Cervelleite, Ag4TeS: solution and description of the crystal structure

dc.contributor.author Bindi, L.
dc.contributor.author Stanley, C. J.
dc.contributor.author Spry, Paul
dc.contributor.author Spry, Paul
dc.contributor.department Geological and Atmospheric Sciences
dc.date 2021-04-12T23:49:19.000
dc.date.accessioned 2021-04-30T08:17:04Z
dc.date.available 2021-04-30T08:17:04Z
dc.date.copyright Thu Jan 01 00:00:00 UTC 2015
dc.date.issued 2015-08-01
dc.description.abstract <p>Examination of the type specimen of cervelleite throws new light on its structure demonstrating how earlier researchers erred in describing the mineral as cubic. It was found to be monoclinic, space group P21/n, with a = 4.2696(4), b = 6.9761(5), c = 8.0423(7) Å, β = 100.332(6)°, V = 235.66(3) Å3, Z = 4. The crystal structure [R1 = 0.0329 for 956 reflections with I > 2σ(I)] is topologically identical to that of acanthite, Ag2S, and aguilarite, Ag4SeS. It can be described as a body-centered array of tetrahedrally coordinated X atoms (where X = S and Te) with Ag2X4 polyhedra in planes nearly parallel to (010); the sheets are linked by the other silver position (i.e., Ag1) that exhibits a three-fold coordination. Crystal-chemical features are discussed in relation to other copper and silver sulfides/tellurides, and pure metals. A SEM study of the cervelleite crystal used for the structural investigation showed that it is intergrown with an unnamed Ag2FeS2 phase in the type material.</p>
dc.description.comments <p>This is a manuscript of an article published as Bindi, L., Stanley, C.J. & Spry, P.G. Cervelleite, Ag4TeS: solution and description of the crystal structure. <em>Miner Petrol</em> 109, 413–419 (2015). doi:<a href="https://doi.org/10.1007/s00710-015-0384-4">10.1007/s00710-015-0384-4</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/ge_at_pubs/350/
dc.identifier.articleid 1362
dc.identifier.contextkey 22446989
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath ge_at_pubs/350
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/105081
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/ge_at_pubs/350/2015_Spry_CervelleiteSolution.pdf|||Fri Jan 14 23:44:27 UTC 2022
dc.source.uri 10.1007/s00710-015-0384-4
dc.subject.disciplines Geology
dc.subject.disciplines Mineral Physics
dc.subject.keywords cervelleite
dc.subject.keywords Ag-Te-S system
dc.subject.keywords Ag-Cu sulfotellurides
dc.subject.keywords crystal structure
dc.subject.keywords aguilarite
dc.subject.keywords acanthite
dc.title Cervelleite, Ag4TeS: solution and description of the crystal structure
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication a62262dd-880b-4366-b68a-552fccbdcab4
relation.isOrgUnitOfPublication 29272786-4c4a-4d63-98d6-e7b6d6730c45
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