 | Mills, S. J., Whitfield, P. S., Wilson, S. A., Woodhouse, J. N., Dipple, G. M., Raudsepp, M., Francis, C. A. (2011) The crystal structure of stichtite, re-examination of barbertonite, and the nature of polytypism in MgCr hydrotalcites. American Mineralogist, 96 (1) 179-187 doi:10.2138/am.2011.3531 | Journal (article/letter/editorial) | | pages 179–187, 2011 The crystal structure of stichtite, re-examination of barbertonite, and the nature...02138, U.S.A. abStraCt Stichtite, ideally Mg6Cr2CO3(OH)16∙4H2O, from Stichtite Hill, Tasmania, Australia...Mg6Cr2CO3(OH)16∙4H2O, from the Kaapsehoop asbestos mine, South Africa, have been studied by powder X-ray diffraction...been refined using the Rietveld method. Stichtite from Stichtite Hill crystallizes in the rhombohedral...intergrown mixtures consisting of barbertonite and stichtite. Unit-cell parameters of barbertonite from the |  | | Report (issue) | | SURVEY OF SOUTH AFRICA COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA MINERALOGY OF SOUTH AFRICA:... COUNCIL FOR GEOSCIENCE GEOLOGICAL SURVEY OF SOUTH AFRICA Scientific Editor R.D. Dixon Linguistic and...Council for Geoscience (Geological Survey of South Africa), 280 Pretoria Street, Silverton, Pretoria or........................... 69 5.1 Overview of South African Occurrences ..............................LAYEREDSUITE,BUSHVELDCOMPLEX.... 111 MINERALOGY OF SOUTH AFRICA: TYPE-MINERAL SPECIES AND TYPE-MINERAL NAMES |  | | Journal (article/letter/editorial) | | on Structure and Threshold Detection Limits of Stichtite (Magnesium-Chromium Carbonate-Hydroxide) by Fourier... Abstract: Spectral features for natural stichtite at 1042, 1096, 1360, 1638, and 3482 cm−1 provide...water. These Infrared (IR) data suggest natural stichtite forms at a pH of >12 with increased water and...observed ranges of non-end member compositions in stichtite from localities around the world, and across geologic...geologic time. This constrains stichtite formation to a range of very high pH conditions and is consistent |  | | Journal (article/letter/editorial) | | reported from the famous ancient Lavrion mining district in Greece. The empirical formula of agardite-(Nd)...C.A. Francis, (2011) The crystal structure of stichtite, re-examination of barbertonite, and the nature...Kaapsehoop asbestos mine, Kaapsehoop, Barberton district, Mpumalanga, South Africa. Unit-cell parameters of barbertonite...76(1) Å3, Z = ¼. Rietveld refinements of both stichtite and barbertonite show that they are polytypes...distinct mineral species. Therefore, because stichtite has historical priority (1914) over barbertonite |  | Mills, S. J., Christy, A. G., Génin, J.-M. R., Kameda, T., Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76 (5) 1289-1336 doi:10.1180/minmag.2012.076.5.10 | Journal (article/letter/editorial) | | these minerals are the 2H polytypes of hydrotalcite, pyroaurite and stichtite, respectively. Cyanophyllite...favoured electrostatically. It seems likely that local ordering of M2+ and M3+ occurs to prevent the formation...layers are offset in a disordered fashion, the local ordering may not be reflected in the unit cell determined...pyroaurite/sjögrenite (Ingram and Taylor, 1967), stichtite (Mills et al., 2011), chlormagaluminite (Kashaev...of octahedral cations. For example, ‘quinitinite-2H-3c’ of Krivovichev et al. (2010a) has an overall |
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Barberton, Mbombela Local Municipality, Ehlanzeni District Municipality, Mpumalanga, South Africa