Birchite, a new mineral from Broken Hill, New South Wales, Australia: Description and structure refinement

2008 ◽  
Vol 93 (5-6) ◽  
pp. 910-917 ◽  
Author(s):  
P. Elliott ◽  
J. Brugger ◽  
A. Pring ◽  
M. L. Cole ◽  
A. C. Willis ◽  
...  
Keyword(s):  
New South ◽  
Structure Refinement ◽  
New South Wales ◽  
New Mineral ◽  
Broken Hill ◽  
South Wales

Description and crystal structure of a new mineral, edwardsite, Cu3Cd2(SO4)2(OH)6·4H2O, from Broken Hill, New South Wales, Australia

2010 ◽  
Vol 74 (1) ◽  
pp. 39-53 ◽  
Author(s):  
P. Elliott ◽  
J. Brugger ◽  
T. Caradoc-Davies
Keyword(s):  
Crystal Structure ◽  
Empirical Formula ◽  
New South ◽  
New South Wales ◽  
Crystal Structure Analysis ◽  
New Mineral ◽  
Monoclinic Space Group ◽  
Calculated Density ◽  
Broken Hill ◽  
South Wales

AbstractEdwardsite, Cu3Cd2(SO4)2(OH)6·4H2O, is a new mineral from the Block 14 Opencut, Broken Hill, New South Wales, Australia. It occurs as druses of tabular and bladed crystals up to 0.06 mm in size, associated with niedermayrite and christelite. Edwardsite is pale blue, transparent with vitreous lustre and has excellent cleavage parallel to {100}. Density was not measured but the calculated density, from the empirical formula, is 3.53 g cm–3 and the Mohs hardness is ∼3. Optically, it is biaxial negative with α ∼ 1.74, β = 1.762(4), γ ∼ 1.77 and 2Vcalc. ∼ +62°. The optical orientation is X = b, Y ∼ a, Z ∼ c. Electron microprobe analysis gave (wt.%): CdO 32.43, CuO 28.06, ZnO 2.26, FeO 0.08, SO3 20.35, H2Ocalc. (from crystal-structure analysis) 14.14, totalling 99.32. The empirical formula, calculated on the basis of 18 oxygen atoms is Cu2.77Cd1.98Zn0.22Fe0.01(SO4)2.00(OH)5.95·4.06H2O. Edwardsite is monoclinic, space group P21/c, with a = 10.863(2) Å, b = 13.129(3) Å, c = 11.169(2) Å, β = 113.04(3)°, V = 1465.9(5) Å3 (single-crystal data) and Z = 4. The eight strongest lines in the powder diffraction pattern are [d (Å), (I/I0), (hkl)]: 9.991, (90), (100); 5.001, (90), (200, 21); 4.591, (45), (20); 3.332, (60), (300, 032); 3.005, (30), (03); 2.824, (40), (2); 2.769, (55), (20, 042, 10); 2.670, (45), (2). The crystal structure was determined by direct methods and refined to R1 = 3.21% using 1904 observed reflections with Fo > 4σ(Fo) collected using synchrotron X-ray radiation (λ = 0.773418 Å). The structure is based on infinite sheets of edge-sharing Cuϕ6 (ϕ: O2–, OH) octahedra and Cdϕ7 (ϕ: O2–, H2O) polyhedra parallel to (100). The sheets are decorated on both sides by corner-sharing (SO4) tetrahedra, which also corner-link to isolated Cdϕ6 octahedra, thus connecting adjacent sheets. Moderate-strong to weak hydrogen bonding provides additional linkage between sheets.

Ecandrewsite, the zinc analogue of ilmenite, from Little Broken Hill, New South Wales, Australia, and the San Valentin Mine, Sierra de Cartegena, Spain

1988 ◽  
Vol 52 (365) ◽  
pp. 237-240 ◽  
Author(s):  
W. D. Birch ◽  
E. A. J. Burke ◽  
V. J. Wall ◽  
M. A. Etheridge
Keyword(s):  
New South ◽  
New South Wales ◽  
Polarized Light ◽  
Type Locality ◽  
New Mineral ◽  
Broken Hill ◽  
Hill Region ◽  
South Wales ◽  
Partial Description ◽  
Reflectance Data

AbstractEcandrewsite, the zinc analogue of ilmenite, is a new mineral which was first described from the Broken Hill lode in 1970 and discovered subsequently in ores from Little Broken Hill (New South Wales) and the San Valentin Mine, Spain. The name ‘ecandrewsite’ was used in a partial description of the mineral in ‘Minerals of Broken Hill’ (1982), thereby establishing the Little Broken Hill locality, specifically the Melbourne Rockwell Mine, as the type locality. Microprobe analysis of ecandrewsite from the type locality gave ZnO 30.42 (wt.%), FeO (total Fe) 11.37, MnO 7.64, TiO2 50.12, total 99.6%, yielding an empirical formula of (Zn0.59Fe0.24Mn0.17)1.00Ti0.99O3 based on 3 oxygen atoms. All compositions from Little Broken Hill and the San Valentin Mine are ferroan manganoan ecandrewsite. The strongest lines in the X-ray powder diffraction data are (d in Å, (hkil), I/Io):2.746, (104), 100; 2.545, (110), 80; 1.867, (024), 40; 3.734, (012), 30; 1.470, (3030), 30; 1.723, (116), 25. Ecandrewsite is hexagonal, space group RR3¯ assigned from a structural study, with a = 5.090(1), c = 14.036(2)Å, V = 314.6(3)Å3, Z = 6, D(calc.) = 4.99. The mineral is opaque, dark brown to black with a similar streak, and a submetallic lustre. In plane polarized light the reflection colour is greyish white with a pinkish tinge. Reflection pleochroism is weak, but anisotropism is strong with colours from greenish grey to dark brownish grey. Reflectance data in air between 470 and 650 nm are given. At the type locality, ecandrewsite forms disseminated tabular euhedral grains up to 250 × 50 µm, in quartz-rich metasediments. Associated minerals include almandine-spessartine, ferroan gahnite and rutile. The name is for E. C. Andrews, pioneering geologist in the Broken Hill region of New South Wales. Type material consisting of one grain is preserved in the Museum of Victoria (M35700). The mineral and name were approved by the IMA Commission on New Minerals and Mineral Names in 1979.

Marshite, Miersite, and Iodyrite from Broken Hill, New South Wales

1901 ◽  
Vol 13 (59) ◽  
pp. 38-53 ◽  
Author(s):  
L. J. Spencer
Keyword(s):  
Silver Iodide ◽  
New South ◽  
New South Wales ◽  
New Mineral ◽  
Rare Occurrence ◽  
Mercury Iodide ◽  
Broken Hill ◽  
South Wales ◽  
Intimate Mixture ◽  
Hexagonal Crystals

Minerals containing iodine as an essential constituent are of rare occurrence in nature. The most common, and that first described, is silver iodide, which was analysed by Vauquelin in 1825; hexagonal crystals of iodyrite were described by Des Cloizeaux in 1854. Other iodides are marshite and the new mineral miersite ; iodobromite and schwartzembergite also contain considerable amounts of iodine. The existence of mercury iodide seems to be doubtful; the supposed mercury iodide from Broken Hill consists of an intimate mixture of cinnabar and iodyrite. Two iodates are also known, namely lautarite and dietzeite.

Description and crystal structure of nyholmite, a new mineral related to hureaulite, from Broken Hill, New South Wales, Australia

2009 ◽  
Vol 73 (5) ◽  
pp. 723-735 ◽  
Author(s):  
P. Elliott ◽  
P. Turner ◽  
P. Jensen ◽  
U. Kolitsch ◽  
A. Pring
Keyword(s):  
Crystal Structure ◽  
Empirical Formula ◽  
New South ◽  
New South Wales ◽  
New Mineral ◽  
Calculated Density ◽  
Broken Hill ◽  
South Wales ◽  
Mohs Hardness ◽  
Heteropolyhedral Framework

AbstractNyholmite, Cd3Zn2(AsO3OH)2(AsO4)2·4H2O, from the Block 14 Opencut, Broken Hill, New South Wales, Australia, is a new Cd-Zn arsenate species, isostructural with the minerals of the hureaulite group. The mineral occurs in a quartz-garnet-arsenopyrite matrix as white globules, tufted aggregates of fibrous crystals and radiating hemispheres of thin, colourless, bladed crystals. Associated minerals are goldquarryite, lavendulan-sampleite, scorodite-strengite and gypsum. Individual crystals are up to 0.2 mm in length and 0.05 mm across. The mineral is transparent to translucent with a vitreous lustre. It is brittle with an uneven fracture and a white streak. The Mohs hardness is 3–3.5 and the calculated density is 4.23 g cm–3 for the empirical formula. Electron microprobe analyses yielded CdO 34.58, ZnO 9.72, MnO 3.59, CuO 3.39, Al2O3 0.20, CaO 0.16, PbO 0.37, As2O5 34.55, P2O5 6.29 totalling 92.85 wt.%. The empirical formula, based on 20 oxygen atoms, is Ca0.03Pb0.02 Cd2.80Al0.04Zn1.24-Cu0.44Mn0.53[(AsO4)3.13(PO4)0.92]Σ4.05H1.91·3.79H2O. Nyholmite is monoclinic, C2/c, a = 18.062(4) Å, b = 9.341(2) Å, c = 9.844(2) Å, β = 96.17(3)°, V = 1651.2(6) Å3 (single-crystal data, at 123 K). The six strongest lines in the X-ray powder diffraction pattern are [d(Å),I,(hkl)]: 8.985,30,(200); 8.283,85,(110); 6.169,25,(111); 4.878,25,(002); 3.234,100,(2, 420); 3.079,65,(222, 511); 2.976’45’(113). The crystal structure was solved by Patterson methods and refined using 2045 observed reflections to R1(F) = 3.73%. The structure is characterized by a kinked, five-membered chain of edge-sharing Mφ6 (φ = unspecified anion) octahedra, or pentamer, that extends in the a direction. The pentamers link by sharing corners to form a sheet in the (001) plane. Pentamers are also linked, via corner-sharing, by (As,P)O4 groups forming thick slabs in the (001) plane. The slabs link in the c direction by cornersharing between octahedra and tetrahedra to form a dense heteropolyhedral framework. Moderate to weak hydrogen-bonding provides additional linkage between the slabs.

Ferrorhodonite, CaMn3Fe[Si5O15], a new mineral species from Broken Hill, New South Wales, Australia

2016 ◽  
Vol 44 (5) ◽  
pp. 323-334 ◽  
Author(s):  
Nadezhda V. Shchipalkina ◽  
Nikita V. Chukanov ◽  
Igor V. Pekov ◽  
Sergey M. Aksenov ◽  
Catherine McCammon ◽  
...  
Keyword(s):  
New South ◽  
New South Wales ◽  
Mineral Species ◽  
New Mineral ◽  
Broken Hill ◽  
South Wales ◽  
New Mineral Species

scholarly journals Broken Hill, New South Wales

Nature ◽  
1924 ◽  
Vol 113 (2845) ◽  
pp. 697-698
Keyword(s):  
New South ◽  
New South Wales ◽  
Broken Hill ◽  
South Wales
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