Matches in SemOpenAlex for { <https://semopenalex.org/work/W1524078857> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W1524078857 endingPage "474" @default.
- W1524078857 startingPage "461" @default.
- W1524078857 abstract "The world-class Sarbai, Kachar and Sokolovsk iron ore deposits of the Turgai belt, in the Carboniferous Valerianovskoe arc of northwest Kazakhstan, contain an aggregate of more than 3 billion tonnes of mineable massive magnetite. The Valerianovskoe arc is the possible westward extension to the South Tien Shan arc that is host to the giant Almalyk Cu-Au porphyry system in Uzbekistan. The magnetite bodies of the Turgai belt replace limestone and tuffs, and are distal to locally proximal to the contacts of gabbro-diorite-granodiorite intrusive complexes. Three main stages of alteration and mineralisation can be recognised at these deposits, namely: (1) pre-ore; (2) the main magnetite forming; and (3) post ore phases. The pre-ore stage is characterised by high temperature, metamorphic/metasomatic calc- and alumino-silicates. The main magnetite ore phase formed when hot, sulphur poor, acidic, iron-, silica- and aluminium rich fluids were structurally focused to dissolve and replace the dominantly limestone hosts. This was accompanied by a skarn assemblage gangue of epidote, calcic-pyroxenes, calcic-garnet and calcic-amphiboles, minor sulphide minerals and high field strength element (HFSE)-bearing accessory minerals such as titanite and apatite. This magnetite-skarnmineralisation was followed by a late sulphide phase, when comparatively cooler fluids, which produced distinctive and extensive alteration assemblages of sodium-rich scapolite, albite, chlorite and K feldspar, accompanied by chalcopyrite, pyrite and minor sphelarite and galena. The post-ore phase, is characterised by cross cutting barren veins composed of calcite, lesser albite and K feldspar, and minor quartz, and by widespread alteration comprising scapolite, albite and silica, which surrounds the deposit, and extends for several kilometers into the host rock. Many of the geological and mineralogical features of these deposits closely resemble those of IOCG deposits and provinces around the world.However, as the copper sulphide mineralisation is sub-economic, they may only be classified as either IOCG-style or IOCG-related deposits. Stable isotope (C, O, S) studies have been carried out on a range of sulphides, carbonates and silicates related to the mineralisation. Preliminary results from sulphides intergrown with magnetite support a magmatic source for the sulphur. Oxygen isotope data from associated silicates and iron oxides also support an igneous, or igneous rock equilibrated source for the mineralising fl uids. Carbon and oxygen isotope data from gangue carbonates suggestcarbonate is derived from the interaction of igneous-derived or igneous-equilibrated fl uids with host limestones." @default.
- W1524078857 created "2016-06-24" @default.
- W1524078857 creator A5012428560 @default.
- W1524078857 creator A5036557426 @default.
- W1524078857 creator A5051717831 @default.
- W1524078857 creator A5063421141 @default.
- W1524078857 creator A5067282665 @default.
- W1524078857 date "2012-01-01" @default.
- W1524078857 modified "2023-09-27" @default.
- W1524078857 title "The iron skarns of the Turgai Belt, northwestern Kazakhstan" @default.
- W1524078857 hasPublicationYear "2012" @default.
- W1524078857 type Work @default.
- W1524078857 sameAs 1524078857 @default.
- W1524078857 citedByCount "0" @default.
- W1524078857 crossrefType "journal-article" @default.
- W1524078857 hasAuthorship W1524078857A5012428560 @default.
- W1524078857 hasAuthorship W1524078857A5036557426 @default.
- W1524078857 hasAuthorship W1524078857A5051717831 @default.
- W1524078857 hasAuthorship W1524078857A5063421141 @default.
- W1524078857 hasAuthorship W1524078857A5067282665 @default.
- W1524078857 hasConcept C127313418 @default.
- W1524078857 hasConcept C151730666 @default.
- W1524078857 hasConcept C167919410 @default.
- W1524078857 hasConcept C17409809 @default.
- W1524078857 hasConcept C191897082 @default.
- W1524078857 hasConcept C192562407 @default.
- W1524078857 hasConcept C195843664 @default.
- W1524078857 hasConcept C199289684 @default.
- W1524078857 hasConcept C2776062231 @default.
- W1524078857 hasConcept C2776152364 @default.
- W1524078857 hasConcept C2776432453 @default.
- W1524078857 hasConcept C2777781897 @default.
- W1524078857 hasConcept C2777844515 @default.
- W1524078857 hasConcept C2778357522 @default.
- W1524078857 hasConcept C2778520076 @default.
- W1524078857 hasConcept C2778849375 @default.
- W1524078857 hasConcept C2779870107 @default.
- W1524078857 hasConcept C33757491 @default.
- W1524078857 hasConcept C67236022 @default.
- W1524078857 hasConcept C7145564 @default.
- W1524078857 hasConceptScore W1524078857C127313418 @default.
- W1524078857 hasConceptScore W1524078857C151730666 @default.
- W1524078857 hasConceptScore W1524078857C167919410 @default.
- W1524078857 hasConceptScore W1524078857C17409809 @default.
- W1524078857 hasConceptScore W1524078857C191897082 @default.
- W1524078857 hasConceptScore W1524078857C192562407 @default.
- W1524078857 hasConceptScore W1524078857C195843664 @default.
- W1524078857 hasConceptScore W1524078857C199289684 @default.
- W1524078857 hasConceptScore W1524078857C2776062231 @default.
- W1524078857 hasConceptScore W1524078857C2776152364 @default.
- W1524078857 hasConceptScore W1524078857C2776432453 @default.
- W1524078857 hasConceptScore W1524078857C2777781897 @default.
- W1524078857 hasConceptScore W1524078857C2777844515 @default.
- W1524078857 hasConceptScore W1524078857C2778357522 @default.
- W1524078857 hasConceptScore W1524078857C2778520076 @default.
- W1524078857 hasConceptScore W1524078857C2778849375 @default.
- W1524078857 hasConceptScore W1524078857C2779870107 @default.
- W1524078857 hasConceptScore W1524078857C33757491 @default.
- W1524078857 hasConceptScore W1524078857C67236022 @default.
- W1524078857 hasConceptScore W1524078857C7145564 @default.
- W1524078857 hasLocation W15240788571 @default.
- W1524078857 hasOpenAccess W1524078857 @default.
- W1524078857 hasPrimaryLocation W15240788571 @default.
- W1524078857 hasRelatedWork W138893274 @default.
- W1524078857 hasRelatedWork W1777418082 @default.
- W1524078857 hasRelatedWork W1974167752 @default.
- W1524078857 hasRelatedWork W2010897155 @default.
- W1524078857 hasRelatedWork W2045409783 @default.
- W1524078857 hasRelatedWork W2075787325 @default.
- W1524078857 hasRelatedWork W2102993267 @default.
- W1524078857 hasRelatedWork W2155137417 @default.
- W1524078857 hasRelatedWork W2165587668 @default.
- W1524078857 hasRelatedWork W2352073291 @default.
- W1524078857 hasRelatedWork W2366723386 @default.
- W1524078857 hasRelatedWork W2511316475 @default.
- W1524078857 hasRelatedWork W2567035488 @default.
- W1524078857 hasRelatedWork W2592512156 @default.
- W1524078857 hasRelatedWork W2595169732 @default.
- W1524078857 hasRelatedWork W26462884 @default.
- W1524078857 hasRelatedWork W3019165217 @default.
- W1524078857 hasRelatedWork W3111848474 @default.
- W1524078857 hasRelatedWork W43064759 @default.
- W1524078857 hasRelatedWork W207032012 @default.
- W1524078857 isParatext "false" @default.
- W1524078857 isRetracted "false" @default.
- W1524078857 magId "1524078857" @default.
- W1524078857 workType "article" @default.