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Picromerite K2mg(SO4)2 • 6H2O C 2001-2005 Mineral Data Publishing, Version 1
Picromerite K2Mg(SO4)2 • 6H2O c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Monoclinic. Point Group: 2/m. Equant crystals, to 5 cm, showing {001}, {010}, {100}, {110}, {011}, {201}, {111}, several other forms; incrusting other salts; massive. Physical Properties: Cleavage: On {201}, perfect (synthetic). Hardness = 2.5 D(meas.) = 2.028 (synthetic). D(calc.) = 2.031 Soluble in H2O, taste bitter. Optical Properties: Transparent. Color: Colorless or white; pale red, pale yellow, gray due to impurities; colorless in transmitted light. Luster: Vitreous. Optical Class: Biaxial (+). Orientation: Y = b; X ∧ a =–1◦. Dispersion: r> v,weak. α = 1.461 β = 1.463 γ = 1.476 2V(meas.) = 47◦540 Cell Data: Space Group: P 21/a (synthetic). a = 9.066 b = 12.254 c = 6.128 β = 104◦470 Z=2 X-ray Powder Pattern: Synthetic. 3.71 (100), 4.06 (95), 4.16 (85), 3.06 (70), 2.964 (60), 3.16 (40), 2.813 (40) Chemistry: (1) (2) SO3 39.74 39.76 MgO 10.40 10.01 K2O 23.28 23.39 Cl 0.28 H2O 26.87 26.84 −O=Cl2 [0.06] Total [100.51] 100.00 • (1) Leopoldshall, Germany. (2) K2Mg(SO4)2 6H2O. Mineral Group: Picromerite group. Occurrence: Principally occurs in oceanic bedded salt deposits; a volcanic sublimate in fumaroles; in a sulfate-rich hydrothermal ore deposit. Association: Halite, anhydrite, kainite, epsomite (oceanic salt deposits); hohmannite, metavoltine, metasideronatrite (Chuquicamata, Chile). Distribution: From Vesuvius, Campania, Italy. In Germany, in Saxony-Anhalt, from the Leopoldshall-Stassfurt district, and at Aschersleben; large crystals from the Ellers mine, Neuhof, near Fulda, Hessen; in the Adolfsgl¨uck mine, Schwarmstedt, Lower Saxony. -
Rhodochrosite Gems Unstable Colouration of Padparadscha-Like
Volume 36 / No. 4 / 2018 Effect of Blue Fluorescence on the Colour Appearance of Diamonds Rhodochrosite Gems The Hope Diamond Unstable Colouration of in London Padparadscha-like Sapphires Volume 36 / No. 4 / 2018 Cover photo: Rhodochrosite is prized as both mineral specimens and faceted stones, which are represented here by ‘The Snail’ (5.5 × 8.6 cm, COLUMNS from N’Chwaning, South Africa) and a 40.14 ct square-cut gemstone from the Sweet Home mine, Colorado, USA. For more on rhodochrosite, see What’s New 275 the article on pp. 332–345 of this issue. Specimens courtesy of Bill Larson J-Smart | SciAps Handheld (Pala International/The Collector, Fallbrook, California, USA); photo by LIBS Unit | SYNTHdetect XL | Ben DeCamp. Bursztynisko, The Amber Magazine | CIBJO 2018 Special Reports | De Beers Diamond ARTICLES Insight Report 2018 | Diamonds — Source to Use 2018 The Effect of Blue Fluorescence on the Colour 298 Proceedings | Gem Testing Appearance of Round-Brilliant-Cut Diamonds Laboratory (Jaipur, India) By Marleen Bouman, Ans Anthonis, John Chapman, Newsletter | IMA List of Gem Stefan Smans and Katrien De Corte Materials Updated | Journal of Jewellery Research | ‘The Curse Out of the Blue: The Hope Diamond in London 316 of the Hope Diamond’ Podcast | By Jack M. Ogden New Diamond Museum in Antwerp Rhodochrosite Gems: Properties and Provenance 332 278 By J. C. (Hanco) Zwaan, Regina Mertz-Kraus, Nathan D. Renfro, Shane F. McClure and Brendan M. Laurs Unstable Colouration of Padparadscha-like Sapphires 346 By Michael S. Krzemnicki, Alexander Klumb and Judith Braun 323 333 © DIVA, Antwerp Home of Diamonds Gem Notes 280 W. -
Mineralization at Le Pulec, Jersey, Channel Islands; No. 1 Lode
134 SHORT COMMUNICATIONS REFERENCES McKay, W. J. (1975) Woodlawn copper-lead-zinc orebody. Ibid. 701-10. Davis, L. W. (1975) Captains Flat lead-zinc orebody. In Knight, C. L. (ed.). Economic Geology of Australia and Papua New Guinea I. Metals. Melbourne, Australasian [Revised manuscript received 2 June 1981] Institute of Mining and Metallurgy, 691-700. Malone, E. J., Olgers, F., Cucchi, F. G., Nicholas, T., and t~) Copyright the Mineralogical Society Dept. of Geology, University of Wollonoong, New South Wales, Australia F. IVOR ROBERTS [Present address: School of Applied Geology, University of New South Wales, PO Box 1, Kensinoton , NSW 2033, Australia] MINERALOGICAL MAGAZINE, MARCH 1982, VOL. 46, PP. 134-6 Mineralization at Le Pulec, Jersey, Channel Islands; No. 1 Lode THE No. 1 Lode is the westernmost and most Mineralization within the Brioverian sediments extensive of three lead-zinc veins cutting Brioverian sediments at Le Pulec. It was described by Williams Anatase is common within the sediments as 2-10 (1871) as being between 1.5 and 1.8 m in width and pm anhedral grains associated with silicates or 183 m in length, with a trend of 340 ~ and the as 10 x 2 #m laths, parallel to the basal cleavage galena was reported to have a high silver content. of the altered phyllosilicates, particularly musco- Since the investigation of the No. 3 Lode (Ixer and vite. Anatase is also found with hematite laths Stanley, 1980) it has been possible to examine (20x 2 /~m) included in early pyrite grains. A several specimens, collected from the recently re- coarse-grained (600 x 20 pm) generation of anatase discovered No. -
The Nature of Waste Associated with Closed Mines in England and Wales
The nature of waste associated with closed mines in England and Wales Minerals & Waste Programme Open Report OR/10/14 BRITISH GEOLOGICAL SURVEY MINERALS & WASTE PROGRAMME OPEN REPORT OR/10/14 The National Grid and other Ordnance Survey data are used with the permission of the The nature of waste associated Controller of Her Majesty’s Stationery Office. OS Topography © Crown with closed mines in England and Copyright. All rights reserved. BGS 100017897/2010 Wales Keywords Abandoned mine waste facilities; Palumbo-Roe, B and Colman, T England and Wales; mineral deposits; environmental impact; Contributor/editor European Mine Waste Directive. Cameron, D G, Linley, K and Gunn, A G Front cover Graiggoch Mine (SN 7040 7410), Ceredigion, Wales. Bibliographical reference Palumbo-Roe, B and Colman, T with contributions from Cameron, D G, Linley, K and Gunn, A G. 2010. The nature of waste associated with closed mines in England and Wales. British Geological Survey Open Report, OR/10/14. 98pp. Copyright in materials derived from the British Geological Survey’s work is owned by the Natural Environment Research Council (NERC) and the Environment Agency that commissioned the work. You may not copy or adapt this publication without first obtaining permission. Contact the BGS Intellectual Property Rights Section, British Geological Survey, Keyworth, e-mail [email protected]. You may quote extracts of a reasonable length without prior permission, provided a full acknowledgement is given of the source of the extract. The views and statements expressed in this report are those of the authors alone and do not necessarily represent the views of the Environment Agency. -
LOW TEMPERATURE HYDROTHERMAL COPPER, NICKEL, and COBALT ARSENIDE and SULFIDE ORE FORMATION Nicholas Allin
Montana Tech Library Digital Commons @ Montana Tech Graduate Theses & Non-Theses Student Scholarship Spring 2019 EXPERIMENTAL INVESTIGATION OF THE THERMOCHEMICAL REDUCTION OF ARSENITE AND SULFATE: LOW TEMPERATURE HYDROTHERMAL COPPER, NICKEL, AND COBALT ARSENIDE AND SULFIDE ORE FORMATION Nicholas Allin Follow this and additional works at: https://digitalcommons.mtech.edu/grad_rsch Part of the Geotechnical Engineering Commons EXPERIMENTAL INVESTIGATION OF THE THERMOCHEMICAL REDUCTION OF ARSENITE AND SULFATE: LOW TEMPERATURE HYDROTHERMAL COPPER, NICKEL, AND COBALT ARSENIDE AND SULFIDE ORE FORMATION by Nicholas C. Allin A thesis submitted in partial fulfillment of the requirements for the degree of Masters in Geoscience: Geology Option Montana Technological University 2019 ii Abstract Experiments were conducted to determine the relative rates of reduction of aqueous sulfate and aqueous arsenite (As(OH)3,aq) using foils of copper, nickel, or cobalt as the reductant, at temperatures of 150ºC to 300ºC. At the highest temperature of 300°C, very limited sulfate reduction was observed with cobalt foil, but sulfate was reduced to sulfide by copper foil (precipitation of Cu2S (chalcocite)) and partly reduced by nickel foil (precipitation of NiS2 (vaesite) + NiSO4·xH2O). In the 300ºC arsenite reduction experiments, Cu3As (domeykite), Ni5As2, or CoAs (langisite) formed. In experiments where both sulfate and arsenite were present, some produced minerals were sulfarsenides, which contained both sulfide and arsenide, i.e. cobaltite (CoAsS). These experiments also produced large (~10 µm along longest axis) euhedral crystals of metal-sulfide that were either imbedded or grown upon a matrix of fine-grained metal-arsenides, or, in the case of cobalt, metal-sulfarsenide. Some experimental results did not show clear mineral formation, but instead demonstrated metal-arsenic alloying at the foil edges. -
Structure and Composition OXIDATION ZONE
OXIDATION ZONE Structure and Composition The first scanty information on the oxidation zone of the Rubtsovskoe deposit was obtained as a result of drilling in the early 1970s. Three major subzones were distinguished downward: (1) a leached oxidized ore zone largely composed of iron hydroxides and kaolinite; (2) a secondary oxide enrichment subzone with cuprite, native copper, malachite, azurite, cerus - site; and (3) a secondary sulfide enrichment subzone (that transitions to an underlying zone of mixed ores) with chalcocite and covellite (Stroitelev et al. , 1996). As a result of our observation in underground workings, the structure, min - eralogy, and genetic features of the oxidation zone of the deposit were spec - ified substantially. The top of the orebody is supergene altered to the highest degree at the WSW flank, where it is located higher in altitude. The upper boundary of the orebody gently plunges ENE and the oxidation zone (we do not discuss the mixed ores) gradually pinches out; the oxidation zone extends along the strike of the orebody for approximately 300 m. In the WSW part of the ore - body, the oxidized ores occur in the altitude interval from +137–138 to +163 m. The lower boundary of the oxidized ores rise toward the ESE and the main part of the oxidation zone occurs in the range of +144–145 to +153–157 m. The oxidized part of the orebody varies from 2 to 8 m in thickness, reaching 15–17 m in swells and occasionally more than 20 m. Both underlying and overlapping rocks are dominated by clayey minerals; these are wall-rock argillaceous alterations, frequently altered as a result of ore oxidation especially adjacent to the contact of the orebody. -
Washington State Minerals Checklist
Division of Geology and Earth Resources MS 47007; Olympia, WA 98504-7007 Washington State 360-902-1450; 360-902-1785 fax E-mail: [email protected] Website: http://www.dnr.wa.gov/geology Minerals Checklist Note: Mineral names in parentheses are the preferred species names. Compiled by Raymond Lasmanis o Acanthite o Arsenopalladinite o Bustamite o Clinohumite o Enstatite o Harmotome o Actinolite o Arsenopyrite o Bytownite o Clinoptilolite o Epidesmine (Stilbite) o Hastingsite o Adularia o Arsenosulvanite (Plagioclase) o Clinozoisite o Epidote o Hausmannite (Orthoclase) o Arsenpolybasite o Cairngorm (Quartz) o Cobaltite o Epistilbite o Hedenbergite o Aegirine o Astrophyllite o Calamine o Cochromite o Epsomite o Hedleyite o Aenigmatite o Atacamite (Hemimorphite) o Coffinite o Erionite o Hematite o Aeschynite o Atokite o Calaverite o Columbite o Erythrite o Hemimorphite o Agardite-Y o Augite o Calciohilairite (Ferrocolumbite) o Euchroite o Hercynite o Agate (Quartz) o Aurostibite o Calcite, see also o Conichalcite o Euxenite o Hessite o Aguilarite o Austinite Manganocalcite o Connellite o Euxenite-Y o Heulandite o Aktashite o Onyx o Copiapite o o Autunite o Fairchildite Hexahydrite o Alabandite o Caledonite o Copper o o Awaruite o Famatinite Hibschite o Albite o Cancrinite o Copper-zinc o o Axinite group o Fayalite Hillebrandite o Algodonite o Carnelian (Quartz) o Coquandite o o Azurite o Feldspar group Hisingerite o Allanite o Cassiterite o Cordierite o o Barite o Ferberite Hongshiite o Allanite-Ce o Catapleiite o Corrensite o o Bastnäsite -
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 -
New Mineral Names*,†
American Mineralogist, Volume 100, pages 1649–1654, 2015 New Mineral Names*,† DMITRIY I. BELAKOVSKIY1 AND OLIVIER C. GAGNE2 1Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18 korp. 2, Moscow 119071, Russia 2Department of Geological Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada IN THIS ISSUE This New Mineral Names has entries for 10 new minerals, including debattistiite, evdokimovite, ferdowsiite, karpovite, kolskyite, markhininite, protochabournéite, raberite, shulamitite, and vendidaite. DEBATTISTIITE* for 795 unique I > 2σ(I) reflections] corner-sharing As(S,Te)3 A. Guastoni, L. Bindi, and F. Nestola (2012) Debattistiite, pyramids form three-membered distorted rings linked by Ag atoms in triangular or distorted tetrahedral coordination. Certain Ag9Hg0.5As6S12Te2, a new Te-bearing sulfosalt from Len- genbach quarry, Binn valley, Switzerland: description and features of that linkage are similar to those in the structures of crystal structure. Mineralogical Magazine, 76(3), 743–750. trechmannite and minerals of pearceite–polybasite group. Of the seven anion positions, one is almost fully occupied by Te (Te0.93S0.07). The Hg atom is in a nearly perfect linear coordination Debattistiite (IMA 2011-098), ideally Ag9Hg0.5As6S12Te2, is a new mineral discovered in the famous for Pb-Cu-Ag-As-Tl with two Te/S atoms. One of five Ag sites and Hg site, which are bearing sulfosalts Lengenbach quarry in the Binn Valley, Valais, very close (separation 1.137 Å), are partially occupied (50%). Switzerland. Debattistiite has been identified in two specimens Thus there is a statistical distribution (50:50) between Hg(Te,S)2 from zone 1 of the quarry in cavities in dolomitic marble with and AgS2(Te,S)2 polyhedra in the structure. -
Download the Scanned
JOURNAL MINERALOGICAL SOCIETY OF AMERICA 193 Boyle, Blank, Biernbaum, Clay, Frankenfield, Gordon, Oldach, Knabe, and Trudell. At Branchville, albite crystals, beryl, margarodite, spodumene, and cyrnatolite were obtained; at East Hampton, golden beryl; at White Rocks, masses of pink and greenish tourmaline; at Strickland's quarry' green tourmaline, albite, beryl, and spoctumene. Ihe report was illustrated with lantern slides of photographs taken on the trip, and exhibits of specimens. Mr. George Vaux, Jr. described a trip to Franklin, N. J. with Mr. Gordon, where some exceptionally 6ne specimens were obtained, including the following minerals: apatite, copper, rhodonite, datolite, willemite, glaucochroite, Ieuco- phoenicite, hancockite, wernerite, franklinite, and arsenopyrite. Seuurr, G. Goroon, SecretarY, BOOK REVIEW A LIST OF NEW CRYSTAL FORMS OF MINERALS. Hnnstnr P Wurrrocr. Bur,retrn ol Tnr: Auenlcau Museunr ol NATURAT-Ifrsronv, Vor. xrvr, Ant. II, pp.89-278,1[ewYorh,1922. In July 1910, the author published. in The Sthool of Mines Quarterl,L (Vol. 31, No. 4 and VoI. 32, No. 1) a list of new crystal forms which had been recorded in the literature since the appearance of Goldschmidt's Index der Krystallformen der Mineralien (1336_91). The present bulletin includes the former data and extends the compilation to 1920, thus furnishing crystallographers with a most useful reference work covering a period of thirty years (1890-1920). References prior to 1890 being available in Goldschmidt's "Index." Where a new orientation of a species has been proposed and accepted, forms previously cited have been transposed to correspond with the new axial elements In such cases the elements used are given at the head of the species. -
Nickeline Nias C 2001-2005 Mineral Data Publishing, Version 1
Nickeline NiAs c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Hexagonal. Point Group: 6/m 2/m 2/m. Commonly in granular aggregates, reniform masses with radial structure, and reticulated and arborescent growths. Rarely as distorted, horizontally striated, {1011} terminated crystals, to 1.5 cm. Twinning: On {1011} producing fourlings; possibly on {3141}. Physical Properties: Fracture: Conchoidal. Tenacity: Brittle. Hardness = 5–5.5 VHN = n.d. D(meas.) = 7.784 D(calc.) = 7.834 Optical Properties: Opaque. Color: Pale copper-red, tarnishes gray to blackish; white with strong yellowish pink hue in reflected light. Streak: Pale brownish black. Luster: Metallic. Pleochroism: Strong; whitish, yellow-pink to pale brownish pink. Anisotropism: Very strong, pale greenish yellow to slate-gray in air. R1–R2: (400) 39.2–45.4, (420) 38.0–44.2, (440) 36.8–43.5, (460) 36.2–43.2, (480) 37.2–44.3, (500) 39.6–46.4, (520) 42.3–48.6, (540) 45.3–50.7, (560) 48.2–52.8, (580) 51.0–54.8, (600) 53.7–56.7, (620) 55.9–58.4, (640) 57.8–59.9, (660) 59.4–61.3, (680) 61.0–62.5, (700) 62.2–63.6 Cell Data: Space Group: P 63/mmc. a = 3.621(1) c = 5.042(1) Z = 2 X-ray Powder Pattern: Unknown locality. 2.66 (100), 1.961 (90), 1.811 (80), 1.071 (40), 1.328 (30), 1.033 (30), 0.821 (30) Chemistry: (1) (2) Ni 43.2 43.93 Co 0.4 Fe 0.2 As 55.9 56.07 Sb 0.1 S 0.1 Total 99.9 100.00 (1) J´achymov, Czech Republic; by electron microprobe, corresponds to (Ni0.98Co0.01 Fe0.01)Σ=1.00As1.00. -
Mineralogical Chemistry
View Article Online / Journal Homepage / Table of Contents for this issue 282 ABSTRACTS OF CHEMICAL PAPERS. Downloaded on 22 February 2013 Published on 01 January 1900 http://pubs.rsc.org | doi:10.1039/CA9007805282 Mineralogical Chemistry. Roumanian Petroleuws. By A LFONS 0. SALIGNY(Chem. Centy., 1900, 60 ; from Bul. Bozcmccnie, 8, 351 --365).-In the original paper, the physical and chemical properties of 12 kinds of Roumanian MINERALOGICAL CHEMISTRY View Article Online283 petroleum are described and tabulated. The flash points of the various fractions are given, and their suitability for use as burning oils is also discussed. These petroleums contain very variable amounts of volatile oils, and ethylisobutane and isopropane were found in the fractions boiling below 70”. E. w. w. Melonite from South Australia. By ALFREDJ. HIGGIN(Trans. Roy. Xoc. South Austdia, 1899, 23, 21 1-212).-This mineral, pre- viously only known from California, has now been found with quartz and calcite at Worturpa, South Australia. The thin lamells have a brilliant metallic lustre; the cleavage planes are silver-white to reddish- brown. H- 1.5 ; sp. gr., 7.6. Analyses I and IT: agree with the formula Ni,Te, (compare this vol., ii, 22). Te. Xi. Au. Insol. Total. I. 74.49 22.99 0.329 2.091 99.90 11. 71.500 21.274 0.018 7*319 100.11 Traces of bismuth and lead are present. On dissolving the mineral in nitric acid, the gold is left as bright spangles. L. J. S. Titaniferous Magnetites. By JAMESF. KENP(School of Mines Quart., 1899, 20, 323-356 ; 21, 56-65).-Titaniferous magnetites, with the exception of the occnrrences in sands, are almost invariably found associated with rocks of the gabbro type, and have originated by a process of segregation from the magma, The mineral, as a rule, contains vanadium, cbromium, nickel and cobalt, which together may amount to several per cent.