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Hey, M. H., Embrey, P. G., Fejer, E. E. (1969) Crichtonite, a distinct species. Mineralogical Magazine, 37 (287) 349-356 doi:10.1180/minmag.1969.037.287.06

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Reference TypeJournal (article/letter/editorial)
TitleCrichtonite, a distinct species
JournalMineralogical Magazine
AuthorsHey, M. H.Author
Embrey, P. G.Author
Fejer, E. E.Author
Year1969 (September)Volume37
Issue287
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_37/37-287-349.pdf+
DOIdoi:10.1180/minmag.1969.037.287.06Search in ResearchGate
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Mindat Ref. ID6295Long-form Identifiermindat:1:5:6295:8
GUID0
Full ReferenceHey, M. H., Embrey, P. G., Fejer, E. E. (1969) Crichtonite, a distinct species. Mineralogical Magazine, 37 (287) 349-356 doi:10.1180/minmag.1969.037.287.06
Plain TextHey, M. H., Embrey, P. G., Fejer, E. E. (1969) Crichtonite, a distinct species. Mineralogical Magazine, 37 (287) 349-356 doi:10.1180/minmag.1969.037.287.06
In(1969, September) Mineralogical Magazine Vol. 37 (287) Mineralogical Society
Abstract/NotesSummaryConfusion over the status of crichtonite is due to the fact that de Bournon included two different minerals in his species: thin hexagonal plates are indeed ilmenite, as has been generally assumed, but the much rarer steep rhombohedra with basal plane are a separate species, with a distinctive X-ray powder pattern (three strongest lines: 3·39 Å,s; 2·875,s; 2·131,S) and a composition (Fe2+,Fe3+,Ti)1·71O3 with Fe2+:Fe3+:Ti near 8:7:33. There is a rhombohedral pseudo-cell containing three oxygens, with α 23° 19′, a 7·117 Å but there is some evidence of twinning, and the true symmetry is probably orthorhombic or lower.

Locality Pages

LocalityCitation Details
Saint-Christophe-en-Oisans, Grenoble, Isère, Auvergne-Rhône-Alpes, France

Mineral Pages

MineralCitation Details
Crichtonite


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