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Chromitites, Platinum-Group Elements, and Ore Minerals
Eur. J. Mineral. 2017, 29, 539–541 Published online Chromitites, platinum-group elements, and ore minerals Special issue dedicated to Zdeněk Johan (1935–2016): Preface Fig. 1. Zdeněk Johan in the Mineralogical Collections at Charles University in Prague (Czech Republic). Zdeněk Johan, an outstanding Czech-French mineralogist and a great colleague, passed away in February 2016. He served as Scientific Director of the French Bureau de Recherches Géologiques et Minières (BRGM), became a fellow of professional and learned societies and received numerous honours and distinctions for his scientific achievements in mineralogy, crystal chemistry, petrology and ore geology (see Ettler, 2016). He also served in 1993 as president of the Société française de Minéralogie et de Cristallographie (SFMC), a founding society of the European Journal of Mineralogy (EJM). When asked by the Editorial Board, we thus immediately agreed to organize a special issue of EJM to celebrate Zdeněk Johan’s career. We were surprised by the feedback we received. We hope that the selection of papers, all following in the footsteps of Zdeněk Johan’s research activities, will resonate in the geoscience community. This special issue starts with Zdeněk’s late publication on the role of fluids in chromitite formation in ophiolite complexes (Johan et al., 2017), followed by an intriguing view on the origin of super-reduced mineral assemblages in ophiolite chromitites by Bill Griffin’s group (Xiong et al., 2017) and two articles on platinum-group minerals in ophiolites (Zaccarini et al., 2017; Augé et al., 2017). Platinum-group minerals occurring in different geological settings have always been a central theme in Zdeněk’s research and are represented here by several articles, which include the description of new minerals, new occurrences and analytical/experimental studies (Vymazalová et al., 2017; Laufek et al., 2017; Barkov et al., 2017; Pasava et al., 2017; Cabri et al., 2017; Makovicky & Karup-Møller, 2017). -
Article Is Available On- Cu2 Site Is More Difficult, Certainly Due to the Small Size Line At
Eur. J. Mineral., 32, 449–455, 2020 https://doi.org/10.5194/ejm-32-449-2020 © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License. Luxembourgite, AgCuPbBi4Se8, a new mineral species from Bivels, Grand Duchy of Luxembourg Simon Philippo1, Frédéric Hatert2, Yannick Bruni2, Pietro Vignola3, and Jiríˇ Sejkora4 1Laboratoire de Minéralogie, Musée National d’Histoire Naturelle, Rue Münster 25, 2160 Luxembourg, Luxembourg 2Laboratoire de Minéralogie, Université de Liège B18, 4000 Liège, Belgium 3CNR-Istituto di Geologia Ambientale e Geoingegneria, via Mario Bianco 9, 20131 Milan, Italy 4Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, 193 00 9, Prague, Czech Republic Correspondence: Frédéric Hatert ([email protected]) Received: 24 March 2020 – Revised: 30 June 2020 – Accepted: 15 July 2020 – Published: 12 August 2020 Abstract. Luxembourgite, ideally AgCuPbBi4Se8, is a new selenide discovered at Bivels, Grand Duchy of Lux- embourg. The mineral forms tiny fibres reaching 200 µm in length and 5 µm in diameter, which are deposited on dolomite crystals. Luxembourgite is grey, with a metallic lustre and without cleavage planes; its Mohs hard- ness is 3 and its calculated density is 8.00 g cm−3. Electron-microprobe analyses indicate an empirical formula Ag1:00.Cu0:82Ag0:20Fe0:01/61:03Pb1:13Bi4:11.Se7:72S0:01/67:73, calculated on the basis of 15 atoms per formula unit. A single-crystal structure refinement was performed to R1 D 0:0476, in the P 21=m space group, with 3 a D 13:002.1/, b D 4:1543.3/, c D 15:312.2/Å, β D 108:92.1/◦, V D 782:4.2/Å , Z D 2. -
21Àxs34, a New Thallium Sulphosalt from Lengenbach Quarry, Binntal, Switzerland
Mineralogical Magazine, December 2009, Vol.73(6), pp.1027–1032 Dalnegroite, Tl5ÀxPb2x(As,Sb)21ÀxS34, a new thallium sulphosalt from Lengenbach quarry, Binntal, Switzerland 1, 1 2 1 F. NESTOLA *, A. GUASTONI ,L.BINDI AND L. SECCO 1 Dipartimento di Geoscienze, Universita` degli Studi di Padova, Via Giotto 1, I-35137 Padova, Italy 2 Museo di Storia Naturale, sezione di Mineralogia, Universita` degli Studi di Firenze, Via La Pira, 4, I-50121 Firenze, Italy [Received 16 October 2009; Accepted 14 December 2009] ABSTRACT Dalnegroite, ideally Tl4Pb2(As12Sb8)S20S34, is a new mineral from Lengenbach, Binntal, Switzerland. It occurs as anhedral to subhedral grains up to 200 mm across, closely associated with realgar, pyrite, Sb- rich seligmanite in a gangue of dolomite. Dalnegroite is opaque with a submetallic lustre and shows a À2 brownish-red streak. It is brittle; the Vickers hardness (VHN25)is87kgmm (range: 69À101) (Mohs hardness ~3À3Ý). In reflected light, dalnegroite is highly bireflectant and weakly pleochroic, from white to a slightly greenish-grey. In cross-polarized light, it is highly anisotropic with bluish to green rotation tints and red internal reflections. According to chemical and X-ray diffraction data, dalnegroite appears to be isotypic with ˚ chabourne´ite, Tl5ÀxPb2x(Sb,As)21ÀxS34. It is triclinic, probable space group P1, with a = 16.217(7) A, b = 42.544(9) A˚ , c = 8.557(4) A˚ , a = 95.72(4)º, b = 90.25(4)º, g = 96.78(4)º, V = 5832(4) A˚ 3, Z =4. ˚ The nine strongest powder-diffraction lines [d (A)(I/I0)(hkl)] are: 3.927 (100) (2¯ 10 0); 3.775 (45) (22¯2); 3.685 (45) (4¯60); 3.620 (50) (440); 3.124 (50) (2¯8¯2); 2.929 (60) (42¯2); 2.850 (70) (4¯42); 2.579 (45) (0 14 2); 2.097 (60) (024). -
Mineral Processing
Mineral Processing Foundations of theory and practice of minerallurgy 1st English edition JAN DRZYMALA, C. Eng., Ph.D., D.Sc. Member of the Polish Mineral Processing Society Wroclaw University of Technology 2007 Translation: J. Drzymala, A. Swatek Reviewer: A. Luszczkiewicz Published as supplied by the author ©Copyright by Jan Drzymala, Wroclaw 2007 Computer typesetting: Danuta Szyszka Cover design: Danuta Szyszka Cover photo: Sebastian Bożek Oficyna Wydawnicza Politechniki Wrocławskiej Wybrzeze Wyspianskiego 27 50-370 Wroclaw Any part of this publication can be used in any form by any means provided that the usage is acknowledged by the citation: Drzymala, J., Mineral Processing, Foundations of theory and practice of minerallurgy, Oficyna Wydawnicza PWr., 2007, www.ig.pwr.wroc.pl/minproc ISBN 978-83-7493-362-9 Contents Introduction ....................................................................................................................9 Part I Introduction to mineral processing .....................................................................13 1. From the Big Bang to mineral processing................................................................14 1.1. The formation of matter ...................................................................................14 1.2. Elementary particles.........................................................................................16 1.3. Molecules .........................................................................................................18 1.4. Solids................................................................................................................19 -
Ralphcannonite, Agzn2tlas2s6, a New Mineral of the Routhierite
1 1 Ralphcannonite, AgZn2TlAs2S6, a new mineral of the 2 routhierite isotypic series from Lengenbach, Binn 3 Valley, Switzerland 4 1* 2 3 5 LUCA BINDI , CRISTIAN BIAGIONI , THOMAS RABER , PHILIPPE 4 5 6 ROTH , FABRIZIO NESTOLA 7 8 9 10 1 Dipartimento di Scienze della Terra, Università degli Studi di Firenze, Via G. La Pira, 4, I- 11 50121 Firenze, Italy 12 2 Dipartimento di Scienze della Terra, Università di Pisa, Via Santa Maria, 53, I-56126 Pisa, 13 Italy 14 3 FGL (Forschungsgemeinschaft Lengenbach), Edith-Stein-Str. 9, D-79110 Freiburg, 15 Germany 16 4 FGL (Forschungsgemeinschaft Lengenbach), Ilanzhofweg 2, CH-8057 Zurich, Switzerland 17 5 Dipartimento di Geoscienze, Università di Padova, Via Gradenigo, 6, I-35131 Padova, Italy 18 19 20 21 22 *e-mail address: [email protected] 23 2 24 ABSTRACT 25 The new mineral species ralphcannonite, AgZn2TlAs2S6, was discovered in the Lengenbach 26 quarry, Binn Valley, Wallis, Switzerland. It occurs as metallic black equant, isometric to 27 prismatic crystals, up to 50 μm, associated with dufrénoysite, hatchite, realgar, and baryte. 28 Minimum and maximum reflectance data for COM wavelengths in air are [λ (nm): R (%)]: 29 471.1: 25.8/27.1; 548.3: 25.2/26.6; 586.6: 24.6/25.8; 652.3: 23.9/24.8. Electron microprobe 30 analyses give (wt%): Cu 2.01(6), Ag 8.50(16), Zn 10.94(20), Fe 3.25(8), Hg 7.92(12), Tl 31 24.58(26), As 18.36(19), Sb 0.17(4), S 24.03(21), total 99.76(71). -
Download the Scanned
THE AMERICAN MINERALOGIS'I, VOL. 52, MAY-JUNE, 1967 NEW MINERAL NAMI'S Mrcu.q.Br,FrBrscnnn Niningerite Kleus Knrr- aNo K. G. SNrrsrxcnn (1967) Niningerite, a nern'meteoritic sulfide. Seience 155, 451-543. Averages of electron probe analyses of the mineral from 6 enstatite chondrites (1-Abee, 2-Saint Sauveur, 3-Adhi-Kot, 4-Indarch, 5-St. Mark's and 5-Kota-Kota) give: S 41.0 42.7 42.6 43.4 47.4 46.9 Mg 10.1 13.2 II.J 18.3 22.7 23.5 Mn 4.02 3.93 11 6.5 11.8 11.6 l'e 37.r 35.2 34.2 270 16.6 15.6 Ca 3.03 2.55 1.96 r.28 0.53 0.39 Zn 0.31 n.d. n.d. n.d. n.d. n d. Cr 1.84 t.97 IOD 0.40 0.14 Total 97.40 99.3s 99.t3 98.1'+ 99.43 98.13 No. of grains analyzed 20 IJ t4 10 10 a 5.17 516 n d. 5.r8 5.17 n.d G. calc. 3 .68 J.5v 3.644 3.35 s.Ll J,Zr * Calc G. assuminga:5.17A. These correspond to RS, with R: S ranging from 0 97 to 1.05, or (Mg, Fe, Mn)S. Mg is dominant in nos. 4, 5, 6, but Fe)Mg in nos 1, 2, and 3;no. I has Fe:Mg:Mn:0.52: 0.33:0.06. The X-ray pattern is very similar to that of aiabandite and ferroan alabandite (cubic), but with o slightly lower. -
By Michael Fleischer and Constance M. Schafer Open-File Report 81
U.S. DEPARTMENT OF THE INTERIOR GEOLOGICAL SURVEY THE FORD-FLEISCHER FILE OF MINERALOGICAL REFERENCES, 1978-1980 INCLUSIVE by Michael Fleischer and Constance M. Schafer Open-File Report 81-1174 This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards 1981 The Ford-Fleischer File of Mineralogical References 1978-1980 Inclusive by Michael Fleischer and Constance M. Schafer In 1916, Prof. W.E. Ford of Yale University, having just published the third Appendix to Dana's System of Mineralogy, 6th Edition, began to plan for the 7th Edition. He decided to create a file, with a separate folder for each mineral (or for each mineral group) into which he would place a citation to any paper that seemed to contain data that should be considered in the revision of the 6th Edition. He maintained the file in duplicate, with one copy going to Harvard University, when it was agreed in the early 1930's that Palache, Berman, and Fronde! there would have the main burden of the revision. A number of assistants were hired for the project, including C.W. Wolfe and M.A. Peacock to gather crystallographic data at Harvard, and Michael Fleischer to collect and evaluate chemical data at Yale. After Prof. Ford's death in March 1939, the second set of his files came to the U.S. Geological Survey and the literature has been covered since then by Michael Fleischer. Copies are now at the U.S. Geological Survey at Reston, Va., Denver, Colo., and Menlo Park, Cal., and at the U.S. -
Alphabetical List
LIST L - MINERALS - ALPHABETICAL LIST Specific mineral Group name Specific mineral Group name acanthite sulfides asbolite oxides accessory minerals astrophyllite chain silicates actinolite clinoamphibole atacamite chlorides adamite arsenates augite clinopyroxene adularia alkali feldspar austinite arsenates aegirine clinopyroxene autunite phosphates aegirine-augite clinopyroxene awaruite alloys aenigmatite aenigmatite group axinite group sorosilicates aeschynite niobates azurite carbonates agate silica minerals babingtonite rhodonite group aikinite sulfides baddeleyite oxides akaganeite oxides barbosalite phosphates akermanite melilite group barite sulfates alabandite sulfides barium feldspar feldspar group alabaster barium silicates silicates albite plagioclase barylite sorosilicates alexandrite oxides bassanite sulfates allanite epidote group bastnaesite carbonates and fluorides alloclasite sulfides bavenite chain silicates allophane clay minerals bayerite oxides almandine garnet group beidellite clay minerals alpha quartz silica minerals beraunite phosphates alstonite carbonates berndtite sulfides altaite tellurides berryite sulfosalts alum sulfates berthierine serpentine group aluminum hydroxides oxides bertrandite sorosilicates aluminum oxides oxides beryl ring silicates alumohydrocalcite carbonates betafite niobates and tantalates alunite sulfates betekhtinite sulfides amazonite alkali feldspar beudantite arsenates and sulfates amber organic minerals bideauxite chlorides and fluorides amblygonite phosphates biotite mica group amethyst -
Crystallography of Sartorite from Binn. ( with Plate V.) by Cnaal~8 0
212 Crystallography of Sartorite from Binn. ( With Plate V.) By CnAaL~8 0. T~CHX~AN~, Ph.D., F.G.8. [Read June 12, 1906.] LITERATURE J. ~. yore Rath, ' Mineraloglsche Mittheilungen (Fortsetzuug III): If. Skleroklas.' Ann. Chem. Phys. (Poggendorff), 1864, vol. cxxii, pp. 880-387. H. Baumhauer, ' Ueber den Skleroklas yon Binn.' Sitzungsber. k. preuss. Akad. Wiss. Berlin, 1895, pp. 243-252. R. H. Solly, ' Sulpharsenites of lead fl'om the Binnenthal.' Min. Mag., 1900, vol. xii, pp. 282-297 (Sartorite on pp. 286 and 297). Translation in Zeits. Kryst. Min., 1891, vol. xxxv, pp. 321-344~. W. J. Lewis, ' A large crystal of sulpharsenite of lead from the Binnenthal.' Min. Mag., 1908, vol. xiii, p. xxxiv. (Analysis by H. Jackson.) R. H. Solly, 'On sartorite . and other minerals from the Binnenthal." Min. Mag., 1904, vol. xiv, p. xx. (Title only; abstract, giving angular elements, in ' Nature,' 1903, vol. lxlx, p. 142.) lI. Baumhauer, ' Die Minerallen des Binnenthals.' Bull. Murlthienne, Soc. valais. sci. nat., 1905, p. 85-49. HE mineral sartorite (of Dana) or scleroclase (of v. Waltershausen) T appears to have been found much more frequently in latter years in the well-known dolomite at the Lengenbach, in the Binnenthal, Switzerland, than was formerly the case, and it may now be considered to be one of the commonest of the group of sulpharsenites of lead which have made this locality famous. I~rge, detached, longitudinally striated, prismatic crystals, mostly devoid of terminal faces, have been especially frequent, the majority of which are doubtless sartorites. Notwithstanding this abundance of material, there still exists some {Toubt respecting the system in which this mineral crystallizes. -
A Specific Gravity Index for Minerats
A SPECIFICGRAVITY INDEX FOR MINERATS c. A. MURSKyI ern R. M. THOMPSON, Un'fuersityof Bri.ti,sh Col,umb,in,Voncouver, Canad,a This work was undertaken in order to provide a practical, and as far as possible,a complete list of specific gravities of minerals. An accurate speciflc cravity determination can usually be made quickly and this information when combined with other physical properties commonly leads to rapid mineral identification. Early complete but now outdated specific gravity lists are those of Miers given in his mineralogy textbook (1902),and Spencer(M,i,n. Mag.,2!, pp. 382-865,I}ZZ). A more recent list by Hurlbut (Dana's Manuatr of M,i,neral,ogy,LgE2) is incomplete and others are limited to rock forming minerals,Trdger (Tabel,l,enntr-optischen Best'i,mmungd,er geste,i,nsb.ildend,en M,ineral,e, 1952) and Morey (Encycto- ped,iaof Cherni,cal,Technol,ogy, Vol. 12, 19b4). In his mineral identification tables, smith (rd,entifi,cati,onand. qual,itatioe cherai,cal,anal,ys'i,s of mineral,s,second edition, New york, 19bB) groups minerals on the basis of specificgravity but in each of the twelve groups the minerals are listed in order of decreasinghardness. The present work should not be regarded as an index of all known minerals as the specificgravities of many minerals are unknown or known only approximately and are omitted from the current list. The list, in order of increasing specific gravity, includes all minerals without regard to other physical properties or to chemical composition. The designation I or II after the name indicates that the mineral falls in the classesof minerals describedin Dana Systemof M'ineralogyEdition 7, volume I (Native elements, sulphides, oxides, etc.) or II (Halides, carbonates, etc.) (L944 and 1951). -
Hendekasartorite Tl2pb48as82s172
Hendekasartorite Tl2Pb48As82S172 Crystal Data: Monoclinic. Point Group: 2/m. As imperfectly formed crystals. Physical Properties: Cleavage: Good on {100}. Tenacity: Brittle. Fracture: Conchoidal. Hardness = 3-3.5 VHN = 208-221 214 average (25 g load). D(meas.) = n.d. D(calc.) = 5.18 Optical Properties: Opaque. Color: Lead-gray; gray-white in reflected light, deep red internal reflections rare. Streak: Dark brown. Luster: Metallic. Anisotropism: Moderate to weak in brown-violet and deep green tints. Bireflectance: Weak. Pleochroism: Weak. Optical Class: n.d. R1-R2: (400) 39.5-42.5, (420) 38.7-41.8, (440) 38.0-41.3, (460) 37.5-40.8, (470) 37.2-40.6, (480) 37.1-40.4, (500) 36.7-40.0, (520) 36.2-39.5, (540) 35.6-38.9, (546) 35.3-38.5, (560) 35.0-38.1, (580) 34.3-37.2, (589) 33.9-36.8, (600) 33.4-36.3, (620) 32.6-35.3, (640) 31.8-34.4, (650) 31.5-34.0, (660) 31.1-33.6, (680) 30.5-32.9, (700) 30.1-32.4 Cell Data: Space Group: P21/c. a = 31.806(5) b = 7.889(12) c = 28.556(4) β = 99.034(2)° Z = 1 X-ray Powder Pattern: Calculated pattern. 3.50 (100), 2.941 (76), 2.753 (73), 2.751 (73), 3.87 (69), 2.947 (66), 9.76 (56) Chemistry: (1) (2) Tl 2.80 1.86 Pb 44.63 45.18 Sb 0.90 As 27.10 27.91 S 24.83 25.05 Total 100.26 100.00 (1) Lengenbach quarry, Binntal, Wallis, Switzerland; average of 22 electron microprobe analyses; corresponds to Tl3.03Pb47.71(As80.10Sb1.65)Σ=81.74S171.52. -
Berryite Pb3(Cu, Ag)5Bi7s16 C 2001-2005 Mineral Data Publishing, Version 1 Crystal Data: Monoclinic, Pseudo-Orthorhombic
Berryite Pb3(Cu, Ag)5Bi7S16 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Monoclinic, pseudo-orthorhombic. Point Group: 2/m or 2. Lathlike aggregates of several not quite parallel individuals, to a maximum length of 1 mm; granular, massive. Twinning: Repeated. Physical Properties: Cleavage: Poor. Hardness = n.d. VHN = 131–152 (100 g load), 171 (100 g load). D(meas.) = 6.7, corrected for admixed quartz. D(calc.) = [6.83] Optical Properties: Opaque. Color: White to pale gray in polished section. Pleochroism: Weak to distinct. Anisotropism: Distinct to strong, from pale gray to red-brown and green. R1–R2: n.d. ◦ Cell Data: Space Group: P 21/m or P 21. a = 12.72 b = 4.02 c = 58.07 β = 102.5 Z = [4] X-ray Powder Pattern: Nordmark, Sweden. 3.47 (10), 2.89 (8), 2.80 (7), 2.18 (4), 3.70 (2), 2.86 (2), 3.23 (1) Chemistry: (1) (2) (3) (1) (2) (3) Pb 21.6 20.8 20.9 Bi 49.2 47.5 49.5 Ag 4.9 6.8 7.4 S [17.2] [17.2] 17.0 Cu 7.1 7.8 5.3 Total [100.0] [100.1] 100.1 (1) Ivigtut, Greenland; by electron microprobe, sulfur by difference, recalculated to be near 100%; corresponds to Pb3.15(Cu3.40Ag1.35)Σ=4.75Bi7.10S16.20. (2) Do.; corresponds to Pb2.95(Cu3.60Ag1.80)Σ=5.40Bi6.65S15.65. (3) Owen Lake, Canada; by electron microprobe, average of several grains; corresponds to Pb3.09(Cu2.55Ag2.10)Σ=4.55Bi7.25S16.25.