Matches in SemOpenAlex for { <https://semopenalex.org/work/W2010220545> ?p ?o ?g. }
Showing items 1 to 39 of
39
with 100 items per page.
- W2010220545 endingPage "316" @default.
- W2010220545 startingPage "302" @default.
- W2010220545 abstract "Chemical and textural studies show fibrous rosasite crystals, with a spread Cu : Zn ratio, occuring in a calcite matrix together with goethite, psilomelane, quartz and saponite in oxidation zones of copper ore deposits. Aurichalcite occurs also as fibrous crystals and has a more fixed composition (Cu : Zn ratio is 1.3 : 3.7). Aurichalcite sample also contains prismatic hemimorphite. The nature of the copper ion and its site symmetry in rosasite and aurichalcite were investigated using a combination of optical absorption and EPR spectroscopy. Optical absorptions of rosasite exhibited three bands due to Cu 2 + in tetragonally elongated octahedral site and the parameters evaluated from the observed band positions are Dq = 1480, Ds = 2330 and Dt = 410cm - 1 . The EPR features observed in rosasite (g⊥>g∥) is an indication of predominant interactions within the copper ions (Cu > Zn). Optical and EPR spectra of aurichalcite sample account for Cu 2 + ion in the distorted octahedron site. The molecular structures of the two copper zinc carbonate hydroxide minerals were also studied by FTIR spectroscopy. The infrared spectra of the two minerals are different in line with differences in crystal structure and composition. The shift towards lower wave numbers of the carbonate bands and splitting of bands are more in aurichalcite than the other. This indicates that the symmetry of CO 3 2- ion in both the minerals is lowered from D 3 h to C 2 v or C s and distortion is more in aurichalcite." @default.
- W2010220545 created "2016-06-24" @default.
- W2010220545 creator A5016521961 @default.
- W2010220545 date "2004-07-02" @default.
- W2010220545 modified "2023-09-26" @default.
- W2010220545 title "Spectroscopic characterisation of rosasite and aurichalcite" @default.
- W2010220545 doi "https://doi.org/10.1127/0028-3649/2004/2004-0302" @default.
- W2010220545 hasPublicationYear "2004" @default.
- W2010220545 type Work @default.
- W2010220545 sameAs 2010220545 @default.
- W2010220545 citedByCount "9" @default.
- W2010220545 countsByYear W20102205452015 @default.
- W2010220545 countsByYear W20102205452016 @default.
- W2010220545 countsByYear W20102205452023 @default.
- W2010220545 crossrefType "journal-article" @default.
- W2010220545 hasAuthorship W2010220545A5016521961 @default.
- W2010220545 hasConcept C41008148 @default.
- W2010220545 hasConceptScore W2010220545C41008148 @default.
- W2010220545 hasIssue "7" @default.
- W2010220545 hasLocation W20102205451 @default.
- W2010220545 hasOpenAccess W2010220545 @default.
- W2010220545 hasPrimaryLocation W20102205451 @default.
- W2010220545 hasRelatedWork W2096946506 @default.
- W2010220545 hasRelatedWork W2130043461 @default.
- W2010220545 hasRelatedWork W2350741829 @default.
- W2010220545 hasRelatedWork W2358668433 @default.
- W2010220545 hasRelatedWork W2376932109 @default.
- W2010220545 hasRelatedWork W2382290278 @default.
- W2010220545 hasRelatedWork W2390279801 @default.
- W2010220545 hasRelatedWork W2748952813 @default.
- W2010220545 hasRelatedWork W2899084033 @default.
- W2010220545 hasRelatedWork W3004735627 @default.
- W2010220545 hasVolume "2004" @default.
- W2010220545 isParatext "false" @default.
- W2010220545 isRetracted "false" @default.
- W2010220545 magId "2010220545" @default.
- W2010220545 workType "article" @default.