FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4321350705> ?p ?o ?g. }

• W4321350705 endingPage "107093" @default.
• W4321350705 startingPage "107093" @default.
• W4321350705 abstract "Hydrothermal alteration of chromitite bodies in the form of pods (from a few centimeters to a few tens of meters in thickness) from the central sector of the Sabzevar ophiolite belt (NE Iran) was examined down to the nanoscale. The main Cr-spinel alteration feature corresponds to homogeneous cores (primary Cr-spinel) either rimmed by or locally replaced by heterogeneous domains composed of spinel grains with little or no inclusions / pores. The chemical evolution of spinel in response to hydrothermal alteration is found to follow two distinct chemical trends: (i) in the massive and semi-massive chromitites, the trend consists in the progressive increase of Cr without Fe3+ incorporation; (ii) in serpentinized dunites containing disseminated Cr-spinel grains, the increase in Cr occurs in conjunction with Fe3+ incorporation. These two trends involve a decrease in the spinel Mg/(Mg + Fe2+) ratio. Nanoscale observation using transmission electron microscopy (TEM) shows that porous ferrian Cr-spinel which are poorer in Al and Mg and richer in Cr and Fe than the primary Cr-spinel, contains relicts of the primary Cr-spinel as well as intercalated platelets of newly formed magnetite and lizardite/chlorite. Automated crystal orientation mapping reveals that the (001) and (111) planes of newly formed lizardite/chlorite and Cr-spinel/magnetite, respectively, are parallel. The replacement of the primary Cr-spinel by porous ferrian Cr-spinel and magnetite is found to be isomorphic. The pores, ranging from 2 to 15 μm in size, may act as pathways for the aqueous solutions involved in the serpentinization process, which fed the crystallization of alteration minerals in the pores. The two different compositional trends in chromite grains from massive/semi-massive chromitite and hosted in serpentinized dunite are best explained, using mass-balance calculation, by considering the influence of the Cr-spinel/(Cr-spinel+olivine) initial ratio in the rock (XChr) and the dissolution of Mg at a water-to-rock ratio (w/r) above one. In general, at the cm-to-meter scale, Al and Fe exchange between chromitites and their serpentinized dunite envelope was not observed in the central sector of the Sabzevar ophiolite belt; however, such Al and Fe transfer is clearly observed in other parts of this ophiolite belt, where hydrothermal alteration of podiform chromitites produced magnetite ores. Comparatively, the small extend of chromitite alteration observed here, likely reflects the product of lesser fluid-rock interaction with w/r ratio close to one instead of >103 estimated for the magnetite ores based on the magnitude of the Al transfer to their dunite envelope." @default.
• W4321350705 created "2023-02-20" @default.
• W4321350705 creator A5031809870 @default.
• W4321350705 creator A5075825652 @default.
• W4321350705 creator A5091378017 @default.
• W4321350705 date "2023-04-01" @default.
• W4321350705 modified "2023-10-18" @default.
• W4321350705 title "Hydrothermal alteration of chromitite-dunite pairs from the Sabzevar ophiolite (NE Iran): Chemical and nano-textural evolution of Cr-spinel" @default.
• W4321350705 cites W1482109124 @default.
• W4321350705 cites W1862727328 @default.
• W4321350705 cites W1972761036 @default.
• W4321350705 cites W1983307310 @default.
• W4321350705 cites W1988388558 @default.
• W4321350705 cites W1989746918 @default.
• W4321350705 cites W1992356046 @default.
• W4321350705 cites W1995085999 @default.
• W4321350705 cites W2001054288 @default.
• W4321350705 cites W2009156014 @default.
• W4321350705 cites W2010440071 @default.
• W4321350705 cites W2018332371 @default.
• W4321350705 cites W2019738508 @default.
• W4321350705 cites W2020592066 @default.
• W4321350705 cites W2026704415 @default.
• W4321350705 cites W2031184320 @default.
• W4321350705 cites W2038325228 @default.
• W4321350705 cites W2041002071 @default.
• W4321350705 cites W2047269331 @default.
• W4321350705 cites W2047282929 @default.
• W4321350705 cites W2048801138 @default.
• W4321350705 cites W2054535251 @default.
• W4321350705 cites W2056099731 @default.
• W4321350705 cites W2069053606 @default.
• W4321350705 cites W2071123829 @default.
• W4321350705 cites W2074340644 @default.
• W4321350705 cites W2074982708 @default.
• W4321350705 cites W2076146440 @default.
• W4321350705 cites W2077663094 @default.
• W4321350705 cites W2077945170 @default.
• W4321350705 cites W2082370069 @default.
• W4321350705 cites W2089505133 @default.
• W4321350705 cites W2098991783 @default.
• W4321350705 cites W2109202005 @default.
• W4321350705 cites W2125585387 @default.
• W4321350705 cites W2128269308 @default.
• W4321350705 cites W2141154125 @default.
• W4321350705 cites W2161866809 @default.
• W4321350705 cites W2256388982 @default.
• W4321350705 cites W2324877576 @default.
• W4321350705 cites W2328711609 @default.
• W4321350705 cites W2334461511 @default.
• W4321350705 cites W2519429919 @default.
• W4321350705 cites W2593196373 @default.
• W4321350705 cites W2749944304 @default.
• W4321350705 cites W2792627321 @default.
• W4321350705 cites W2884002451 @default.
• W4321350705 cites W2891936587 @default.
• W4321350705 cites W2901276998 @default.
• W4321350705 cites W2962833891 @default.
• W4321350705 cites W3008634812 @default.
• W4321350705 cites W3133164911 @default.
• W4321350705 cites W4206726691 @default.
• W4321350705 cites W4229005985 @default.
• W4321350705 doi "https://doi.org/10.1016/j.lithos.2023.107093" @default.
• W4321350705 hasPublicationYear "2023" @default.
• W4321350705 type Work @default.
• W4321350705 citedByCount "0" @default.
• W4321350705 crossrefType "journal-article" @default.
• W4321350705 hasAuthorship W4321350705A5031809870 @default.
• W4321350705 hasAuthorship W4321350705A5075825652 @default.
• W4321350705 hasAuthorship W4321350705A5091378017 @default.
• W4321350705 hasConcept C127313418 @default.
• W4321350705 hasConcept C151730666 @default.
• W4321350705 hasConcept C156622251 @default.
• W4321350705 hasConcept C165205528 @default.
• W4321350705 hasConcept C17409809 @default.
• W4321350705 hasConcept C191897082 @default.
• W4321350705 hasConcept C192562407 @default.
• W4321350705 hasConcept C199289684 @default.
• W4321350705 hasConcept C23923706 @default.
• W4321350705 hasConcept C2776230739 @default.
• W4321350705 hasConcept C2777781897 @default.
• W4321350705 hasConcept C2777844515 @default.
• W4321350705 hasConcept C2779743592 @default.
• W4321350705 hasConcept C2779870107 @default.
• W4321350705 hasConcept C2781150389 @default.
• W4321350705 hasConcept C77928131 @default.
• W4321350705 hasConceptScore W4321350705C127313418 @default.
• W4321350705 hasConceptScore W4321350705C151730666 @default.
• W4321350705 hasConceptScore W4321350705C156622251 @default.
• W4321350705 hasConceptScore W4321350705C165205528 @default.
• W4321350705 hasConceptScore W4321350705C17409809 @default.
• W4321350705 hasConceptScore W4321350705C191897082 @default.
• W4321350705 hasConceptScore W4321350705C192562407 @default.
• W4321350705 hasConceptScore W4321350705C199289684 @default.
• W4321350705 hasConceptScore W4321350705C23923706 @default.
• W4321350705 hasConceptScore W4321350705C2776230739 @default.
• W4321350705 hasConceptScore W4321350705C2777781897 @default.
• W4321350705 hasConceptScore W4321350705C2777844515 @default.

• next