DOCSLIB.ORG

New Mineral Names E55

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text

Load more

American Mineralogist, Volume 67, pages 854-860, l,982 NEW MINBRAL NAMES* MrcHa.Br-FrerscHen, G. Y. CHeo ANDJ. A. MeNoenrNo Arsenocrandallite* Although single-crystal X-ray ditrraction study showed no departure from cubic symmetry, the burtite unit Kurt Walenta (1981)Minerals of the beudantite-crandallitegroup cell is consid- eredto be rhombohedralwith space-groupR3, a,6 = 8.128A,a = from the Black Forest: Arsenocrandallite and sulfate-free 90', Z = 4 (a : 11.49,c : 14.08Ain hexagonalserting). weilerite. Schweiz. Mineralog. petrog. Mitt., 61,23_35 (in The German). strongestlines in the X-ray powder ditrraction pattern are (in A, for CoKa, indexing is based on the pseudo-cubic cell): Microprobe analysis gave As2O522.9, p2}s 10.7, Al2O32g.7, 4.06(v sX200), I .E I 4(s)(420),1.657 (s)@22), 0. 9850(sX820,644) and Fe2O31.2, CaO 6.9, SrO 6.0, BaO 4.3, CuO 1.8,ZnO 0.3,Bi2O3 0.9576(sX822,660). 2.4, SiO2 3.2, H2O (loss on ignition) 11.7, sum l}}.lVo cor_ Electron microprobe analysis(with HrO calculatedto provide responding to (Ca6.5,,S16.2eBas.1aBir.65)1.6e(Al2.7eCus.11Fefifl7 the stoichiometric quantity of OH) gave SnO256.3, CaO 20.6, Zno.oz)r.gs(Aso.ss P6.75Si6.26) z.oo He.cq O13.63,or MgO 0.3, H2O 20.2, total 97.4 wt.Vo. These data give an (Ca,Sr)Al:Ht(As,P)Oal2(OH)6. Spectrographicanalysis showed empirical formula of (Canes2Mga oro)>r.oozSno ngn(OH)6 or, ideal- small amounts of Na, K, and Cl. A second sampleis nearly free ly, CaSn(OH)6. of Ba and P. The mineral is partly dissolved by cold l: I HCI or Burtite occurs in a garnetite in a tin skarn at33.31,26"Long., HNO3, dissolvedslowly by hot l:l HCl. 5"49'50' Lat. on the west bank of the Beht River in central The strongest X-ray lines (21 given) are 5.g4(l0Tl,lll), Morocco. Associatedminerals are: wickmanite, stokesite, dato- 3.55(9Xl120, l0l4), 2.e9(r0d)(o2Tt,I 123,0115), 1.srs lite, pectolite, a member of the apophyllite group, varlamoffite, (5)(1235,0227,0009),1.769(6X2240,2028). calculated cell con- andradite, wollastonite, malayaite, clinopyroxene and loellin- stants are: hexagonalsetting a = 7.08, c = 17.274.,Z = 3: gite. rhombohedralsetting a = 7.06A, a 60.18.,Z : l, the second The nameis for Prof. Donald M. Burt, Arizona State Universi- samplehada:7.06, c = 17.224.,ora = 7.MA, o 60.19". ty. Type material is preserved at the Universitd catholique de The mineral forms reniform crusts and spherulitic aggregates Louvain, LouvainJa-Neuve,Belgium. J.A.M. up to 0.1 mm. Color blue to bluish-green,luster vitreous. No cleavage,fracture conchoidal, H - 5V2,D meas.f.25+0.1, calc. 3.30.Isotropic to weakly birefringent, = n(average) 1.625+0.01, Caswellsilverite* but rarely down to 1.600and up to 1.650.Under the microscope may show triangular sectors. A. Okadaand Klaus Keil, Caswellsilverite(1981) NaCrS2, a new The mineral was found on old dumps jn the Neubulach mining mineral in the Norton County enstatite achondrite. Meteorit- district, Black Forest, Germany, associated with brochantite, ics, 16,370-371 (abs.). chalcophyllite, parnauite, arseniosiderite,mansfieldite, and cor- roded tennantite. Electronmicroprobe analysis gave S 46.3,Cr 37.4, Ti 0.18, Mn 0.08, Na 15.7, total 99.7Vo, corresponding to NaCrS2. X-ray The name is for the composition and relation to crandallite. M.F. study showsit to be trigonal, spacegroup RTm, a = 3.55,c = 19.5A. (hexagonal setting). The strongest X-ray lines are 6.49(7)(003),2.60(10)(014), 2.07(E)(017), 1.910(8)(108), 1.779(8Xl l0), r.46s(6)(204), Burtite* l. I 34(6X0.l. 16). The mineral occurs in anhedral grains up to I mm in size, P. M. Sonnet (1981)Burtite, calcium hexahydroxostannate,a associatedwith daubreelite,titanian troilite, alabandite,penyite, new mineral from El Hamman, central Morocco. Can. Miner_ and another Na-Cr sulfide. Yellowish-gray to light gray, luster al., 19, 197-401. metallic. Pleochroic, O pale yellow, E gray in air; O pale greenish yellow, E dark gray in oil. The mineral occurs as octahedra (up to 2 mm across)with an The nameis for CaswellSilver, U. S. Geologist.M.F. earthy, yellow surface caused by alteration to varlamoffite. Burtite is colorless, has a vitreous luster, is very brittle with H about 3. It is non-fluorescentin ultraviolet light and has a good cubic cleavage.D meas. 3.28(l), calc. 3.22. Optically, burtite Chromium* appearsto be isotropic with n = 1.633but thick grains are very Yue Suchin, Wang Wenying and Sun Sujing (1981) A new weakly birefringent and show uniaxial positive interference mineral-native chromium. Kexue Tongbao, 26, 959-960 (tn figures. Chinese). Analysisgave Cr 98.01,Fe 0.001,Cu 0.366.Zn 1.40.sum 9.78Vo,corresponding to xMinerals Cr 98.59,Zn 1.12,Cu 0.28 atomicVo. marked with asterisks were approved before publi- Cu and Zn are probably in substitution for Cr. The material is cation by the Commissionon New Minerals and Mineral Names homogeneous,showing no evidenceof exsolution, under reflect- of the International Mineralogical Association. ing and electron microscopes. 0003-004)v82l0708-0854$00.50 854 NEW MINERAL NAMES E55 The mineral is white with a yellow tint under reflected light. It itiesgave Bi 68.E-73.3,Pb 0-1.2, Sb 0-0. I 5, Te 19.3-25'3'S 5.l- is isotropic without internal reflection. Reflectancedata are 480 6.3, Se 0-0.4, sum 99.1-100.3Vo,giving the formula above. nm, 65.3;546 nm, 67.9, 589nm, 68.E,656 nm,70.0Vo. X-ray study showed the mineral to be hexagonal,space group The mineral occurs in artificial heavy sandsof massiveores in P3m,P\ml, or P321,a : 4.248,c : 23.224,Z = 9,D calc.7.88. the contact zone between ultrabasic rocks and siliceous marble Weak lines indicate that the value of c should be tripled. The in Sichuan, China. The mineral is finely granular (grain size strongestX-ray lines (35 given) are 3.11(10)(1.0.1.12)' about 20 pm), closely associated with another new mineral 2.28(6)(r.0f.24), 2.13(5Xl lZ0) , and 1.942(4)(0.0.0.36). Clu^Zn2(Ct 32.52, Zn 67.47, sum 99.99%,or Cu1662n2 s16). The Ingodite is silver-white, luster metallic, cleavageperfect, non- mineral CuZn2 forms rims around chromium. Other associated magnetic,brittle, soft. H on 2 samples64.6 and 60.9 kg/sq. mm' mineralsare pyrrhotite, pentlanditechalcopyrite, pyrite sulfoar- In reflectedlight white, birefringencenoticeable in air (creamyto senides and platinum group minerals. The name is for the grayish-white), moderately anisotropic. Reflectancesare given composition.G.Y.C. at 15wave lengths(R" and Ro):(av. of 2) 460nm, 55.5,51.4; 540 nm, 57.7,52.5;580 nm, 57.8,52.4;660 nm, 56'9,5l.6Vo' The name is for the localitY. M.F. Gruzdevite* E. P. Spiridonov,L. Ya, Krapiva, A. K., Gapeev,V. I. Stepa- Karnaishilite* nov, E. Ya. Prushinskaya,and V. Yu. Volgin (1981)Gruzde- vite, Cu5Hg3SbaSl2,a n€w mineral from the Chauvai antimo- Etsuo Uchida and J. T. Iiyama (1981) On kamaishilite, ny-mercury deposit, Central Asia. Doklady Akad. Nauk CazAlzSiOo(OH)2,a new mineral (tetragonal), dimorphous SSSR,261, 971-976 (in Russian). with bicchulite, from the Kamaishi Mine, Japan. Proc. Japan Acad..57B.239-243. Electron microprobe analyses by E.P.S. on 6 samples gave (rangeand average)S 20.29-20.91,20.44; Sb 25.29-27.22, 26.21; Microprobe analysis (HzO by wet chemical analysis) gave As 0.06-0.57,0.37 ; Hg 32.23-33.23,32.7 3 ; Fe trace-0.40,0.29 ; SiO220.03, Al2O3 34.15, FeO 0.21,MgO 0.02,CaO 37.42,H2O* Cu 19.26-20.77,19.99, sum 98.93-101.00,100.03Vo. The average 6.1, HrO- 0.2, sum 98j3%, correspondingto Ca1eeFee6l) correspondsto (Cu5s7Fe6.16)Hg3 sa(Sba 61As6.oe)S1 1.6e. A com- Al2 oosioeeo5 ss(OH)z 02 or Ca2Al2SiO6(OH)2,a dimorph of bic- plete series exists from gruzdevite to aktashite, Cu6Hg3AsaS12 chulite. : (58,562 (1973)). Gruzedevite is isotypicwith nowackiite. X-ray powder data are indexed on a tetragonal cell with a X-ray study showsgruzdevite to be rhombohedral, a = 13.902, 8.850,c = 8.7704.,Z = 4. The strongestX-ray lines (28 given) c = 9,4324.,2:3, a,nE.6094.,a 107"41',2: l,D calc.5.88. are 3.607(I 00)(2rr,r 12), 2.799(85X310, 30r), 2.777 (40)(103)' The strongest X-ray lines (50 given) are 3.16(10)(311,003), 2.s47 (40)(222), 2.085(30)(3 30,4 I I ), I .557(35X404). r.929(9\(s20,314),1.645(8)(62r,s23,31s), r.2sr(s) The mineral occurs as grains about 0.1 mm in diameter. (65r,9 | r,625,317), 1 . r l 3(6X654,9 l 4,3 l 8, r 0. l .2). Colorlessand transparent.No cleavagewas observed. Optically In reflectedlight the mineral resemblesaktashite, tetrahedrite, nearly isotropic, n : 1.629, close to that of bicchulite. No and metacinnabar.Anisotropy weak, AR - 0.06. Reflectances conoscopicinterference figure was observed. are given at 8 wavelengths,R-"* = 460nm, 33.1;540 nm, 32.8; The mineral occurs in vesuvianite skarn, associated with 580nm, 32.7;660nm, 3t.9Vo.Microhardness295t5 kg/sq.mm at vesuvianite, "hydrograndite", and small amounts of perovskite, 30 g load.
Recommended publications
  • New Mineral Names

    New Mineral Names

    -------- American Mineralogist, Volume 81, pages 1282-1286, 1996 NEW MINERAL NAMES. JOHN L. JAMBOR,l VLADIMIR A. KOVALENKER,2 JACEK PuZIEWICZ,3 ANDANDREW C. ROBERTS4 lDepartment of Earth Sciences, University of Waterloo, Waterloo, Ontario N2L 3Gl, Canada 21GREM RAN, Russian Academy of Sciences, Moscow 10917, Staromonetnii 35, Russia 'Institute of Geological Sciences, University of Wroc1aw, Cybulskiego 30, 50-205 Wroc1aw, Poland 4Geological Survey of Canada, 601 Booth Street, Ottawa KIA OE8, Canada Clinoatacamite* mineral from the Clear Creek claim, San Benito Coun- ty, California: Description and crystal structure. Pow- J.L. Jambor, J.E. Dutrizac, AC. Roberts, J.D. Grice, J.T. Szymanski (1996) Clinoatacamite, a new polymorph of der Diffraction, 11(1), 45-50. Cu2(OH)3C1,and its relationship to paratacamite and The mineral occurs sparingly with calomel, native mer- "anarakite." Can. Mineral., 34, 61-72. cury, cinnabar, montroydite, and quartz in a single spec- J.D. Grice, J.T. Szymanski, J.L. Jambor (1996) The crys- imen of float near a prospect pit at the former Clear Creek tal structure of clinoatacamite, a new polymorph of mercury mine in the new Idria district of California. The Cu2(OH)3Cl. Can. Mineral., 34, 73-78. specimen contains subhedral to anhedral crystals, typi- Electron microprobe analysis gave CuO 74.7 (73.4- cally bladed to platy, maximum size 0.3 x 0.3 mm, stri- 76.0), C1l6.5 (15.7-17.2), H20 (calc.) 13.5, sum 104.7, ated [001], black to dark brown-black color, dark red- less 0 == Cl 3.7, total 101.0 wt%, corresponding to brown to black streak, opaque to translucent on thin CU1.9603.o3H3.l1Clo.97, ideally Cu2(OH)3C1.
  • Bromide from Terlingua, Texas

    Bromide from Terlingua, Texas

    Canadian Mineralogist Vol. 19, pp. 393-396 (1981) COMANCHEITE,A NEW MEBGURYOXVCHLORIDE - BROMIDE FROMTERLINGUA, TEXAS A.C. ROBERTS eNn H.G. ANSELL Geologicalsurvey of Canada,60l Booth street, ottawa, ontario KlA 088 P.J. DUNN Depdrtmentol Mineral Sciences,Sntithsonian Instittttion, Washington, D.C. 20560, US'A' ABSTRACT en lumibre ultraviolette.Extinction paralldle.allon- gementpositif. Les indicesde r6fraction se situent '1..79. Comancheite is a new mercurv oxychloride- entre 1.78 et Densit6 mesur6e7.7G). cal- bromide mineral from the Mariposa mine. Terlingua cul6e 8.0. A la microsonde6lectronique' on trouve district, Texas. Associated minerals are calcite, la formule Hg,r(Clr.o,Brs.on)t".nrOo.n".d'oi la for- goethite, hematite and quartz. Comancheite occurs mule id6alisdeHgrs(Cl,Br)nOo. La comanch€iteest as anhedral crystalline massesand as stellate groups orthorhombique.groupe spatialPnnm ou Pnn2. a of acicilar crystals, elongate parallel to c. a\reraging 18.4t(l), b 21.64(l),c 6.677(21A', z = 4' Les 80 um lons and 3 to 4 um wide. Masses are red seot raies les plus intensesdu clich6 de poudre (d with an orange-yellow streak and have a resinous (A), / sur 6chellede l0) sont: 5.68(7).5.42(6), lustre; crystals are orange-red to vellow. vitreous 2.878(8). 2.71I(il, 2.669(10). 2.4s7(5\ et and nanslucent to transparent. Comancheite is 1.415(5). brittle with fair cleavase parallel to {001} and (Traduit Par la R6daction) not {ll0}, has a Mohs hardness of 2 and does de lieht. Opticallv. coman- Mots-clds: comanch6ite,oxychlorure-bromure fluoiesce in ultraviolet mine Mari- exhibits parallel extinction and is length- mercure.
  • Mineral Processing

    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
  • Mercury--Quicksilver

    Mercury--Quicksilver

    scueu« No. 12 Mineral Technology Series No 6 University of Arizona Bulletin Mercury---Quicksilver By P. E. JOSEPH SECOND ISSUE NOVEMBER, 1916. Entered as second class matter November 2:1, 191~, at the postoftice at Tucson, Arizona. under the Act ot August 24, 1912. Issued weekb". September to Ya)·. PUBLISHED BY THE University of Arizona Bureau of Mines CHARLES F. WILLIS, Director TUCSON, ARIZONA 1916-17 BIBLIOGRAPHY Bancroft, Howland. Notes on the occurrence of cinnabar in central western Arizona. U. S. G. S. Bull. 430, pp. 151-153, 1910. Becker, G. F. Geology of- the quicksilver deposits of the Pacific slope, with atlas. Mon. 13, p. 486, 1888. Only the atlas in stock. Quicksilver Ore Deposits; Mineral Resources U. S. for 1892, pp. 139-168, 1893. Christy, S. B. Quicksilver reduction at New Almaden, Cal. Min- eral Resources U. S. for 1883-1884, pp. 603-636, 1885. Hillebrand, W. F., and Schaller, W. T. Mercury miner-als from Terlingua, Tex. U. S. G. S. Bull. 405, pp. 174, 1909. McCaskey, H. D. Quicksilver in 1912; Mineral Resources U. S. for 1912, Pt. 1, pp. 931-948, 1913. Quicksilver in 1913-Production and Resources; Mineral Resources U. S. for 1913, Pt. 1, pp. 197-212, 1914. Melville, W. H., and Lindgren, Waldemar. Contributions to the mineralogy of the Pacific coast. U. S. G. S. Bull. 61, 30 pp., 1890. Parker, E. W. Quicksilver; Twenty-first Ann. Rept. U. S. G. S., Pt. 6, pp. 273-283, 1901. University of Arizona Bulletin BULLETIN No. 12 SECOND ISSUE, NOVEMBER, 1916 MERCURY-QUICKSILVER By P.
  • Supergene Mineralogy and Processes in the San Xavier Mine Area, Pima County, Arizona

    Supergene Mineralogy and Processes in the San Xavier Mine Area, Pima County, Arizona

    Supergene mineralogy and processes in the San Xavier mine area, Pima County, Arizona Item Type text; Thesis-Reproduction (electronic) Authors Arnold, Leavitt Clark, 1940- Publisher The University of Arizona. Rights Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author. Download date 28/09/2021 18:44:48 Link to Item http://hdl.handle.net/10150/551760 SUPERGENE MINERALOGY AND PROCESSES IN THE SAN XAVIER MINE AREA— PIMA COUNTY, ARIZONA by L. Clark Arnold A Thesis Submitted to the Faculty of the DEPARTMENT OF GEOLOGY In Partial Fulfillment of the Requirements For the Degree of MASTER OF SCIENCE In the Graduate College THE UNIVERSITY OF ARIZONA 1964 STATEMENT BY AUTHOR This thesis has been submitted in partial fulfillment of require­ ments for an advanced degree at The University of Arizona and is de­ posited in the University Library to be made available to borrowers under rules of the Library. Brief quotations from this thesis are allowable without special permission, provided that accurate acknowledgment of source is made. Requests for permission for extended quotation from or reproduction of this manuscript in whole or in part may be granted by the head of the major department or the Dean of the Graduate College when in his judg­ ment the proposed use of the material is in the interests of scholarship. In all other instances, however, permission must be obtained from the author.
  • Marinellite, a New Feldspathoid of the Cancrinite-Sodalite Group

    Marinellite, a New Feldspathoid of the Cancrinite-Sodalite Group

    Eur. J. Mineral. 2003, 15, 1019–1027 Marinellite, a new feldspathoid of the cancrinite-sodalite group ELENA BONACCORSI* and PAOLO ORLANDI Dipartimento di Scienze della Terra, Universita` di Pisa, Via S. Maria 53, I-56126 Pisa, Italy * Corresponding author, e-mail: [email protected] Abstract: Marinellite, [(Na,K)42Ca6](Si36Al36O144)(SO4)8Cl2·6H2O, cell parameters a = 12.880(2) Å, c = 31.761(6) Å, is a new feldspathoid belonging to the cancrinite-sodalite group. The crystal structure of a twinned crystal was preliminary refined in space group P31c, but space group P62c could also be possible. It was found near Sacrofano, Latium, Italy, associated with giuseppettite, sanidine, nepheline, haüyne, biotite, and kalsilite. It is anhedral, transparent, colourless with vitreous lustre, white streak and Mohs’ hardness of 5.5. The mineral does not fluoresce, is brittle, has conchoidal fracture, and presents poor cleavage on {001}. Dmeas is 3 3 2.405(5) g/cm , Dcalc is 2.40 g/cm . Optically, marinellite is uniaxial positive, non-pleochroic, = 1.495(1), = 1.497(1). The strongest five reflections in the X-ray powder diffraction pattern are [d in Å (I) (hkl)]: 3.725 (100) (214), 3.513 (80) (215), 4.20 (42) (210), 3.089 (40) (217), 2.150 (40) (330). The electron microprobe analysis gives K2O 7.94, Na2O 14.95, CaO 5.14, Al2O3 27.80, SiO2 32.73, SO3 9.84, Cl 0.87, (H2O 0.93), sum 100.20 wt %, less O = Cl 0.20, (total 100.00 wt %); H2O calculated by difference. The corresponding empirical formula, based on 72 (Si + Al), is (Na31.86K11.13Ca6.06) =49.05(Si35.98Al36.02)S=72O144.60(SO4)8.12Cl1.62·3.41H2O.
  • Liroconite Cu2al(Aso4)(OH)4 • 4H2O C 2001-2005 Mineral Data Publishing, Version 1

    Liroconite Cu2al(Aso4)(OH)4 • 4H2O C 2001-2005 Mineral Data Publishing, Version 1

    Liroconite Cu2Al(AsO4)(OH)4 • 4H2O c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Monoclinic. Point Group: 2/m. Typically as crystals with a flattened octahedral or lenticular aspect, dominated by {110} and {011} and striated parallel to their intersections, also {001}, {010}, {100}, to 3.6 cm, alone and in sub-parallel groups. May be granular, massive. Physical Properties: Cleavage: On {110}, {011}, indistinct. Fracture: Uneven to conchoidal. Hardness = 2–2.5 D(meas.) = 2.94–3.01 D(calc.) = [3.03] Optical Properties: Transparent to translucent. Color: Sky-blue, bluish green, verdigris-green, emerald-green; pale blue to pale bluish green in transmitted light. Streak: Pale blue to pale green. Luster: Vitreous to resinous. Optical Class: Biaxial (–). Orientation: Y = b; Z ∧ a =25◦. Dispersion: r< v,moderate. α = 1.612(3) β = 1.652(3) γ = 1.675(3) 2V(meas.) = n.d. 2V(calc.) = 72(5)◦ Cell Data: Space Group: I2/a. a = 12.664(2) b = 7.563(2) c = 9.914(3) β =91.32(2)◦ Z=4 X-ray Powder Pattern: Cornwall, England. 6.46 (10), 3.01 (10), 5.95 (9), 2.69 (6), 3.92 (5), 2.79 (5), 2.21 (5) Chemistry: (1) (2) P2O5 3.73 As2O5 23.05 26.54 Al2O3 10.85 11.77 Fe2O3 0.98 CuO 36.38 36.73 H2O 25.01 24.96 Total 100.00 100.00 • (1) Cornwall, England. (2) Cu2Al(AsO4)(OH)4 4H2O. Occurrence: A rare secondary mineral in the oxidized zone of some copper deposits. Association: Olivenite, chalcophyllite, clinoclase, cornwallite, strashimirite, malachite, cuprite, “limonite”.
  • 26 May 2021 Aperto

    26 May 2021 Aperto

    AperTO - Archivio Istituzionale Open Access dell'Università di Torino The crystal structure of sacrofanite, the 74 Å phase of the cancrinite–sodalite supergroup This is the author's manuscript Original Citation: Availability: This version is available http://hdl.handle.net/2318/90838 since Published version: DOI:10.1016/j.micromeso.2011.06.033 Terms of use: Open Access Anyone can freely access the full text of works made available as "Open Access". Works made available under a Creative Commons license can be used according to the terms and conditions of said license. Use of all other works requires consent of the right holder (author or publisher) if not exempted from copyright protection by the applicable law. (Article begins on next page) 05 October 2021 This Accepted Author Manuscript (AAM) is copyrighted and published by Elsevier. It is posted here by agreement between Elsevier and the University of Turin. Changes resulting from the publishing process - such as editing, corrections, structural formatting, and other quality control mechanisms - may not be reflected in this version of the text. The definitive version of the text was subsequently published in MICROPOROUS AND MESOPOROUS MATERIALS, 147, 2012, 10.1016/j.micromeso.2011.06.033. You may download, copy and otherwise use the AAM for non-commercial purposes provided that your license is limited by the following restrictions: (1) You may use this AAM for non-commercial purposes only under the terms of the CC-BY-NC-ND license. (2) The integrity of the work and identification of the author, copyright owner, and publisher must be preserved in any copy.
  • Aurichalcite (Zn, Cu)5(CO3)2(OH)6 C 2001-2005 Mineral Data Publishing, Version 1

    Aurichalcite (Zn, Cu)5(CO3)2(OH)6 C 2001-2005 Mineral Data Publishing, Version 1

    Aurichalcite (Zn, Cu)5(CO3)2(OH)6 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Monoclinic, pseudo-orthorhombic by twinning. Point Group: 2/m. As acicular to lathlike crystals with prominent {010}, commonly striated k [001], with wedgelike terminations, to 3 cm. Typically in tufted divergent sprays or spherical aggregates, may be in thick crusts; rarely columnar, laminated or granular. Twinning: Observed in X-ray patterns. Physical Properties: Cleavage: On {010} and {100}, perfect. Tenacity: “Fragile”. Hardness = 1–2 D(meas.) = 3.96 D(calc.) = 3.93–3.94 Optical Properties: Transparent to translucent. Color: Pale green, greenish blue, sky-blue; colorless to pale blue, pale green in transmitted light. Luster: Silky to pearly. Optical Class: Biaxial (–). Pleochroism: Weak; X = colorless; Y = Z = blue-green. Orientation: X = b; Y ' a; Z ' c. Dispersion: r< v; strong. α = 1.654–1.661 β = 1.740–1.749 γ = 1.743–1.756 2V(meas.) = Very small. Cell Data: Space Group: P 21/m. a = 13.82(2) b = 6.419(3) c = 5.29(3) β = 101.04(2)◦ Z=2 X-ray Powder Pattern: Mapim´ı,Mexico. 6.78 (10), 2.61 (8), 3.68 (7), 2.89 (4), 2.72 (4), 1.827 (4), 1.656 (4) Chemistry: (1) CO2 16.22 CuO 19.87 ZnO 54.01 CaO 0.36 H2O 9.93 Total 100.39 (1) Utah; corresponds to (Zn3.63Cu1.37)Σ=5.00(CO3)2(OH)6. Occurrence: In the oxidized zones of copper and zinc deposits. Association: Rosasite, smithsonite, hemimorphite, hydrozincite, malachite, azurite.
  • Joteite, Ca2cual[Aso4][Aso3(OH)]2(OH)2·5H2O, a New Arsenate with a Sheet Structure and Unconnected Acid Arsenate Groups

    Joteite, Ca2cual[Aso4][Aso3(OH)]2(OH)2·5H2O, a New Arsenate with a Sheet Structure and Unconnected Acid Arsenate Groups

    Mineralogical Magazine, August 2013, Vol. 77(6), pp. 2811–2823 Joteite, Ca2CuAl[AsO4][AsO3(OH)]2(OH)2·5H2O, a new arsenate with a sheet structure and unconnected acid arsenate groups 1, 2 3 3 4 5 6 A. R. KAMPF *, S. J. MILLS ,R.M.HOUSLEY ,G.R.ROSSMAN ,B.P.NASH ,M.DINI AND R. A. JENKINS 1 Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA 2 Geosciences, Museum Victoria, GPO Box 666, Melbourne 3001, Australia 3 Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA 4 Department of Geology and Geophysics, University of Utah, Salt Lake City, UT 84112, USA 5 Pasaje San Agustin 4045, La Serena, Chile 6 4521 N Via Madre, Tucson, AZ 85749, USA [Received 18 Mary 2013; Accepted 11 July 2013; Associate Editor: F. Ca´mara] ABSTRACT Joteite (IMA2012-091), Ca2CuAl[AsO4][AsO3(OH)]2(OH)2·5H2O, is a new mineral from the Jote mine, Tierra Amarilla, Copiapo´ Province, Atacama, Chile. The mineral is a late-stage, low- temperature, secondary mineral occurring with conichalcite, mansfieldite, pharmacoalumite, pharmacosiderite and scorodite in narrow seams and vughs in the oxidized upper portion of a hydrothermal sulfide vein hosted by volcanoclastic rocks. Crystals occur as sky-blue to greenish-blue thin blades, flattened and twinned on {001}, up to ~300 mm in length, and exhibiting the forms {001}, {010}, {11¯0}, {21¯0} and {111}. The blades are commonly intergrown in wheat-sheaf-like bundles, less commonly in sprays, and sometimes aggregated as dense crusts and cavity linings.
  • B Clifford Frondel

    B Clifford Frondel

    CATALOGUE OF. MINERAL PSEUDOMORPHS IN THE AMERICAN MUSEUM -B CLIFFORD FRONDEL BU.LLETIN OF THEAMRICANMUSEUM' OF NA.TURAL HISTORY. VOLUME LXVII, 1935- -ARTIC-LE IX- NEW YORK Tebruary 26, 1935 4 2 <~~~~~~~~~~~~~7 - A~~~~~~~~~~~~~~~, 4~~~~~~~~~~~~~~~~~~~~~~~~~~~~~4 4 4 A .~~~~~~~~~~~~~~~~~~~~~~~~~~4- -> " -~~~~~~~~~4~~. v-~~~~~~~~~~~~~~~~~~t V-~ ~~~~~~~~~~~~~~~~ 'W. - /7~~~~~~~~~~~~~~~~~~~~~~~~~~7 7-r ~~~~~~~~~-A~~~~ ~ ~ ~ ~ ~ ~ ~ ~ ~ -'c~ ~ ~ ' -7L~ ~ ~ ~ ~ 7 54.9:07 (74.71) Article IX.-CATALOGUE OF MINERAL PSEUDOMORPHS IN THE AMERICAN MUSEUM OF NATURAL HISTORY' BY CLIFFORD FRONDEL CONTENTS PAGE INTRODUCTION .................. 389 Definition.389 Literature.390 New Pseudomorphse .393 METHOD OF DESCRIPTION.393 ORIGIN OF SUBSTITUTION AND INCRUSTATION PSEUDOMORPHS.396 Colloidal Origin: Adsorption and Peptization.396 Conditions Controlling Peptization.401 Volume Relations.403 DESCRIPTION OF SPECIMENS.403 INTRODUCTION DEFINITION.-A pseudomorph is defined as a mineral which has the outward form proper to another species of mineral whose place it has taken through the action of some agency.2 This precise use of the term excludes the regular cavities left by the removal of a crystal from its matrix (molds), since these are voids and not solids,3 and would also exclude those cases in which organic material has been replaced by quartz or some other mineral because the original substance is here not a mineral. The general usage of the term is to include as pseudomorphs both petrifactions and molds, and also: (1) Any mineral change in which the outlines of the original mineral are preserved, whether this surface be a euhedral crystal form or the irregular bounding surface of an embedded grain or of an aggregate. (2) Any mineral change which has been accomplished without change of volume, as evidenced by the undistorted preservation of an original texture or structure, whether this be the equal volume replacement of a single crystal or of a rock mass on a geologic scale.
  • Journal of the Russell Society, Vol 4 No 2

    Journal of the Russell Society, Vol 4 No 2

    JOURNAL OF THE RUSSELL SOCIETY The journal of British Isles topographical mineralogy EDITOR: George Ryba.:k. 42 Bell Road. Sitlingbourn.:. Kent ME 10 4EB. L.K. JOURNAL MANAGER: Rex Cook. '13 Halifax Road . Nelson, Lancashire BB9 OEQ , U.K. EDITORrAL BOARD: F.B. Atkins. Oxford, U. K. R.J. King, Tewkesbury. U.K. R.E. Bevins. Cardiff, U. K. A. Livingstone, Edinburgh, U.K. R.S.W. Brai thwaite. Manchester. U.K. I.R. Plimer, Parkvill.:. Australia T.F. Bridges. Ovington. U.K. R.E. Starkey, Brom,grove, U.K S.c. Chamberlain. Syracuse. U. S.A. R.F. Symes. London, U.K. N.J. Forley. Keyworth. U.K. P.A. Williams. Kingswood. Australia R.A. Howie. Matlock. U.K. B. Young. Newcastle, U.K. Aims and Scope: The lournal publishes articles and reviews by both amateur and profe,sional mineralogists dealing with all a,pecI, of mineralogy. Contributions concerning the topographical mineralogy of the British Isles arc particularly welcome. Not~s for contributors can be found at the back of the Journal. Subscription rates: The Journal is free to members of the Russell Society. Subsc ription rates for two issues tiS. Enquiries should be made to the Journal Manager at the above address. Back copies of the Journal may also be ordered through the Journal Ma nager. Advertising: Details of advertising rates may be obtained from the Journal Manager. Published by The Russell Society. Registered charity No. 803308. Copyright The Russell Society 1993 . ISSN 0263 7839 FRONT COVER: Strontianite, Strontian mines, Highland Region, Scotland. 100 mm x 55 mm.