 | HĂ„lenius, Ulf, HĂ€ussermann, Ulrich, Harryson, Hans (2005) Holtstamite, Ca3(Al,Mn3+)2(SiO4)3-x(H4O4)x, a new tetragonal hydrogarnet from Wessels Mine, South Africa. European Journal of Mineralogy, 17 (2) 375-382 doi:10.1127/0935-1221/2005/0017-0375 | Journal (article/letter/editorial) | | 375â382 Holtstamite, Ca3(Al,Mn3+)2(SiO4)3-x(H4O4)x, a new tetragonal hydrogarnet from Wessels Mine, South...South Africa ULF HĂ
LENIUS1, ULRICH HĂUSSERMANN2 and HANS HARRYSON3 1Department of Mineralogy, Swedish Museum...Abstract: A new tetragonal hydrogarnet from Wessels Mine, South Africa is described. The mineral occurs in a...Ca3Mn2(SiO4)2(OH)4, space group I41/acd. The new mineral, holtstamite, is optically uniaxial positive and shows lower...parameters of holtstamite are a = 12.337 (3) and c = 11.930 (5) Ă
. Extensive holtstamite-henritermierite |  | | Report (issue) | | Ca3(Al,Mn3+)2(SiO4)3-x(H4O4)x Holtstamite Crystal Data: Tetragonal. Point Group: 4/m 2/m 2/m. As rounded...Z=8 X-ray Powder Pattern: Wessels mine, Kalahari manganese field, South Africa. 2.743 (100), 1.614 (56)...30 36.76 7.87 99.61 (1) Wessels mine, Kalahari manganese field, South Africa; average of 15 electron...zoned with cores of henritermierite and rims of holtstamite. Occurrence: In a manganese-rich calc-silicate...henritermierite Distribution: Wessels mine, Kalahari manganese field, South Africa. Name: Honors Dr. Dan Holtstam |  | | Journal (issue) | | waters of the lake, the pine forested hills with local groves of bright yellow aspens, and the fantastically...and the police were summoned on two occasions. Local newscasts delighted in the story! The show status...southeast margin of the basin near the town of South Lake Tahoe. Stories had been heard long ago that...RETAIL So Easy to Find ... On Bristol Just South of the South Coast Plaza Shopping Center. Martin Zinn...hotel room rates typically double during the event (mine going from a standard $99 a night to an unwarranted |  | | Journal (article/letter/editorial) | | heulandite-Ba is the Northern RavnĂ„s prospect, southern Vinoren, Kongsberg ore district, Flesberg community...Bratteskjerpet mine, Saggrenda, and at Sjoa in Sel community, Oppland county. Heulandite-Ba at the Northern RavnĂ„s...âfahlbandsâ) which are roughly parallel to the north-south strike of the Precambrian rocks. The veins containing...33929). P.C.P. HOLTSTAMITE* U. HĂ„lenius, U. HĂ€ussermann, H. Harryson. (2005) Holtstamite, Ca3(Al,Mn3+)2(SiO4)3-x(H4O4)x...from Wessels Mine, South Africa. Eur. J. Mineral., 17, 375â382. Holtstamite from the Wessels Mine, South |  | Grew, E. S., Locock, A. J., Mills, S. J., Galuskina, I. O., Galuskin, E. V., HĂ„lenius, U. (2013) Nomenclature of the garnet supergroup. American Mineralogist, 98 (4) 785-811 doi:10.2138/am.2013.4201 | Journal (article/letter/editorial) | | two OH-bearing species (henritermierite and holtstamite) have tetragonal symmetry, space group, I41/acd...Oxide Ca3 Te26+ Zn3 O12 HENRITERMIERITE Silicate Holtstamite Ca3 Al2 Si2 | o O8(OH)4 Henritermierite Ca3...appearance exhibited by the supergroup. (a) Holtstamite, formula {Ca3}[Al,Mn3+ 2 ](Si2)(o)O8(OH)4, as...(white) in the holotype specimen from Wessels Mine, South Africa. Swedish Museum of Natural History specimen...on chromite, from the type locality, Saranovskii Mine, Permskaya Oblast, Middle Urals, Russia. Largest |  | | Journal (article/letter/editorial) | | (Gaudefroy et al., 1969) and the Kalahari Mine elds, Republic of South Africa (e.g. Cairncross et al., 1997)....#76) came from the Wessels mine and one (#97) originated from the NâChwaning II mine. Both localities are...Kalahari manganese  elds, South Africa. The three crystals from the Wessels mine were selected from a sample...hues with E>O. The crystals from the NâChwaning II mine were darker in colour and commonly euhedral. The...displayed similar pleochroism to those from the Wessels mine. Orientation of these crystals was aided by |  | Liu, Xiang-Wen, Xie, Zhan-Jun, Wang, Lu, Xu, Wei, Jin, Zhen-Min (2016) Water incorporation in garnets from ultrahigh pressure eclogites at Shuanghe, Dabieshan. Mineralogical Magazine, 80 (6) 959-975 doi:10.1180/minmag.2016.080.034 | Journal (article/letter/editorial) | | approved species of garnet (such as katoite, holtstamite and henritermierite) (Armbruster et al., 2001;...that this belt resulted from the subduction of the South China Block beneath the North China Block followed...Qinling orogen in the west (Fig. 1a). From north to south, the Dabie Block is divided into: (I) a low-grade...the X site is occupied by Ca, i.e. katoite, holtstamite and henritermierite. In summary, the H2O contents...garnets from the subcontinental mantle of southern Africa. Contributions to Mineralogy and Petrology, 111 |  | | Journal (issue) | | crystals from the Aris Phonolite Quarry (Windhoek District. Khomas Region. Namibia). In my view they are...collected April or May 2006 in the Cigana Mine (used to be Jocao Mine) (Galilea, Minas Gerais, âą Brasil). The...the vendors said the material comes from a copper mine - they are unusual in metamorphic, calc-silicic...malachite - which would go well with the "copper mine" explanation, but I did not like the fact that the...boulders were collected from a dump at a copper mine. Time will tell. By now I needed that beer ... beer |  | Buse, Ben, Schumacher, John C., Sparks, R. Stephen J., Field, Matthew (2010) Growth of bultfonteinite and hydrogarnet in metasomatized basalt xenoliths in the B/K9 kimberlite, Damtshaa, Botswana: insights into hydrothermal metamorphism in kimberlite pipes. Contributions to Mineralogy and Petrology, 160 (4) 533-550 doi:10.1007/s00410-010-0492-4 | Journal (article/letter/editorial) | | hydrothermal metamorphism in kimberlite pipes Ben Buse âą John C. Schumacher âą R. Stephen J. Sparks âą Matthew Field...B/K9 kimberlite with kimberlites from Venetia, South Africa suggests that the composition and mineralogy...and henritermierite [Ca3Mn2(SiO4)2 (OH)4] and holtstamite [Ca3(Al,Mn)2(SiO4)2(OH)4] (Meagher 1982; Laverne...in the Orapa District, and consists of three coalesced pipes (north, central and south), which separate...Drakensberg flood basalts, which covered much of southern Africa (Smith et al. 1993). The poorly phyric basalts |  | | Journal (article/letter/editorial) | | ] (SiO4)2(OH)4 (Armbruster et al., 2001) and holtstamite, {Ca3}[(Al,Mn3+)2](SiO4)2(OH)4 (HaÌlenius et...Geosciences 34 (2008) 1769â1780 tetragonal species holtstamite, {Ca3}[(Al,Mn3+)2](SiO4)2 (OH)4, is not an end-member...palenzonaite, a new vanadate garnet from Val Graveglia (Northern Apennines, Italy). Neues Jahrbuch fuÌr Mineralogie-Monatshefte...2005. Holtstamite, Ca3(Al,Mn3+)2(SiO4)3x (H4O4)x, a new tetragonal hydrogarnet from Wessels Mine, South...South Africa. European Journal of Mineralogy 17, 375â382. Hawthorne, F.C., 1981. Some systematics of the |  | Lacivita, Valentina, Mahmoud, Agnes, Erba, Alessandro, DâArco, Philippe, Mustapha, Sami (2015) Hydrogrossular, Ca3Al2(SiO4)3âx(H4O4)x: An ab initio investigation of its structural and energetic properties. American Mineralogist, 100 (11) 2637-2649 doi:10.2138/am-2015-5334 | Journal (article/letter/editorial) | | compositions imply necessarily certain lowering of the local symmetry. Despite this, all 136 atomic configurations...encountered between n = 7 and n = 8 that makes n = 8 a local minimum. The presence of two minima indicates that...the SiO4 unit. Figure 7 shows the detail of the local rearrangement. H3 flips toward O1âČ with a dramatic...on the tetrahedra distribution of the enthalpy local minimum at n = 8, which corresponds to stoichiometry...183â185. Frankel, J.J. (1959) Uvarovite garnet and South African jade (hydrogrossular) from the Bushveld |  | | Journal (article/letter/editorial) | | massive, birefringent hydrogarnet samples from South Africa [1. green âjadeâ and 2. pink âjadeâ] were carried...*13. Henritermierite 12.489 0.75(3) *14. Holtstamite 12.337 0.79(8) *15. (F,OH)-spessartine 11...from (1) Bushveld Igneous Complex, Transvaal, South Africa Phys Chem Minerals 13 Phys Chem Minerals...massive green âjadeâ) and (2) Brits, Transvaal, South Africa (M27945; massive pink âjadeâ). The term âjadeâ...âjadeâ samples from the Bushveld Igneous Complex, South Africa, were studied by several researchers (e.g., |  | | Book | | alteration of different kinds of stacking of layers, local defects, etc. â see Chukanov 2014a). Ă°1:1Ă where...MĂŒller (1995) 14 convincing taking into account local charge balance requirements. Natural metasomatic...implied that each OâH-stretching band corresponds to local vibrations of a single OH group. Really, in case...of a mantle zircon Zr(SiO4) from Kimberley, South Africa demonstrate the presence of two kinds of differently...(2014) (see Table 1.4). It was concluded that in local environments involving empty A sites the OHâOH and |
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