PolyMet NorthMet Geology and Resource Background, August ...PolyMet NorthMet Geology and Resource Background, August 2006 (Revised January 2007) PolyMet Project Description Support Document ER03 Box 475, .
بنتلانديت ويكيبيدياالبنتلانديت يتركب من كبريتات حديد النيكل (حديد,نيكل) 9 كبريت 8. وتكون عادة نسبة الحديد تساوي نسبة النيكل ضمن البيتلانديت كما يحتوي على نسبة قليلة من الكوبالت.. يتواجد على شكل نظام بلوري مكعب، ويتواجد بشكل كتل حبيبية ...
Deciphering Magmatic and Metasomatic Processes Recorded by ...The troctolitic, Cu–Nisulfide mineralized Bathtub intrusion (BTI) of the 1·1 Ga Duluth Complex (NE Minnesota) was formed by multiple intrusive pulse We use cookies to enhance your experience on our continuing to use our website, you are agreeing to our use of cookies.
Voiseys Bay « Korelin Economics ReportOct 22, 2015· Voiseys Bay The CuNiCo Deposit at Voisey's Bay. The following is a summary of the genesis and discovery of the Voisey's Bay Deposit (by Alan V. Morgan and Peter I. Russel from the Department of Earth Sciences, University of Waterloo, Ontaria, Canada). "While prospecting in eastern Labrador in 1993, two Newfoundlanders, Albert Chislett and Chris Verbiski of Archean Resources, a ...
Dunka Road Copper Prospect In Babbitt, Minnesota | The ...The ore mined is composed of pentlandite, gold and pyrrhotite with waste material consisting primarily of ilmenite, magnetite and chlorite. The ore body is disseminated 10,000 meters (32,808 feet) long and 100 meters (328 feet) thick. Associated rock in this area is argillite from the Paleoproterozoic era to billion years ago. The ...
PGEEnrichment in MagnetiteBearing Olivine Gabbro: New ...olivine gabbro samples are disseminated grains of pyrrhotite, chalcopyrite, and pentlandite which form mutual intergrowths with one another (Figure3B). Traces of other sulfide minerals, like digenite and bornite, have also been found. Sulfide minerals often form thin rims around titaniferous magnetite and ilmenite crystals (Figure4C).
IGNEOUS STRATIGRAPHY, SULFIDE MINERALOGY, AND .Drill core logging in the Serpentine area has identified a heterogeneous mix of troctolitic rocks with minor norites and ultramafics as well as a basement high. The basement high is host to most of the known massive sulfide and is thought to be a fault bounded uplifted block.
Variations in Os isotope ratios of pyrrhotite as a result ...troctolitic/gabbroic rocks are indicative of at least a twostage process involving the devolatilization of metasedimentary xenoliths, contamination of magma, and back reaction between contaminated magma (±fluid) and residual pyrrhotite in the highgrade xenoliths. Results are significant because pyrrhotite is a host for Os in many rock
Coppernickel Mineralization in a Drill Core from the ...Copper and nickel sulfides occurring in the Duluth complex of northern Minnesota were examined at the Bureau of Mines. A microscopic study was undertaken to determine the mineralogy and paragenesis of the ore minerals. Eightytwo samples were taken from one deep diamond drill core located near ...
THE PETROLOGY AND SULFIDE MINERALIZATION OF THE .the Duluth Complex, is located in the ElyHoyt Lakes region of northeastern Minnesota. The upper part of this body is a sequence of troctolites and augite troctolites. The basal zone is 100150 m thick, contains numerous xenoliths and is quite variable in composition; it contains most of the sulfides (pyrrhotite, cubanite, chalcopyrite and ...
Abstract Harvard UniversityThe mineralisation comprises pyrrhotite (both hexagonal and troilite in varying proportions), pentlandite, chalcopyrite, magnetite and minor cubanite. An important component of all mineralized zones is a breccia of gneissic fragments in a troctolitic to noritic matrix referred to as BBS or FB.
(PDF) MAGMATIC NICKELCOPPERPLATINUM GROUP ELEMENT ...The Deeps troctolitic chamber, the largest exposed part of the in PGE minerals occur in very minute quantities that have appar trusion. Along this strike length, three main NiCu sulphide ently exsolved from the iron and base metal sulphides during zones constitute integral widened parts of the feeder dyke.
Mineral Commodities ofMineral Commodities of Newfoundland and Labrador Nickel Foreword This is the second in a series of summary publications covering the principal mineral commodities of the purpose is to act as a source of initial information for explorationists and to provide a bridge to the detailed repository of
Major Mines Projects | Voisey's Bay MineThe pentlandite is coarse grained and often forms coarse "loop textures" rimming large crystals of pyrrhotite. The pentlandite is frequently associated with magnetite, which is dispersed throughout the sulphide minerals. Magnetite can occur in local concentrations, ranging from less than 5 per cent to as high as 30 per cent.
Igneous architecture and implications for diverse CuPGE ...h SL133475, apatitic clinopyroxenite of Type 2 mineralization, pentlandite and chalcopyrite are surrounded by hydrothermal minerals, note the chalcopyrite is partially replaced by secondary magnetite and there is a PGM grain related to the chalcopyrite.
15th Year Assessment Report on the15th Year Assessment Report on the Project 61 Property Mineral Licence 000674M Labrador NTS 14D/08 By Spencer Vatcher, P. Geo. Silvertip Resources Inc. For New Dimension Resources Ltd.
Nickel 2006 Deposit Descriptions PorterGeoThe main ores are composed of pyrrhotite, pentlandite, chalcopyrite, pyrite and magnetite. Bornite is locally present in higher grade zones, while higher arsenic as arsenides characterises the South Range. The copper rich veins deep in the footwall are dominated by chalcopyrite and cubanite with lesser pentlandite, magnetite and pyrrhotite.
RI8084 Mike BoucherThe pyrrhotitetroilitepentlandite assemblage is believed to have formed from an immiscible sulfide melt, probably associated with the troctolitic rocks. Most of it settled to the very porous base of the Duluth Complex, and to the other porous zones near xenoliths; small portions were trapped higher in the section.
NorthMet Project, Minnesota, United States of America ...Dec 29, 2014· Polymetallic deposit is known to be a disseminated sulphide deposit in heterogeneous troctolitic rocks and is associated with the Midcontinent Rift, which is believed to have formed more than one billion years ago. Four types of metallic minerals including chalcopyrite, cubanite, pentlandite and pyrrhotite are widely found at this deposit.
FLUID SEGREGATION ON THE CUNIPGE MINERALIZZATION .2. Magmatic CuNiPGE sulfide mineralization occurs in the troctolitic rocks of the Layered Series in the South Filson Creek area. Sulfide minerals (chalcopyrite, cubanite, pyrrhotite and pentlandite) form disseminations or patches in irregular shaped zones m in diameter in an area of about km2. These zones do not form layers or ...
Maturi Nokomis Deposit Near Ely, Minnesota | The Diggings™duluth gabbros and related intrusions emplaced in riftrelated voids and grabens in older rocks. troctolitic last gabbros form basal contact. the duluth complex is a large, composite tholeiitic mafic intrusion that was emplaced into comagmatic flood basalts along a portion of the middle proterozoic (1. 1 ga, keweenawan) midcontinent rift system.
Platinumgroup minerals (PGM) in the Freetown Complex ...Platinumgroup minerals (PGM) in the Freetown Complex, Sierra Leone John Bowles1, Hazel M. Prichard2 and Peter 1Mineral Science Ltd., 109 Asheridge Road, Chesham, England HP5 2PZ 2Department of Earth Sciences, University of Cardiff, PO Box 914, Cardiff, Wales CF10 3YE email: john The Freetown Complex in Sierra Leone