New results reflect stepout drilling on all sides of the discovery 2 zone that has increased the size of the zone to 600 metres m in a northeastsouthwest direction, merging with the discovery. The exploration target is for carlin style gold mineralization in this interpreted, folded roberts mountain and popovich formation stratigraphy. Spatial and temporal relationships between carlinstyle gold and polymetallic mineralization at the. With that motivation, john muntean and moira smith, with the help of al hofstra, put together a forum sponsored by the society of economic geologists highlighting the diversity of carlin style gold deposits in the world. Gsr is pleased to report that first pass reconnaissance geochemical sampling on its plateau property in yukon has returned numerous anomalous gold, arsenic, antimony, mercury, and thallium values over a 7. Overview of carlintype prospects of the nadaleen trend.
Drill targets based on reinterpreting mineralization controls at the pastproducing, carlinstyle quito gold property, central nevada with significant contributions from. The nadaleen trend is a recently discovered, 25 kilometer long trend of mineralization along the northern margin of the selwyn basin in eastcentral yukon. Carlinstyle gold mineralization in the yukon territory, canada, venus zone, einarson property, anthill resources ltd. This is a recent photo of the new cortez hills open pit looking towards the northwest. Liberty gold continues to expand thick zone of highgrade. This study presents 1 results of new anacondastyle outcrop geologic map of a structurally complex area measuring 4. Virtually all carlin deposits discovered to date are located in north central nevada however in 2010 atac resources discovered gold mineralization in the yukon that has all the hallmarks of carlin style mineralization. Nevada is centered in the geologically unique basin and. Carlintype gold deposit development as an analogue for. In this chapter, we first discuss the classification of sedimentary rockhosted gold and silver deposits as a general class in order to better define the nature of carlin. Liberty gold drills thick, highgrade carlinstyle gold. A yukon analogue to carlin type gold mineralization of the great basin.
Liberty gold extends highgrade carlin style gold mineralization at the black pine project, idaho, usa including 3. Alteration typically includes silicification, argillization, and sulfidation. The deposits are known mainly in northern nevada and northwestern utah where they are arranged in clusters and belts. Lithogeochemistry of carlintype gold mineralization in. Debbie schneider consulting computer geologist bravada paul hohbach senior consulting geologist coeur john pierson senior consulting geologist bravada. Current au endowment of carlinstyle deposits in nevada is estimated up to 7,930 tons, and the deposits account for. Carlinstyle deposits are broadly categorized as a sediment predominantly carbonate\ud hosted class, with gold contained as solid solution or submicron particles within\ud. The carlinstyle gold deposits were defined as a new type after their discovery near carlin in nevada, usa during 1960s e. Kovacs, nikolett 2014 carlinstyle gold mineralization in the yukon territory, canada, venus zone, einarson property, anthill resources ltd. Carlin type deposits are epigenetic, largetonnage, lowgrade, sedimenthosted disseminated gold deposits. Spatial and temporal relationships between carlin style gold and polymetallic mineralization at the. Liberty gold drills thick, highgrade carlinstyle gold mineralization at the black pine project, idaho, usa, including 2. Liberty gold expands discovery 2 zone of highgrade oxide. It is noteworthy that several sedimentary hosted and orogenic au deposits with similar mineralization ages.
Carlin style deposits are broadly categorized as a sediment predominantly carbonate\ud hosted class, with gold contained as solid solution or submicron particles within\ud disseminated pyrite and arsenian pyrite. Lgdtsx liberty gold or the company is pleased to announce additional. Lgd is pleased to announce that drilling at black pine in southern idaho, usa, continues to return thick, highgrade intervals of carlinstyle oxide gold mineralization. Liberty gold liberty gold expands discovery 2 zone of high. Carlintype gold deposits have been well documented, but there has not been a unified genetic model explaining why nevada, and, in particular, the northcentral nevada part of nevada, should be so uniquely endowed. Geological survey, mail stop 973, box 25046, denver, colorado 80225 john l. Test for carlinstyle mineralization below the resource in the lower plate of the roberts mountains thrust historic drilling was shallow 90 to 125m large goldinsoil anomalies occur across the project, and most remain either untested or poorly tested with multiple mineralized drill. Carlintype gold deposits, with the most prominent examples near carlin, nevada usa, are characterized by very finely disseminated gold in. Carlintype gold deposits are sedimenthosted, lowgrade disseminated gold deposits with economic recovery cutoffs at or below 0. The deposits in this region are estimated to contain about 5,000 tonnes of gold, more than half of which 3100.
Submicronsized gold in micronsized arsenian pyrite is disseminated in fractured cambrian through triassic carbonaceous shale and carbonate rocks, and is associated with anomalous hg, sb, as, u, and tl. The jacksonlawtonbowman normal fault system and its. With that motivation, john muntean and moira smith, with the help of al hofstra, put together a forum sponsored by the society of economic geologists highlighting the diversity of carlinstyle gold deposits in the world. The strategic location of the project, along with the similarity in geologic setting to the neighboring carlinstyle deposits, makes cortez summit a high quality target for carlinstyle gold mineralization. Carlintype disseminatedreplacement gold deposits in the western united states. Critical geologic characteristics and viable models jean s. Geological survey, ms973, box 25046, denver, co 80225, usa received 21 march 2002. Jun 20, 2014 carlintype gold deposits account for 9% of the worlds gold production. Goldstrike discovers carlin style gold mineralization in yukon september, 2011 goldstrike resources ltd. Liberty gold expands discovery 2 zone of highgrade oxide carlinstyle mineralization at the black pine project, idaho, usa, with 2. Lithogeochemistry of carlintype gold mineralization in the.
These deposits are typically low grade, high tonnage and they appear to be largely confined to nevada, usa. With that motivation, john muntean and moira smith, with the help of al hofstra, put together a forum sponsored by the society of economic geologists highlighting the diversity of. Pdf characteristics and models for carlintype gold deposits. Carlintype gold deposits are sedimenthosted disseminated gold deposits. Carlinstyle gold province linked to the extinct emeishan. While gold was first discovered in nevada in the 1870s, it wasnt until 1961 when newmont discovered and developed the first mine along a structurally. An example of this is the shuangwang gold deposit fan, s. The carlin trend, located in nevada, usa, was discovered in 1961 and comprises a 65 km long. However, recent discoveries in the yukon territory show many of the.
Bachelors thesis, memorial university of newfoundland. Since 2005, dpm has undertaken an extensive exploration programme for this style of mineralization, both within the. The regional geologic framework and style of mineralization are both analogous to the carlin trend in nevada. Geochemical prospecting for carlintype gold deposits. Geological survey, ms973, box 25046, denver, co 80225, usa. Liberty gold continues to expand thick zone of highgrade carlinstyle gold mineralization at the black pine project, idaho, usa, with 3. New results from discovery 2 expand the footprint of mineralization and confirm the company thesis that previous operators did not test laterally and to depth in this 12 square kilometer sedimentary. This study presents 1 results of new anaconda style outcrop geologic map of a structurally complex area measuring 4. Screamer, which forms the western end of betzepost, is a stratiform ore zone that is hosted almost entirely by the wispy. The nadaleen trend is bound structurally to the south by the regional scale dawson thrust and the kathleen lakes fault to the. Jan 07, 2020 liberty gold expands discovery 2 zone of highgrade oxide carlin style mineralization at the black pine project, idaho, usa, with 2. Characteristics and origin of sedimenthosted disseminated gold deposits.
To date, carlin type gold deposits have been\ud largely defined and described in the great basin region of nevada. Nevada is centered in the geologically unique basin and range. Drill targets based on reinterpreting mineralization controls. Lithogeochemistry of carlintype gold mineralization in the gold bar district, battle mountaineureka trend, nevada ozcan yigita, albert h. Carlin type gold mineralization, including the archimedes deposit. Controls of fault and fold geometry on the distribution of gold mineralization on the carlin t rend 345 figure 5b. Cline, university of nevada, las vegas, 4505 maryland parkway, box 454010, las vegas, nevada 891544010 albert h. Carlin type gold ore from the twin creeks mine, nevada, near the getchell mine. Carlinstyle gold deposits occur in altered carbonates in and adjacent to these faults and also where these goldbearing fluids have ponded beneath the upper plate seal or other impermeable barriers, particularly in structures such as anticlines, very much like oil. Drilling extends discovery 2 zone in three directions. Test for carlinstyle mineralization below the resource in the lower plate of the roberts mountains thrust historic drilling was shallow 90 to 125m large goldinsoil anomalies occur across the project, and most remain either untested or poorly tested with multiple mineralized drill holes to follow up on bottom figure.
Characteristics and models for carlin type gold deposits. Drill targets based on reinterpreting mineralization. Chemical and spectrographic analyses of unoxidizedore types in the. Liberty gold continues to expand thick zone of highgrade carlin style gold mineralization at the black pine project, idaho, usa, with 3. Lgdtf liberty gold or the company is pleased to announce additional drill results from its carlinstyle black pine property in southern idaho, usa. A third episode of mineralization, probably late tertiary, is characterized by the volatile suite associated with the carlintype gold deposits and was probably emplaced by. Geology of the southern lynn w indow, leeville carlin and genesis bluestar districts. A similar model including recumbent zed folding along a range front fault is the focus of mineralization at newmonts twin creeks mine, located approximately 25 miles north of iron point. Only a small portion of the property has been evaluated, and the fourmile structural corridor in particular requires more attention.
To date, carlintype gold deposits have been largely defined and described in the great basin region of nevada. A yukon analogue to carlintype gold mineralization of the great basin. Carlin deposits are named after the little settlements of carlin in northeastern nevada which is situated on the linear deposits that make up the carlin trend where this type of deposit was first identified and where the majority of the gold currently mined in the us is derived from. Oct 15, 2019 liberty gold extends highgrade carlin style gold mineralization at the black pine project, idaho, usa including 3. Relation of carlintype gold mineralization to lithology, structure and.
Liberty gold expands discovery 2 zone of highgrade oxide carlin style mineralization at the black pine project, idaho, usa, with 2. Diversity in carlinstyle gold deposits geoscienceworld books. Geology of the southern lynn w indow, leevillecarlin and genesis bluestar districts. These breccia bodies are conformable with stratigraphic units in the host rock. Alteration and mineralization styles of the orogenic disseminated zhenyuan gold deposit, southeastern tibet. Liberty gold liberty gold continues to expand thick zone. Pdf controls of fault and fold geometry on the distribution.
Extends highgrade carlinstyle gold mineralization at the black pine project, idaho 15. Reverse circulation rc drilling at black pine continues to return thick, highgrade intervals of carlinstyle oxide gold mineralization. Starting around 15 ma, the bedrock, and the gold ore bodies contained therein, were separated into large blocks by major post mineral fault zones as nevada. Carlinstyle gold mineralization in the yukon territory. Geology, mineralization and geochronology of the conrad.
Liberty gold extends highgrade carlinstyle gold mineralization at the black pine project, idaho, usa including 3. It contains one of the largest concentrations of carlintype gold deposits, which are currently being sought and mined in the united states and china, in the world cline et al. Gold deposits in the northern dianqiangui area are. Geology and geochemistry of carlintype gold deposits in china. Diversity in carlinstyle gold deposits geoscienceworld. Ethos to drill carlin style gold target at iron point. Alteration and mineralization styles of the orogenic. Igneous geology of the keystone window, simpson park. Nov 05, 2019 liberty gold drills thick, highgrade carlin style gold mineralization at the black pine project, idaho, usa, including 2. Hofstrab adepartment of geological engineering, canakkale onsekiz mart university, canakkale 17020, turkey bu. This is an auriferous, silicifieddecalcified siltstonemudstone from the comus formation lower ordovician. The style in question is limestone or calcareous sediment hosted gold deposits, which are sometimes referred to as carlin style gold mineralization.
Oct 01, 2019 liberty gold drills thick, highgrade carlin style gold mineralization at the black pine project, idaho, usa, including 2. Whether the change in the magnitude of carlintype gold mineralization is directly or indirectly related to changes in midcenozoic magmatism is uncertain and an area of future research. Characteristics and models for carlintype gold deposits. The gold mineralization is very finely disseminated. The dianqiangui golden triangle area is located at the junction of yunnan, guizhou, and guangxi provinces in southwest china. Liberty gold liberty gold continues to expand thick zone of.
Carlintype gold deposits in the dianqiangui golden. Liberty gold liberty gold expands discovery 2 zone of. Geology of the carlin gold deposit, nevada usgs publications. Carlintype gold mineralization, including the archimedes deposit. Carlinstyle deposits are broadly categorized as a sediment predominantly carbonate hosted class, with gold contained as solid solution or submicron particles within disseminated pyrite and arsenian pyrite. Disseminated, carlintype, gold deposits are associated with a volatile suite of elements consisting of hg, as, sb, w, and sometimes, but not always, au. Carlin type gold ore bodies red formed within the rocks of the earths crust through the geolilogic processes previliously dibddescribed from 40 to 25 million years ago m ma. The carlintype gold deposits in china lie mostly near the margins of the proterozoic yangtze and aba cratons. Geochemical exploration for this type of disseminated deposit depends upon recognizing the significance of this volatile suite and interpreting it in light of other geologic and geophysical data.
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