Clinobisvanite, monoclinic BiVO4, a new mineral from Yinnietharra, Western Australia

1974 ◽  
Vol 39 (308) ◽  
pp. 847-849 ◽  
Author(s):  
P. J. Bridge ◽  
M. W. Pryce
Keyword(s):  
High Temperature ◽  
Western Australia ◽  
Yellow Powder ◽  
Type Locality ◽  
New Mineral ◽  
Cell Content ◽  
Space Group ◽  
The Government ◽  
Multiple Twinning ◽  
Monoclinic Bivo4

SummaryMonoclinic BiVO4, well known as a high-temperature compound, has been found as a mineral at Yinnietharra and subsequently in specimens from five further W.A. localities, Londonderry, Wodgina, Menzies, Westonia, and Corinthia. At the type locality, the mineral occurs on garnet in a beryl-bearing spessartine pegmatite associated with bismutite, bismutoferrite, and other pegmatite minerals.Clinobisvanite occurs as yellow powder and orange aggregates and plates to 0·1 mm, is commonly intergrown with bismutite, and frequently associated with its polymorph pucherite. It has a yellow streak, earthy to subvitreous lustre, is very soft with perfect {010} cleavage, D calc. 6·95, transparent in very thin cleavage flakes, and shows multiple twinning with cross hatching, strong dispersion and n calc. 2·63.Space group I 2/a, a, 5·186, b 11·708, c 5·100 Å, β 90° 26′ refined from powder data. An electronprobe analysis gave Bi2O3 69·88, V2O5 27·63, PbO 1·34 sum 98·85. Cell content 4[BiVO4] with minor substitution of Pb for Bi. All measurable data agree with earlier work including a prior description of the mineral from Mozambique.Type material is preserved in the government collections at the Government Chemical Laboratories, W.A.

Holtite: a new mineral allied to dumortierite

1971 ◽  
Vol 38 (293) ◽  
pp. 21-25 ◽  
Author(s):  
M. W. Pryce
Keyword(s):  
Optical Properties ◽  
Chemical Analysis ◽  
Western Australia ◽  
Prime Minister ◽  
Unit Cell ◽  
New Mineral ◽  
Space Group ◽  
Free Basis ◽  
X Ray ◽  
The Government

SummaryHoltite, a new mineral allied to dumortierite, occurred as pebbles with stibiotantalite and tantalite on an alluvial tin lease near Greenbushes, Western Australia, and is named after the late H. E. Holt, Prime Minister of Australia.The mineral is orthorhombic with a 11·905 Å, b 20·355 Å, c 4·690 Å, space group Pmcn, weak supercell 2a, 2b, c developed. Crystals are elongated along c, D 3·90 ± 0·02, hardness 8½, fluorescent. Optical properties α 1·743−1·746, mainly yellow, ‖ [001], β 1·756−1·759, colourless, γ 1·758−1·761, colourless, 2Vα 49−55°, r < v. X-ray powder data are given.Chemical analysis gave SiO2 20·30, Sb2O5 4·61, Al2O3 46·43, Ta2O5 11·24, Nb2O5 0·76, Fe2O3 0·27, MnO 0·05, TiO2 0·09, BeO 0·05, B2O3 1·82, Sb2O3 13·89, H2O+ 0·38, H2O− 0·08, sum 99·97%. On a water-free basis the unit cell contains Al24·5Sb2·56‴Ta1·36Sb0·76vNb0·16Fe0·10‴Be0·05Ti0·03Mn0·02B1·40‴Si9·09O66·85. Compared with dumortierite, 4[(A1,Fe)7BSi3O18] or 4 (X11O18), the holtite unit cell contains approximately 4(X10O17).Type material is preserved at the Government Chemical Laboratories, Perth, Western Australia.

Urea, a new mineral, and neotype phosphammite from Western Australia

1973 ◽  
Vol 39 (303) ◽  
pp. 346-348 ◽  
Author(s):  
P. J. Bridge
Keyword(s):  
Optical Properties ◽  
Chemical Analysis ◽  
Western Australia ◽  
Type Material ◽  
New Mineral ◽  
Space Group ◽  
X Ray ◽  
Group A ◽  
The Government

SummaryUrea, a new mineral identical with the artificial compound, occurs as crystals associated with phosphammite, ammonian aphthitalite, and weddellite in guano from Toppin Hill, 123° 56′ E., 28° 42′ S., Western Australia. The urea occurs as elongated tetragonal pyramids, space group , a 5·646, c 4·701 Å, X-ray powder data are given. Optical properties: ω 1·484, ε 1·603. Chemical analysis gave urea, CO(NH2)2 96·0, H2O− 0·46, Na 0.13, K 0·35, Ca 0·07, Mg 0·03, S 0·11, P 0·24, NH3 < 1·0 %, remainder probably mainly H2O+; urea 96 %, impurities 4 %. Type material is preserved in the collection of the Government Chemical Laboratories, Perth, Western Australia.

Archerite, (K,NH4)H2PO4, a new mineral from Madura, Western Australia

1977 ◽  
Vol 41 (317) ◽  
pp. 33-35 ◽  
Author(s):  
P. J. Bridge
Keyword(s):  
Western Australia ◽  
Second Order ◽  
Type Material ◽  
New Mineral ◽  
Queensland Museum ◽  
Cell Dimensions ◽  
The Government ◽  
O 10 ◽  
White Streak

SummaryArcherite, (K, NH4)H2PO4, a new mineral, has been found in Petrogale Cave, 36 km east of Madura Motel (31° 54′S, 127°00′E) Western Australia. Archerite and biphosphammite together with aphthitalite, halite, syngenite, stercorite, oxammite, weddellite, whitlockite, guanine, newberyite, calcite, (NH4)2Ca(HPO4)2·H2O, and an unknown occur as stalactites and wall and floor crusts.Archerite is tetragonal with second order prisms and pyramids in crystals up to 2 mm in length with D 2·23, ω 1·513, ε 1·470, all close to artificial KH2PO4. The mineral is soft, has a white streak, and is soluble in cold H2O. Cell dimensions of natural archerite were not determined and the composition was calculated from measurements of selected powder lines correlated with charts prepared from end-member data and by chemistry which gave 81% KH2PO4 and K2O 10·8, NH2 3·46 respectively, the latter corresponding to (K0·74(NH4)0·26)H2PO4.The name is for Dr. M. Archer, Curator of Mammals, Queensland Museum. Type material is stored in the collections of the Government Chemical Laboratories, Perth, Western Australia.

Tomichite, a new oxide mineral from Western Australia

1979 ◽  
Vol 43 (328) ◽  
pp. 469-471 ◽  
Author(s):  
E. H. Nickel ◽  
I. E. Grey
Keyword(s):  
Western Australia ◽  
Mineral Species ◽  
New Mineral ◽  
Space Group ◽  
Oxide Mineral ◽  
New Mineral Species ◽  
Black Streak

SummaryTomichite, (V,Fe)4Ti3AsO13(OH), a new mineral species related to derbylite, has been found in the ‘green leader’ gold lodes at Kalgoorlie, Western Australia. It is monoclinic, with space group P21/m or P21; a = 7.119 (3), b = 14.176 (5), c = 4.992 (2) Å, β = 105.05 (I)°, Z = 2. Strongest diffraction lines: 3.092 (4), 2.836 (9), 2.663 (10), 1.572 (5). Tomichite occurs as tiny euhedral crystals in quartz; associated minerals are vanadian muscovite, rutile, pyrite, and calaverite. Tomichite is black, has a black streak, lacks internal reflections, is moderately anisotropic, and has S.G. = 4.16 (meas.), 4.42 (calc.). Reflectivity values are 470 nm-15.9%, 546 nm-16.3%, 589 nm 16.6%. Microhardness is VHN 800, using 50 g load.

Biphosphammite: a second occurrence

1972 ◽  
Vol 38 (300) ◽  
pp. 965-967 ◽  
Author(s):  
M. W. Pryce
Keyword(s):  
Western Australia ◽  
Mineral Content ◽  
Soft Water ◽  
Water Soluble ◽  
Space Group ◽  
X Ray ◽  
Partial Analysis ◽  
The Government ◽  
Bat Guano

SummaryBiphosphammite, NH4H2PO4, recorded once as secondary powder in 1870, occurs with bat guano in Murra-el-elevyn cave, 31° 20′ S., 126° 0′ E., Western Australia.The mineral occurs as tapering tetragonal prisms with pyramidal terminations, which are colourless to light buff, very soft, water soluble, contain fine syngenite inclusions, and have D 2·04, ω 1·525, ε 1·480 Space group. , a 7·4935 Å, c 7·340 Å, six strongest powder X-ray lines 3·75 Å (10) 200; 5·24 Å (9) 101; 3·02 Å (9) 112; 1·993 Å (8) 312,213; 2·65 Å (7) 220; 2·368 Å (7) 310,301. Partial analysis of purest available material gave: P2O5 51·1, K2O 14·2, (NH4)2O 12·3, SO2 5·59, Na2O 0·16, water-insolubles 0·81 per cent, remainder mainly CaO and H2O. Calculated mineral content is 88 % biphosphammite (62 % NH4H2PO4, 38% isomorphous KH2PO4), 11·5% syngenite, insolubles 0·81 % calc. total 100·3 per cent.Material proposed to be neotype is preserved at the Government Chemical Laboratories, Perth, Western Australia.

Heyite, Pb5Fe2(VO4)2O4 , a New Mineral from Nevada

1973 ◽  
Vol 39 (301) ◽  
pp. 65-68 ◽  
Author(s):  
Sidney A. Williams
Keyword(s):  
Natural History ◽  
Atomic Absorption ◽  
Electron Probe ◽  
British Museum ◽  
Oxidation Zone ◽  
Type Locality ◽  
New Mineral ◽  
Chemical Difference ◽  
Space Group ◽  
Yellow Orange

SummaryHeyite occurs in silicified limestone with other oxidation-zone minerals derived from galena, chalcopyrite, and pyrite. The occurrence is near Ely, Nevada. Most common are pyromorphite, cerussite, and chrysocolla. Heyite occurs on and replaces corroded tungstenian wulfenite. Crystals are small (up to 0·4 mm), simple in habit, and monoclinic. Only {001}, {100}, {110}, and {01} have been observed. Twinning on {110} is relatively common. The colour is yellow-orange with a yellow streak, H = 4. Electron probe analyses (average of three) gave PbO 75·4 %, ZnO 0·81 %, FeO 8·41 %, V2O5 12·65 %. This leads to Pb5(Fe,Zn)2(VO4)2O4, with Z = 1.The space group is P21/m. Cell constants, refined from powder data, are a 8·910 Å, b 6·017, c 7·734 (all ±0·004 Å); β III° 53′±4′. The strongest powder lines (Cr-Kα) are: 3·248, 11, (100); 2·970, 30, 21 (69); 2·767, 211 (61); 4·873,110, (46); 3·674, 111, (35); 2·306 (33); 3·010, 020, (29); 3·412, 20, 11, (25); 8·281, 100, (25); and 2·113 (20). Gcalc 6·284, Gmeas 6·3±0·2 Optically biaxial with 2Vγ 82°calc, 89°meas; αD 2·185, βD 2·219, γD 2·266; all values ±0·01 and determined in S-Se melts. Dispersion is weak with π > ν. The orientation is β = b, α: [001] 36° (in obtuse β). Nonpleochroic.Three small specimens were found, and represent a total of less than 100 mg of the mineral. One has been deposited with the British Museum (Natural History). The name is for Dr. Max Hey, eminent British chemist and mineralogist.The cell is strikingly similar to that of brackebuschite but electron probe examination of a newly analysed (by atomic absorption) specimen of the latter from the type locality in Argentina shows a marked chemical difference. Heyite strongly resembles descloizite in appearance.

Glaukosphaerite: A new nickel analogue of rosasite

1974 ◽  
Vol 39 (307) ◽  
pp. 737-743 ◽  
Author(s):  
M. W. Pryce ◽  
J. Just
Keyword(s):  
Western Australia ◽  
Unit Cell ◽  
Type Material ◽  
Nickel Sulphide ◽  
Cell Content ◽  
Sulphide Mineralization ◽  
X Ray ◽  
Copper Nickel ◽  
The Government ◽  
Basic Rocks

SummaryGlaukosphaerite, a new secondary basic copper-nickel carbonate was first determined and described from Widgiemooltha (31° 30′ S., 121° 34′ E.), Western Australia, by R. C. Morris at the W.A. Government Chemical Laboratories in 1967. The mineral has since been found at the nickel mines at Kambalda, Windarra, Scotia, Carr Boyd Rocks, and St. Ives, Western Australia, and is apparently an indicator of copper-nickel sulphide mineralization. The name is derived from the colour and spherulitic formation. Associated minerals are goethite, secondary quartz, paratacamite, gypsum, nickeloan varieties of magnesite and malachite, and clays. Glaukosphaerite also fills joints in fresh basic rocks.The type material is from Hampton East Location 48, 3 km N. of the Durkin Shaft, Kambalda. Glaukosphaerite is monoclinic, a 9·34 Å, b 11·93 Å, c 3·07 Å, β 90–1°, space group indeterminate, c axis disordered, six strongest X-ray powder lines are 2·587 (10b) 201, 3·68(7b) 220, 2·516(4) 240, 211, 5·04(3) 120, 2·124(3b), 1·473(3). The mineral occurs in green spherules of fibres cleaved and elongated along c, D = 3·78 to 3·96 increasing with Cu, is brittle, H. 3 to 4, and has dull to subvitreous to silky lustre.α 1·69–1·71 green, β ≈ γ 1·83–1·85 yellow-green, α:[001] 7°.Chemical analysis on the type material, D 3·78, containing 0·5 % goethite impurity and minimal inseparable malachite, gave CuO 41·57, NiO 25·22, CoO 0·07, ZnO 0·02, Fe2O3 0·47, MgO 1·23, SiO2 < 0·01, CO2 21·70, H2O+ 9·85, H2O− < 0·01, sum 100·13%. After deduction of goethite the unit cell contains 4[(Cu,Ni,Mg,Co)1.74C0·96H2·12O4·73]. This unit-cell content is deficient in metal ions and oxygen and contains excess H, when compared to 4[(Cu,Ni)2(OH)2CO3]. Two analyses of malachite-bearing glaukosphaerite from Widgiemooltha and Carr Boyd Rocks show the same deficiencies and excess not previously recorded in malachite, rosasite, or aurichalcite analyses. Glaukosphaerite, 4[(Cu,Ni)2(OH)2CO3] is the nickel analogue of rosasite 4[(Cu,Zn)2(OH)2CO3].From results based on X-ray rotation patterns of oriented rosasite fibres from Sardinia and Durango with supplementary electron-microprobe studies and Guinier powder-film data, the authors consider glaukosphaerite and rosasite to be separate mineral species from the related malachite, 4[Cu2(OH)2CO3].Type material is preserved in the government collection at the Government Chemical Laboratories, Perth, Western Australia.

Minyulite (hydrous K-Al fluophosphate) from South Australia

1943 ◽  
Vol 26 (181) ◽  
pp. 309-314 ◽  
Author(s):  
L. J. Spencer ◽  
F. A. Bannister ◽  
M. H. Hey ◽  
Hilda Bennett
Keyword(s):  
Western Australia ◽  
South Australia ◽  
British Museum ◽  
Large Block ◽  
New Mineral ◽  
Rock Phosphates ◽  
X Ray ◽  
The Government

In 1908, at the close of the Franco-British Exhibition at Shepherd's Bush, London, a series of rock phosphates from various localities in South Australia was transferred to the Mineral Department of the British Museum as a present from the Government of South Australia. One large block from Wait's quarry at Noarlunga, 20 miles south of Adelaide, showed cavities lined with crusts of minute crystals. These crystals were determined goniometrically and optically in 1908 to be orthorhombic, and qualitative chemical tests showed the presence of Al, Mg, P, F, and H2O (K was missed). This evidently represented a new mineral, and it is only now that the work has been successfully completed by the three junior authors. In the meantime, however, the same mineral was discovered in Western Australia by the late Dr. E. S. Simpson in 1932, and named minyulite, from Minyulo Well. This he determined optically to be orthorhombie, and the formula was given as KAl2(OH,F)(PO4)2.3½H2O or 2K(OH, F).4A1PO4.7H2O. Crystallographic and X-ray data are now given for this species.

scholarly journals Multianvil High-Pressure/High-Temperature Synthesis and Characterization of multiferroic HP-Co3TeO6

2021 ◽  
Author(s):  
Gunter Heymann ◽  
Elisabeth Selb ◽  
Toni Buttlar ◽  
Oliver Janka ◽  
Martina Tribus ◽  
...  
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Type Structure ◽  
Synthesis And Characterization ◽  
Temperature Synthesis ◽  
Space Group ◽  
Crystal System ◽  
High Temperature Synthesis ◽  
High Pressure High Temperature

By high-pressure/high-temperature multianvil synthesis a new high-pressure (HP) phase of Co3TeO6 was obtained. The compound crystallizes in the acentric trigonal crystal system of the Ni3TeO6-type structure with space group R3...

Cation ordering in the double tungstate LiFe(WO4)2

2012 ◽  
Vol 68 (2) ◽  
pp. i7-i8 ◽  
Author(s):  
Marjorie Albino ◽  
Stanislav Pechev ◽  
Philippe Veber ◽  
Matias Velazquez ◽  
Michael Josse
Keyword(s):  
High Temperature ◽  
Cation Ordering ◽  
Monoclinic Space Group ◽  
High Temperature Solution ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
Double Tungstate ◽  
Growth Method ◽  
Temperature Solution ◽  
Expected Values

Single crystals of lithium iron tungstate, LiFe(WO4)2, were obtained using a high-temperature solution growth method. The analysis was conducted using the monoclinic space groupC2/c, with β = 90.597 (2)°, givingR1 = 0.0177. The Li and Fe atoms lie on twofold axes. The structure can also be refined using the orthorhombic space groupCmcm, giving slightly higher residuals. The experimental value of β and the residuals mitigate in favour of the monoclinic description of the structure. Calculated bond-valence sums for the present results are closer to expected values than those obtained using the results of a previously reported analysis of this structure.

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