These results extend the footprint of the gold mineralisation at the Goshawk deposit and have also begun to delineate a high-grade gold lode dubbed “the north-west flank”.

Sincethe Pimenton alteration zone has been explored by Cominco, Anglo American, Newmont, Mount Isa Mines, TVX, and South American Gold and Copper Company. Many of the geologists of these companies, as well as others, have regarded the Pimenton alteration zone as the surface expression of a deep-seated porphyry copper system.

A few efforts to mine deposits on the seafloor have succeeded, but to date, not many have overcome the technical challenges involved in retrieving large amounts of material from the deep ocean. Some successful mining has already occurred in relatively shallow waters less than meters.

Vancouver, BC Febru - KORE Mining Ltd. (TSXV: KORE | OTCQB: KOREF) (“KORE” or the “Company”) is pleased to announce that a diamond drilling program has commenced at its % owned FG Gold Project (“Project” or “FG Gold”) in the Cariboo Region of British Columbia.A minimum 2, meter drilling program is designed to test near-surface high-grade targets down.

Deep risk: How History informs Portfolio Design is the third installment in the investing for adults series. this series is not for novices. This booklet takes portfolio design beyond the familiar "black box" mean-variance framework/5(13).

Mineral deposits with large inventories or high grades of silver are found in four genetic groups: (1) volcanogenic massive sulfide (VMS), (2) sedimentary exhalative (SEDEX), (3) lithogene, and, (4) magmatichydrothermal. Principal differences between the four groups relate to source rocks and regions, metal associations, process and timing of mineralization, and tectonic setting.

W hen published inJ. Mero's Mineral Resources of the Sea ([1][1]) painted a picture of an essentially limitless resource of more than 1 trillion metric tons of manganese nodules on the Pacific deep-sea floor that were growing at a rate faster than could possibly be exploited, a literally inexhaustible supply of metals such as Mn, Co, Ni, and Cu.

This book literally launched a hundred. VIP Gloves Ltd is encouraged by the market trends in the glove industry with the average selling price of gloves for its peer Top Glove (KLSE:TOPGLOV) growing % year.

The shallow epithermal gold-silver-copper mineralising system at the Mt Carrington project provides a number of indications that the system is the distal expression of a buried intrusion source that may host a Cu-Au porphyry deposit. Prospecting and small scale mining of copper has been undertaken in the Mt Carrington region since the 19th century.

The goal of the drill program at Las Conchitas is to focus on the most promising zones of near surface, shallow dipping, high-grade gold mineralization in order to delineate a maiden resource.

Hole CL tested a deep zone of the Bugow iron formation outside of the historic gold zone, targeting the historic hole where an intersect of g/t Au over m (from to m.

The Program objective at the Cole and Cliff porphyry systems (the "Cliff" and "Cole") is to expand both the high-grade gold and deep copper-gold potassic zones in order to identify solid drill. The drill rig has moved to the high-grade Redcastle Gold Project where extremely high gold grades were mined over a x 7 square kilometre area containing over 24 historic mining areas.

They include the Welcome Group of mines that were exploited over 2 kilometres strike length fromdown to a maximum depth of metres and. Anomaly IPSM-1 located meters to the east of the last surface expression of the Santa Maria Veins is defined as sub-cropping, (very shallow) and an extension of the Santa Maria veining.

All other IP anomalies define new trends in the northern sector and range from shallow in depth to deep seated, +/- meters in depth. The discovery is highlighted by a line of recently sunk artisanal shafts that are exploiting high-grade gold-bearing quartz veins hosted in soft, shallow weathered bedrock.

The structure is defined as a subtle magnetic low that corresponds to a coincident gold-in-soil geochemical anomaly (ppb Au). Newmont’s producing 5moz Musselwhite underground gold mine, km to the north, has a small surface footprint similar to Ardiden’s advanced, high grade Kasagiminnis target.

A drill program by Ardiden at Kasagiminnis returned thick, shallow, and high-grade intercepts like 21m grading grams per tonne (g/t), 67m from surface. Thor Mining PLC said it has identified significant magnetic targets from the airborne survey at its Ragged Range Project in Western Australia.

Of these, Sterling is the principle initial target. On 16 July and 29 Augustas well as on 23 JanuaryCardinal reported numerous intersections of high‐grade gold at its Ndongo East deposit within the Ndongo Prospecting License and has. Descriptions of major ore deposits world wide.

The Telfer gold-copper deposit is located within the Paterson Tectonic Province, in the Great Sandy desert, km ESE of Port Hedland, and km north of Kalgoorlie, Western Australia (#Location: 21° 43' 18" S, ° 12' 52" E). The first recorded indication of the Telfer deposit was the discovery in of extensive small, low relief quartz.

The largest intact piece discovered weighed 90 kilograms, or roughly pounds. The company did a specific gravity test to evaluate gold content and estimated that about 2, ounces of gold would be obtained from the nugget.Chalice Gold Mines Limited has received firm commitments for a $ million placement to sophisticated, professional and institutional placement will comprise the issue of around Deep sea mining is a mineral retrieval process that takes place on the ocean mining sites are usually around large areas of polymetallic nodules or active and extinct hydrothermal vents at 1, to 3, metres (4, to 12, ft) below the ocean’s surface.

The vents create globular or massive sulfide deposits, which contain valuable metals such as silver, gold, copper.