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Journal articles on the topic 'Tsumeb'

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Published: 4 June 2021
Last updated: 3 February 2022

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1

Cairncross, Bruce. "Connoisseur's Choice: Leiteite, Tsumeb Mine, Tsumeb, Namibia." Rocks & Minerals 92, no. 3 (2017): 264–69. http://dx.doi.org/10.1080/00357529.2017.1283661.

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Cook, Robert B., Benjamin E. Nicolson, and Ian R. Bruce. "Tsumeb—200." Rocks & Minerals 77, no. 1 (2002): 18–24. http://dx.doi.org/10.1080/00357529.2002.9926651.

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3

Pohwat, Paul W. "Connoisseur's Choice: Willemite, Tsumeb Mine, Tsumeb, Otjikoto, Namibia." Rocks & Minerals 90, no. 4 (2015): 358–65. http://dx.doi.org/10.1080/00357529.2015.1034493.

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Pohwat, Paul W. "Connoisseur's Choice: Conichalcite, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia." Rocks & Minerals 90, no. 6 (2015): 552–59. http://dx.doi.org/10.1080/00357529.2015.1080536.

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Ludeman, Frank. "Letters: TSUMEB Update." Rocks & Minerals 76, no. 2 (2001): 87. http://dx.doi.org/10.1080/00357520109603199.

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6

Schlüter, Jochen, Karl-Heinz Klaska, Gunadi Adiwidjaja, and Georg Gebhard. "Tsumgallite, GaO(OH), a new mineral from the Tsumeb mine, Tsumeb, Namibia." Neues Jahrbuch für Mineralogie - Monatshefte 2003, no. 11 (2003): 521–27. http://dx.doi.org/10.1127/0028-3649/2003/2003-0521.

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7

Southwood, Malcolm. "Wulfenite from Tsumeb, Namibia." Rocks & Minerals 94, no. 1 (2018): 70–83. http://dx.doi.org/10.1080/00357529.2019.1519677.

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8

Cook, Robert B. "Connoisseur'sChoice: Cerussite, Tsumeb, Namibia." Rocks & Minerals 72, no. 3 (1997): 176–80. http://dx.doi.org/10.1080/00357529709605035.

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9

Cook, Robert B. "Connoisseur's Choice: Mimetite, Tsumeb, Namibia." Rocks & Minerals 76, no. 2 (2001): 114–17. http://dx.doi.org/10.1080/00357520109603204.

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Cook, Robert B. "Connoisseur's Choice: Smithsonite, Tsumeb, Namibia." Rocks & Minerals 75, no. 3 (2000): 176–79. http://dx.doi.org/10.1080/00357520009605637.

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11

Cook, Robert B. "Connoisseur's Choice: Dioptase, Tsumeb, Namibia." Rocks & Minerals 77, no. 3 (2002): 176–80. http://dx.doi.org/10.1080/00357529.2002.9926680.

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Pohwat, Paul W. "Connoisseur's Choice: Tennantite, Tsumeb, Namibia." Rocks & Minerals 86, no. 4 (2011): 330–37. http://dx.doi.org/10.1080/00357529.2011.583601.

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13

Bowell, Robert J., and Janet H. Clifford. "Connoisseur's Choice: Leadhillite, Tsumeb, Namibia." Rocks & Minerals 89, no. 4 (2014): 354–63. http://dx.doi.org/10.1080/00357529.2014.904665.

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Southwood, Malcolm. "Connoisseur's Choice: Stottite, Tsumeb, Namibia." Rocks & Minerals 90, no. 5 (2015): 440–43. http://dx.doi.org/10.1080/00357529.2015.1059082.

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15

Currier, Rock H. "Collector's Note: Leadhillite from Tsumeb." Rocks & Minerals 90, no. 2 (2015): 185–86. http://dx.doi.org/10.1080/00357529.2015.997162.

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Southwood, Malcolm. "Connoisseur's Choice: Reinerite, Tsumeb, Namibia." Rocks & Minerals 91, no. 4 (2016): 346–51. http://dx.doi.org/10.1080/00357529.2016.1172175.

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17

Southwood, Malcolm. "Connoisseur's Choice: Ekatite, Tsumeb, Namibia." Rocks & Minerals 93, no. 6 (2018): 524–27. http://dx.doi.org/10.1080/00357529.2018.1502581.

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18

Southwood, Malcolm. "Connoisseur's Choice: Minrecordite, Tsumeb, Namibia." Rocks & Minerals 95, no. 1 (2019): 42–47. http://dx.doi.org/10.1080/00357529.2020.1670563.

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Southwood, Malcolm. "Connoisseur's Choice: Alamosite, Tsumeb, Namibia." Rocks & Minerals 96, no. 2 (2021): 158–63. http://dx.doi.org/10.1080/00357529.2021.1848218.

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20

Cairncross, Bruce. "Connoisseur's Choice: Tsumcorite, Tsumeb Mine, Namibia." Rocks & Minerals 92, no. 5 (2017): 454–63. http://dx.doi.org/10.1080/00357529.2017.1331397.

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21

Cairncross, Bruce. "Connoisseur's Choice: Hydrocerussite, Tsumeb Mine, Namibia." Rocks & Minerals 93, no. 2 (2018): 150–57. http://dx.doi.org/10.1080/00357529.2018.1405220.

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22

Southwood, Malcolm, and James Robison. "Dolomite “Casts” and Epimorphs From Tsumeb, Namibia." Rocks & Minerals 91, no. 4 (2016): 334–45. http://dx.doi.org/10.1080/00357529.2016.1172174.

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23

Southwood, Malcolm, Martin Števko, and Paul Carr. "Tsumeb: Zincolivenite and the Adamite-Olivenite Series." Rocks & Minerals 95, no. 3 (2020): 210–33. http://dx.doi.org/10.1080/00357529.2020.1716168.

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24

FLÜCKIGER, E. O., R. BÜTIKOFER, A. CHILINGARIAN, et al. "SOLAR NEUTRON EVENTS THAT HAVE BEEN FOUND IN SOLAR CYCLE 23." International Journal of Modern Physics A 20, no. 29 (2005): 6646–49. http://dx.doi.org/10.1142/s0217751x05029691.

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25

Starik, Nicole, Oskar Kandali Mbango, Susanne Bengsch, Thomas Göttert, and Ulrich Zeller. "Landscape Transformation Influences Responses of Terrestrial Small Mammals to Land Use Intensity in North-Central Namibia." Diversity 12, no. 12 (2020): 488. http://dx.doi.org/10.3390/d12120488.

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In this study, we investigate and compare the response patterns of small mammal communities to increasing land use intensity in two study areas: private farmland at the southern boundary of Etosha National Park and smallholder farmland in Tsumeb agricultural area. Species richness, community composition and a standardized capture index (RCI) are compared between sites of (a) increasing grazing pressure of ungulates (Etosha) and (b) increasing conversion of bushland to arable land (Tsumeb). Within each study area, we found clear response patterns towards increasing land use intensity. However, patterns differ significantly between the two areas. Within the less-transformed area (Etosha), high land use intensity results in a decrease in the RCI but not species richness. Small mammal communities remain relatively stable, but ecosystem functions (e.g., bioturbation, seed dispersal) are weakened. Within the more-transformed area (Tsumeb), high land use intensity leads to a decrease in species richness and increasing RCIs of two common pest species. The disappearance of a balanced community and the dramatic increase in a few pest species has the potential to threaten human livelihoods (e.g., crop damage, disease vectors). Our comparative approach clearly indicates that Gerbilliscus leucogaster is a possible candidate for an ecological indicator of ecosystem integrity. Mastomys natalensis has the potential to become an important pest species when bushland is transformed into irrigated arable land. Our results support the importance of area-specific conservation and management measures in savanna ecosystems.
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26

Southwood, Malcolm, Raquel Alonso-Perez, and Ernst A. Schnaitmann. "Tsumeb: The Legacy of Wilhelm Klein (1889–1939)." Rocks & Minerals 93, no. 6 (2018): 528–55. http://dx.doi.org/10.1080/00357529.2018.1502582.

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27

Cairncross, Bruce. "Connoisseur's Choice: Duftite after Wulfenite, Tsumeb Mine, Namibia." Rocks & Minerals 94, no. 1 (2018): 54–59. http://dx.doi.org/10.1080/00357529.2019.1519674.

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28

QUINN, STEPHANIE. "INFRASTRUCTURE, ETHNICITY, AND POLITICAL MOBILIZATION IN NAMIBIA, 1946–87." Journal of African History 61, no. 1 (2020): 45–66. http://dx.doi.org/10.1017/s0021853720000031.

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AbstractThis article uses the copper mining town Tsumeb to examine urban infrastructure, ethnicity, and African political solidarities in apartheid Namibia. To translate apartheid to Namibia, South Africa re-planned Namibian towns to reinforce colonial divisions between two classes of African laborers: mostly Ovambo migrant laborers from northern Namibia and Angola and, secondly, ethnically diverse laborers from the zone of colonial settlement and investment, the Police Zone. Housing and infrastructure were key to this social engineering project, serving as a conduit for official and company ideas about ‘Ovambo’ and Police Zone laborers. Yet Africans’ uses of infrastructure and ethnic discourses challenged, and provoked debates about the boundaries of urban social and political belonging. Between the 1971–2 general strike of northern contract workers and the 1987 strike against the multinational Tsumeb Corporation Limited, which involved northern contract workers and community members, Africans built a political community that challenged both company and colonial state.
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29

Jambor, J. L., A. C. Roberts, L. A. Groat, C. J. Stanley, A. J. Criddle, and M. N. Feinglos. "CALVERTITE, Cu5Ge0.5S4, A NEW MINERAL SPECIES FROM TSUMEB, NAMIBIA." Canadian Mineralogist 45, no. 6 (2007): 1519–23. http://dx.doi.org/10.3749/canmin.45.6.1519.

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30

Roberts, Andrew C., John L. Jambor, and Joel D. Grice. "The X-Ray Crystallography of Rosasite From Tsumeb, Namibia." Powder Diffraction 1, no. 1 (1986): 56–57. http://dx.doi.org/10.1017/s0885715600011301.

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AbstractCrystals of green to bluish green rosasite from Tsumeb, Namibia are monoclinic, space group P21/a, with refined unit-cell parameters a = 12.873 (3), b = 9.354 (3), c = 3.156 (2) A, β = 110.36 (3)°, V = 356.3 (5) A3 and a:b:c = 1.3762:1:0.3374, with Z = 4 and Dx = 4.15 g./cm.3. Crystals are twinned by 180° rotation about a*. A fully indexed powder pattern is presented. Electron-microprobe analyses, average (wt. %): Cu 32.9, Zn 23.7; this suggests an analytical formula of (Cu1·18 Zn0·82) (CO3) (OH)2. The rosasite is optically biaxial negative, α = 1.673 (1), β = 1.796 (3), γ = 1.811 (3), 2Vx = 33 (5)° (calc. 36.4°), with X = c, Y = a* and Z = b.
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31

Cook, Robert B. "Connoisseur's Choice: Azurite: Tsumeb, Namibia, and Touissit, Oujda, Morocco." Rocks & Minerals 77, no. 1 (2002): 40–43. http://dx.doi.org/10.1080/00357529.2002.9926655.

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32

Cairncross, Bruce. "The Where of Mineral Names: Tsumebite, Tsumeb Mine, Namibia." Rocks & Minerals 92, no. 5 (2017): 466–72. http://dx.doi.org/10.1080/00357529.2017.1331402.

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33

Bowell, R. J. "Hydrogeochemistry of the Tsumeb Deposit: Implications for Arsenate Mineral Stability." Reviews in Mineralogy and Geochemistry 79, no. 1 (2014): 589–627. http://dx.doi.org/10.2138/rmg.2014.79.14.

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34

Clark, A. M., A. J. Criddle, A. C. Roberts, M. Bonardi, and E. A. Moffatt. "Feinglosite, a new mineral related to brackebuschite, from Tsumeb, Namibia." Mineralogical Magazine 61, no. 405 (1997): 285–89. http://dx.doi.org/10.1180/minmag.1997.061.405.11.

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AbstractFeinglosite, the zinc analogue of arsenbrackebuschite, was found lining a cavity in a sample of massive chalcocite from Tsumeb, Namibia. In this cavity it is associated with wulfenite, anglesite and goethite. The mean of seven electron-microprobe analyses (wt.%) is: PbO 61.4, ZnO 7.3, FeO 1.8, As2O5 22.1, SO3 5.3, H2O (by difference) [2.1], total = [100.00]%, leading to the ideal formula: Pb2(Zn,Fe)[(As,S)O4]·H2O. Feinglosite is monoclinic, space group P21 or P21/m, a 8.973(6), b 5.955(3), c 7.766(6) Å, β 112.20(6)°, with Z = 2. The strongest five reflections of the X-ray powder diffraction pattern are [d in Å (I) (hkl)]: 4.85 (50) (110), 3.246 (100) (112), 2.988 (60) (301), 2.769 (60) (300/211), 2.107 (50) (321). The mineral is pale olive-green, transparent, sectile, and has a white streak and adamantine lustre. It overgrows clusters of goethite crystals and forms globular microcrystalline aggregates up to 0.5–0.75mm in size. The hardness on Mohs' scale is 4–5: the mean micro-indentation hardness is 263 at VHN100. Its calculated density is 6.52 g cm−3. The mineral is pale brownish grey in reflected light (when compared with goethite). Visible spectrum reflectance data are presented. Feinglosite is named for Mark N. Feinglos who first recognised the mineral on a specimen in his collection.
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35

Mills, S. J., A. R. Kampf, M. Raudsepp, and A. G. Christy. "The crystal structure of Ga-rich plumbogummite from Tsumeb, Namibia." Mineralogical Magazine 73, no. 5 (2009): 837–45. http://dx.doi.org/10.1180/minmag.2009.073.5.837.

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AbstractGa-rich plumbogummite, (Pb0.87,Ca0.13)Σ1.00H(Al1.95,Ga1.05)Σ3.00(PO4)2(OH)6, from Tsumeb, Namibia, has rhombohedral symmetry, space group Rm, with the cell parameters a = 7.0752(19) Å, c = 16.818(4) Å and V = 729.1(3) Å3. The crystal structure has been refined to R1 = 2.05%. Ga-rich plumbogummite has an alunite-type structure comprised of a rhombohedral stacking of (001) composite layers of corner-shared (Al,Ga)O6 octahedra and PO4 tetrahedra, with Pb atoms occupying icosahedrally coordinated sites between the layers. The Pb and H positions are discussed. Ga-rich plumbogummite is nonpleochroic, uniaxial (+), with indices of refraction, ε = 1.742(3) and ω = 1.722(3), determined in white light. The five strongest powder-diffraction lines [d in Å, (I/I°), (hkl)] are: 2.995, (100), (113); 5.766, (95), (101); 2.236, (43), (107, 122); 3.539, (38), (110); 1.919 (32), (303, 033).
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36

Cairncross, Bruce. "Connoisseur's Choice: Mimetite after Cerussite (Part 2), Tsumeb Mine, Namibia." Rocks & Minerals 96, no. 4 (2021): 352–57. http://dx.doi.org/10.1080/00357529.2021.1901209.

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37

Keller, Paul, Falk Lissner, and Thomas Schleid. "The crystal structure of arsendescloizite, PbZn(OH)AsO4, from Tsumeb (Namibia)." Neues Jahrbuch für Mineralogie - Monatshefte 2003, no. 8 (2003): 374–84. http://dx.doi.org/10.1127/0028-3649/2003/2003-0374.

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38

Kampf, Anthony R., Stuart J. Mills, and William W. Pinch. "Plumboselite, Pb3O2(SeO3), a new oxidation-zone mineral from Tsumeb, Namibia." Mineralogy and Petrology 101, no. 1-2 (2010): 75–80. http://dx.doi.org/10.1007/s00710-010-0137-3.

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39

Neuhold, F., U. Kolitsch, H. J. Bernhardt, and C. L. Lengauer. "Arsenohopeite, a new zinc arsenate mineral from the Tsumeb mine, Namibia." Mineralogical Magazine 76, no. 3 (2012): 603–12. http://dx.doi.org/10.1180/minmag.2012.076.3.11.

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AbstractArsenohopeite, ideally Zn3(AsO4)2·4H2O, is the arsenate analogue of hopeite, Zn3(PO4)2·4H2O (it is isostructural with α-hopeite). It was found as a single colourless to blue crystalline grain from the Tsumeb mine, Namibia. The holotype specimen is ∼1 × 1 × 1 mm in size. Arsenohopeite is associated with tiny white fibres of an unidentified Zn- and As-bearing phase. It is orthorhombic, space group Pnma, with a = 10.804(2), b = 19.003(4), c = 5.112(1) Å, V = 1049.5(4) Å3 and Z = 4. Electron microprobe analysis yielded: ZnO 44.92, Fe2O3 0.92, MnO 0.51, MgO 0.20, CuO 0.02, As2O5 45.84 (wt.%). The empirical formula is (Zn2.80Fe0.06Mn0.04Mg0.03)Σ2.93(As1.01O4)2·4H2O, based on 12 oxygen atoms. Optically, the mineral is biaxial negative, with α = 1.598(2), β = 1.606(2), γ = 1.613(2) (white light) and 2Vcalc = 86°. It is not pleochroic or fluorescent. Arsenohopeite is translucent with a vitreous lustre. It is brittle, has an uneven fracture and (by analogy with hopeite) a cleavage that is perfect on {010}, good on {100} and poor on {001}. The calculated density is 3.420 g cm–3. The five strongest calculated powder diffraction lines are [d in Å (I)(hkl)]: 9.502 (100)(020), 2.926 (95)(241), 4.937 (50)(011), 4.110 (48)(230) and 3.567 (31)(240). The crystal structure of arsenohopeite has been solved by direct methods and refined in space group Pnma to R1 = 0.0353. Raman spectroscopy confirms the crystal-structure data and indicates the presence of weak hydrogen bonds.
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40

Karapetyan, G. G. "Investigation of cosmic ray anisotropy based on Tsumeb neutron monitor data." Astroparticle Physics 33, no. 3 (2010): 146–50. http://dx.doi.org/10.1016/j.astropartphys.2010.01.001.

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41

Ettler, Vojtěch, Zdenek Johan, Bohdan Kříbek, Ondřej Šebek, and Martin Mihaljevič. "Mineralogy and environmental stability of slags from the Tsumeb smelter, Namibia." Applied Geochemistry 24, no. 1 (2009): 1–15. http://dx.doi.org/10.1016/j.apgeochem.2008.10.003.

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42

Roberts, A. C., T. M. Seward, E. Reusser, et al. "EYSELITE, Fe3+Ge4+ 3O7(OH), A NEW MINERAL SPECIES FROM TSUMEB, NAMIBIA." Canadian Mineralogist 42, no. 6 (2004): 1771–76. http://dx.doi.org/10.2113/gscanmin.42.6.1771.

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43

Welch, M. D., M. A. Cooper, and F. C. Hawthorne. "The crystal structure of brunogeierite, Fe2GeO4 spinel." Mineralogical Magazine 65, no. 3 (2001): 441–44. http://dx.doi.org/10.1180/002646101300119529.

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AbstractBrunogeierite, Fe2GeO4, a = 8.4127(7) Å, V = 595.4(1) Å3, is a rare germanate spinel from Tsumeb, Namibia. Its structure has been refined to an R index of 2.2%. The oxygen parameter, u, is 0.2466(1), indicating nearly ideal cubic close-packing of oxygen atoms. There is exact agreement between the observed a unit-cell dimension and that calculated from the observed Ge–O and Fe–O bond lengths. The cations Ge and Fe are fully ordered at tetrahedral (A) and octahedral (B) sites, respectively, in keeping with synthetic germanate spinels, all of which are fully-ordered normal spinels.
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44

Origlieri, Marcus J., and Robert T. Downs. "Schaurteite, Ca3Ge(SO4)2(OH)6·3H2O." Acta Crystallographica Section E Structure Reports Online 69, no. 2 (2013): i6. http://dx.doi.org/10.1107/s1600536812050945.

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This report presents the first crystal structure determination of the mineral schaurteite, ideally Ca3Ge(SO4)2(OH)6·3H2O, tricalcium germanium bis(sulfate) hexahydroxide trihydrate. This single-crystal X-ray diffraction study investigated a natural sample from the type locality at Tsumeb, Namibia. Schaurteite is a member of the fleischerite group of minerals, which also includes fleischerite, despujolsite, and mallestigite. The structure of schaurteite consists of slabs of Ca(O,OH,H2O)8polyhedra (site symmetrymm2) interleaved with a mixed layer of Ge(OH)6octahedra (-3m.) and SO4tetrahedra (3m.). There are two H atoms in the asymmetric unit, both located by full-matrix refinement, and both forming O—H...O hydrogen bonds.
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45

Schlüter, Jochen, Thomas Malcherek, and Georg Gebhard. "Vanackerite, a new lead cadmium arsenate of the apatite supergroup from Tsumeb, Namibia." Neues Jahrbuch f??r Mineralogie - Abhandlungen: Journal of Mineralogy and Geoche 193, no. 1 (2016): 79–86. http://dx.doi.org/10.1127/njma/2015/0294.

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46

Keller, Paul, Falk Lissner, and Thomas Schleid. "The crystal structures of zincroselite and gaitite: Two natural polymorphs of Ca2ZnAsO422H2O from Tsumeb, Namibia." European Journal of Mineralogy 16, no. 2 (2004): 353–59. http://dx.doi.org/10.1127/0935-1221/2004/0016-0353.

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47

Enkono, Angula Nahas, and Alfons W. Mosimane. "An Assessment of Water Accessibility in the Kuvukiland Informal Settlement of Tsumeb in Namibia." Journal of Sustainable Development 9, no. 5 (2016): 10. http://dx.doi.org/10.5539/jsd.v9n5p10.

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<span lang="EN-US">Challenges of water supply in informal settlements have been observed in different parts of the world. This study evaluates accessibility to water in the Kuvukiland informal settlement. The study employed two methods</span><span lang="EN-ZA">:</span><span lang="EN-US"> a semi structured questionnaire and in-depth interviews. Semi-structured questionnaire was used to collect the data from 50 respondents in the Kuvukiland informal settlement, and the in-depth interviews were carried out with five key informants. The findings suggest that access to water in informal settlements is a challenge, because more than half of the population in Kuvukiland live more than a kilometre from the water points. Further findings also show that affordability is a critical issue, because the more than half of the population are unemployed, and as a result they cannot afford to pay for water. Finally the findings are that, water supply in Kuvukiland does not follow an integrated water resource management approach. In addition, there is poor community involvement, and stakeholder participation is weak.</span>
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48

Flynn, Shields, Isabel F. Barton, and Mark Feinglos. "Munakataite, Pb2Cu2(Se4+O3)(SO4)(OH)4, and Other Selenium Minerals from Tsumeb, Namibia." Rocks & Minerals 91, no. 6 (2016): 548–53. http://dx.doi.org/10.1080/00357529.2016.1217470.

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49

Falls, R., B. Cannon, and J. A. Mandarino. "Schultenite from King County, Washington, USA; a second occurrence, and review." Mineralogical Magazine 49, no. 350 (1985): 65–69. http://dx.doi.org/10.1180/minmag.1985.049.350.08.

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AbstractSchultenite, PbHAsO4, known only from Tsumeb, Namibia, has been identified from a second occurrence: near North Bend, King County, Washington, USA. It occurs as euhedral crystals in a quartz-arsenopyrite-galena vein. It has a measured density of 6.07(3) g/cm3 and a calculated density of 6.079(4) g/cm3. The white to colourless crystals have a white streak, adamantine lustre, and fluoresce dull yellow under long wave ultraviolet light. Schultenite is monoclinic. Pa or P2/a; the unit cell parameters refined from the X-ray powder diffraction data are: a 5.827(3), b 6.743(3), c 4.847(3) Å, β 95.34(5)°; V 189.6(1) Å3; Z = 2; a:b:c = 0.8642:1:0.7188. The forms {010}, {001}, and {3̄22} were observed on the Washington schultenite crystals.
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Schlüter, Jochen, Thomas Malcherek, and Boriana Mihailova. "Galloplumbogummite from Tsumeb, Namibia, a new member of the alunite group with tetravalent charge balance." Neues Jahrbuch für Mineralogie - Abhandlungen Journal of Mineralogy and Geochemistry 191, no. 3 (2014): 301–9. http://dx.doi.org/10.1127/0077-7757/2014/0262.

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