Matches in SemOpenAlex for { <https://semopenalex.org/work/W2623620103> ?p ?o ?g. }
Showing items 1 to 60 of
60
with 100 items per page.
- W2623620103 endingPage "105" @default.
- W2623620103 startingPage "97" @default.
- W2623620103 abstract "Shabaite-(Nd) is a rare supergene mineral formed during alteration-hydration weathering of uraninite; its structure has remained unknown until now. Based on single-crystal X-ray diffraction data, shabaite-(Nd) is triclinic, twinned (leading to a pseudo-monoclinic diffraction pattern), space group P-1, with a = 8.3835(5), b = 9.2766(12), c = 31.7519(3) angstrom, alpha = 90.058(3), beta = 89.945(4), gamma = 90.331(4)degrees, V = 2469.3(4) angstrom(3) and Z = 4. The structure was refined from diffraction data to R = 0.060 for 8434 unique observed reflections. The structure of shabaite-(Nd) is based upon finite clusters of polyhedra, the well-known uranyl-tricarbonate cluster (referred to as UTC), the Ca-polyhedra linked to UTC and infinite sheets of Nd-polyhedra with internal Nd-O-C linkages. The infinite sheets of Nd-polyhedra are stacked perpendicular to c; to the UTC are staggered approximately perpendicular to the Nd-based sheets (thus approx. parallel to c), forming electroneutral ({Nd-2(3+)(CO3)(2-)(2)(H2O)(2)}(2+){Ca(H2O)(5)}(2+)[(UO2)(CO3)(3)](4-))(0) layers. Adjacent layers are linked by hydrogen bonds. The ratio of elements in the chemical formula of shabaite-(Nd), obtained from the structure refinement, Nd2Ca[(UO2)(CO3)(3)] (CO3)(2)(H2O)(10.5), Z = 4, was confirmed by an electron-microprobe study. The resulting empirical formula for the average of six analyses is Ca-1.01(Nd0.64Ce0.32Sm0.28Gd0.19Y0.19Pr0.13Dy0.10La0.07Tb0.05Ho0.01)(Sigma 1.98)(UO2)(CO3)(4.98)(H2O)(10.5)(based on 1 U apfu). A discussion of the crystal-structural relationships of shabaite-(Nd) and chemically related minerals is given as well as discussion of complexities of their crystal structures." @default.
- W2623620103 created "2017-06-15" @default.
- W2623620103 creator A5059146379 @default.
- W2623620103 creator A5080737105 @default.
- W2623620103 date "2017-06-07" @default.
- W2623620103 modified "2023-10-18" @default.
- W2623620103 title "Crystal structure of the (REE)-uranyl carbonate mineral shabaite-(Nd)" @default.
- W2623620103 doi "https://doi.org/10.3190/jgeosci.232" @default.
- W2623620103 hasPublicationYear "2017" @default.
- W2623620103 type Work @default.
- W2623620103 sameAs 2623620103 @default.
- W2623620103 citedByCount "3" @default.
- W2623620103 countsByYear W26236201032019 @default.
- W2623620103 countsByYear W26236201032020 @default.
- W2623620103 countsByYear W26236201032021 @default.
- W2623620103 crossrefType "journal-article" @default.
- W2623620103 hasAuthorship W2623620103A5059146379 @default.
- W2623620103 hasAuthorship W2623620103A5080737105 @default.
- W2623620103 hasBestOaLocation W26236201031 @default.
- W2623620103 hasConcept C127313418 @default.
- W2623620103 hasConcept C17409809 @default.
- W2623620103 hasConcept C191897082 @default.
- W2623620103 hasConcept C192562407 @default.
- W2623620103 hasConcept C199289684 @default.
- W2623620103 hasConcept C2776432453 @default.
- W2623620103 hasConcept C2778468930 @default.
- W2623620103 hasConcept C2779002002 @default.
- W2623620103 hasConcept C2780181037 @default.
- W2623620103 hasConcept C2780659211 @default.
- W2623620103 hasConcept C555451288 @default.
- W2623620103 hasConceptScore W2623620103C127313418 @default.
- W2623620103 hasConceptScore W2623620103C17409809 @default.
- W2623620103 hasConceptScore W2623620103C191897082 @default.
- W2623620103 hasConceptScore W2623620103C192562407 @default.
- W2623620103 hasConceptScore W2623620103C199289684 @default.
- W2623620103 hasConceptScore W2623620103C2776432453 @default.
- W2623620103 hasConceptScore W2623620103C2778468930 @default.
- W2623620103 hasConceptScore W2623620103C2779002002 @default.
- W2623620103 hasConceptScore W2623620103C2780181037 @default.
- W2623620103 hasConceptScore W2623620103C2780659211 @default.
- W2623620103 hasConceptScore W2623620103C555451288 @default.
- W2623620103 hasLocation W26236201031 @default.
- W2623620103 hasOpenAccess W2623620103 @default.
- W2623620103 hasPrimaryLocation W26236201031 @default.
- W2623620103 hasRelatedWork W1488754577 @default.
- W2623620103 hasRelatedWork W1649145571 @default.
- W2623620103 hasRelatedWork W1982985273 @default.
- W2623620103 hasRelatedWork W2103368495 @default.
- W2623620103 hasRelatedWork W2332269152 @default.
- W2623620103 hasRelatedWork W2361147406 @default.
- W2623620103 hasRelatedWork W2373325086 @default.
- W2623620103 hasRelatedWork W2398733957 @default.
- W2623620103 hasRelatedWork W2500719930 @default.
- W2623620103 hasRelatedWork W3043027343 @default.
- W2623620103 isParatext "false" @default.
- W2623620103 isRetracted "false" @default.
- W2623620103 magId "2623620103" @default.
- W2623620103 workType "article" @default.