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Braithwaite, R. S. W., Dunn, P. J., Pritchard, R. G., Paar, W. H. (1994) Iowaite, a re-investigation. Mineralogical Magazine, 58 (390) 79-85 doi:10.1180/minmag.1994.058.390.08

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Reference TypeJournal (article/letter/editorial)
TitleIowaite, a re-investigation
JournalMineralogical MagazineISSN0026-461X
AuthorsBraithwaite, R. S. W.Author
Dunn, P. J.Author
Pritchard, R. G.Author
Paar, W. H.Author
Year1994 (March)Volume58
Issue390
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_58/58-390-79.pdf+
DOIdoi:10.1180/minmag.1994.058.390.08Search in ResearchGate
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Mindat Ref. ID2005Long-form Identifiermindat:1:5:2005:7
GUID0
Full ReferenceBraithwaite, R. S. W., Dunn, P. J., Pritchard, R. G., Paar, W. H. (1994) Iowaite, a re-investigation. Mineralogical Magazine, 58 (390) 79-85 doi:10.1180/minmag.1994.058.390.08
Plain TextBraithwaite, R. S. W., Dunn, P. J., Pritchard, R. G., Paar, W. H. (1994) Iowaite, a re-investigation. Mineralogical Magazine, 58 (390) 79-85 doi:10.1180/minmag.1994.058.390.08
In(1994, March) Mineralogical Magazine Vol. 58 (390) Mineralogical Society
Abstract/NotesAbstractIowaite has been re-examined using new, well crystallized material from the Palabora open pit mine, Transvaal. Microprobe, carbon analyser and thermal analyses, powder and single-crystal X-ray diffraction, infrared, UV-visible and mass spectroscopic and optical studies were made. The ideal formula is (OH)16Cl2·4H2O. It is trigonal, R3̄m, a = 3.1183(9), c = 24.113(8) Å, V = 203.1(2) Å3, Z = 3/8; Dobs 2.09 g/cm3.; Dcalc 2.04 g/cm3; hardness (Mohs)=2 1/2. The interlayer Cl− ions are displaced from the threefold axis. It is uniaxial negative, with ω = 1.561 ± 0.002, ε = 1.543 ± 0.002; coloured crystals are intensely pleochroic, due to intervalence charge transfer between the Fe3+ and Fe2+ substituting for Mg2+, with O pale yellow, E deep blue-green.

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MineralCitation Details
Iowaite

Mineral Occurrences

LocalityMineral(s)
Palabora Mine, Phalaborwa, Ba-Phalaborwa Local Municipality, Mopani District Municipality, Limpopo, South Africaⓘ Antigorite, ⓘ Celestine, ⓘ Clinochlore, ⓘ Fluoborite, ⓘ Iowaite

See Also

These are possibly similar items as determined by title/reference text matching only.

Braithwaite, R. S. W., Pritchard, R. (1983) Nakauriite from Unst, Shetland. Mineralogical Magazine, 47 (342) 84-85 doi:10.1180/minmag.1983.047.342.17
Paar, W. H., Mereiter, Kurt, Braithwaite, R. S. W., Keller, Paul, Dunn, P. J. (1986) Chenite, Pb4Cu(SO4)2(OH)6, a new mineral, from Leadhills, Scotland. Mineralogical Magazine, 50 (355) 129-135 doi:10.1180/minmag.1986.050.355.17
Braithwaite, R. S. W., Ryback, G. (1994) Reichenbachite from Cornwall and Portugal. Mineralogical Magazine, 58 (392) 449-454 doi:10.1180/minmag.1994.058.392.09
Braithwaite, R. S. W., Pritchard, R. G., Paar, W. H., Pattrick, R. A. D. (2005) A new mineral, zincolibethenite, CuZnPO4OH, a stoichiometric species of specific site occupancy. Mineralogical Magazine, 69 (2) 145-153 doi:10.1180/0026461056920242
Braithwaite, R. S. W. (1982) A re-examination of the type forbesite. Mineralogical Magazine, 45 (337) 284-285 doi:10.1180/minmag.1982.045.337.33
Braithwaite, R. S. W., Paar, W. H., Chisholm, J. E. (1989) Phurcalite from Dartmoor, Southwest England, and its identity with ‘nisaite’ from Portugal. Mineralogical Magazine, 53 (373) 583-589 doi:10.1180/minmag.1989.053.373.09
Paar, W. H., Braithwaite, R. S. W., Chen, T. T., Keller, P. (1984) A new mineral, scotlandite (PbSO3) from Leadhills, Scotland; the first naturally occurring sulphite. Mineralogical Magazine, 48 (347) 283-288 doi:10.1180/minmag.1984.048.347.15
Braithwaite, R. S. W., Lamb, R. P. H. (1986) Wulfenite from Tŷ Coch, Glamorgan (Powys), South Wales. Mineralogical Magazine, 50 (355) 180-181 doi:10.1180/minmag.1986.050.355.27
Paar, W. H., Pring, A., Moëlo, Y., Stanley, C. J., Putz, H., Topa, D., Roberts, A. C., Braithwaite, R. S. W. (2009) Daliranite, PbHgAs2S6, a new sulphosalt from the Zarshouran Au-As deposit, Takab region, Iran. Mineralogical Magazine, 73 (5) 871-881 doi:10.1180/minmag.2009.073.5.871
Braithwaite, R. S. W., Knight, J. R. (1968) Serpierite from Ecton, Staffordshire. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (282) 882 doi:10.1180/minmag.1968.036.282.23
Braithwaite, R. S. W., Corke, Hilary (1980) Kidwellite from Cornwall. Mineralogical Magazine, 43 (331) 952-953 doi:10.1180/minmag.1980.043.331.25
 
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