DOCSLIB.ORG

L. Jahnsite, Segelerite, and Robertsite, Three New Transition Metal Phosphate Species Ll. Redefinition of Overite, an Lsotype Of

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
L. Jahnsite, Segelerite, and Robertsite, Three New Transition Metal Phosphate Species Ll. Redefinition of Overite, an Lsotype Of American Mineralogist, Volume 59, pages 48-59, 1974 l. Jahnsite,Segelerite, and Robertsite,Three New TransitionMetal PhosphateSpecies ll. Redefinitionof Overite,an lsotypeof Segelerite Pnur BnnN Moone Thc Departmcntof the GeophysicalSciences, The Uniuersityof Chicago, Chicago,Illinois 60637 ilt. lsotypyof Robertsite,Mitridatite, and Arseniosiderite Peur BmaN Moonp With Two Chemical Analvsesbv JUN Iro Deryrtrnent of GeologicalSciences, Haraard Uniuersity, Cambridge, Massrchusetts 02 I 38 Abstract Three new species,-jahnsite, segelerite, and robertsite,-occur in moderate abundance as late stage products in corroded triphylite-heterosite-ferrisicklerite-rockbridgeite masses, associated with leucophosphite,hureaulite, collinsite, laueite, etc.Type specimensare from the Tip Top pegmatite, near Custer, South Dakota. Jahnsite, caMn2+Mgr(Hro)aFe3+z(oH)rlPC)oln,a 14.94(2),b 7.14(l), c 9.93(1)A, p 110.16(8)", P2/a, Z : 2, specific gavity 2.71, biaxial (-), 2V large, e 1.640,p 1.658,t l.6lo, occurs abundantly as striated short to long prismatic crystals, nut brown, yellow, yellow-orange to greenish-yellowin color.Formsarec{001},a{100},il2oll, jl2}ll,ft[iol],/tolll,nt110],andz{itt}. Segeierite,CaMg(HrO)rFes+(OH)[POdz, a 14.826{5),b 18.751(4),c7.30(1)A, Pcca, Z : 8, specific gaavity2.67, biaxial (-), 2Ylarge,a 1.618,p 1.6t5, z 1.650,occurs sparingly as striated yellow'green prismaticcrystals, with c[00], r{010}, nlll0l and qll2l } with perfect {010} cleavage'It is the Feg+-analogueofoverite; a restudy on type overite revealsthe spacegroup Pcca and the ideal formula CaMg(HrO)dl(OH)[POr]r. Robertsite,carMna+r(oH)o(Hro){Ponlr, a 17.36,b lg.53,c 11.30A,p 96.0o,A2/a, Z: 8, specific gravity3.l,T,cleavage[l00] good,biaxial(-) a1.775,8 *t - 1.82,2V-8o,pleochroismextreme (Y, Z = deep reddish brown; 17 : pale reddish-pink), @curs as fibrous massesand small wedge- shapedcrystals showing c[001 f , a{1@}, qt031}. It is tabular paraltelto {100}. The color is shiny black, blood-red in thin splinters, streak chocolate brown. Mitridatite, carFes+n(oH)o(Hro)glPodr, a 17.52(2),b lg.1r4), c 11.25(2)4, p 95055" A2/a, Z :8, specificgraity 3.24,a1.785,F o t : 1.85,2V 5-10o,pleochroismextreme (Y' Z - deep greenish-browl, X : pale greenishyellow), shows a{100},^c{001} arrd ul423l. Arseniosiderite, carFes+(OH)o(Hp)glAsOrlr has a 17.76,b 19.53,c 11.30A, p 96.00based on the powder data. These speciesare isotypes of the robertsite structure. Introduction oped crystals. It is approPriate,for this reason, to commencewith a detailed description of the para- Rarely doesan investigatorin descriptivemineral- genesisof these minerals since their compositions ogy have an opportunity to announcethree species leave little doubt that their formation was due to the new to scientific intelligence which not only occur presenceof Caz', Fe3*,Mn2', Mnt*, Mg'*, [POn]t-, intimately associatedbut also appear as well-devel- and (OH)- ions in solution at low temperature. 48 THREE NEW TRANSITION METAL PHOSPHATES Following this paragenetic discussion, the crystal a. The aquated oxidaion products of triphylite- chemistry of each speciesshall be discussedsepa- lithiophilite rately. The secondaryphosphate paragenesis of the Tip The type specimensoriginate from the Tip Top Top pegmatiteappears to fall into two closelyrelated pegmatite,near the village of Custer, in Custer but distinct categories:the products of direct solu- County, South Dakota, although other localities tion, oxidation, and recrystallizationof the parent have alsocome to light and one species(robertsite) triphylite-lithiophilite and the products involving the has a Fes*-analogue(mitridatite) so widespreadin addition of Ca2*and Mg2*cations. We haveexamined its occurrenceto suggestthat the phaseshould elicit by electron microprobe analysis remnant primary considerableinterest in its crystal chemistry.The triphylite occurring in the interior of the zone of oxi- Tip Top pegmatite(NE 7a, SW 7+, sec. 8, T.4S, dation and aquation and have obtainedthe composi- R.4E) is one of severalin the regionof the central tion Li(Fee7sMns.22Mg.o.ro)[POn].Since the late Black Hills where a great abundanceof triphylite- stageCa-Mg rich phosphatesoccur locally but occa- lithiophilite appeared as an accesorycore mineral sionally in sufficientabundance, it is difficult to imag- arrd was exposedduring the course of mining activ- ine a contribution of the Ca2*and Mg2- cationsfrom ity. These crude giant crystals of triphylite suffered the parent phosphates;it is proposedthat thesecat- extensiveretrograde oxidative and metasomaticre- ions were introduced at alate stagefrom a separate actions which resulted in the ferrisicklerite-sicklerite source and were added to the pool of cations pro- seriesLi1-,Fe3*,(Fe2*,Mn'-)r.-r[POa]; the heterosite- vided by the the parent phosphates. purpurite series (Fe3*,Mn3*)tPOn];and the rock- The oxidation and aquation of triphylite leads bridgeite-frondelite series (Fe,Mn),-Fe'.r(OH)s directly to the formation of rockbridgeite or ferri- [POrle.Vuggy cavitiesin thesephases contain a host sicklerite, where ferrisicklerite may in turn be oxi- of late stage hydrated transition metal phosphates. dized further to heterositeor aquatedto,form rock- Since casual inspection of such associationscan be bridgeite. These phasesare observed as among the unreliablein identificationof species,great care was most persistent products of oxidation-aquation of taken in this study to examineall distinct phasesby triphylites in granitic pegmatites throughout the X-ray single crystal and powder diffraction tech- world. Since the isoelectronicpoint of Fe3* cation niquesand, whenevernecessary, to establishidentity occurs at lower pH valuesand earlier than Mn2* and by comparison with descriptionsof type materials. the Fe2' remaining, leucophosphite crystallizes at Phasesdiscovered in thesecavities include leucophos- low temperatureswhere water ligands are stable. phite, KFe3.2(OH)(HzO)[POa]z.HzO, as lovely The solution becomesprogressively enriched in Mnz*, greenish-grey,purplish-pink to deep amethystine which crystallizes later in hureaulite. At the final prismatic crystals; hureaulite, (Mn,Fe),-s(HzO)n stages,laueite and mitridatite appear.Here, oxidation [PO3(OH)]2[PO+]2,as pale yellow, to pale pink to may produce Mn3*, so that bermanite forms. With red-brown prismatic crystals; collinsite, Ca2(Mg, the depletionof todorokite, ca Mn.s (O, Fe") (H2O)s[POe]2,as colorlessto white radiating [POa]'-, OH)16.2H2O, crystallizes.Thus, the sequencetri- sprays,lath-like crystals,and flattened chisel- phylite-ferrisicklerite- rockbridgeite- leucophosphite, shaped rosettes;hydroxylapatite, Cad(OH)[PO+]s, hureaulite * laueite-mitridatite-bermanite-todorokite as rounded colorlesshexagonal prisms; whitlockite, appearsrepeatedly at the Tip Top, White Elephant ca Ca6Mg[PO+]e,as colorlesssimple rhombohedra; and Linwood pegmatitesin the Black Hills; at Ha- bermanite,Mn2'Mns-2(OH)r(HrO)n[POn]e, as deep gendorfStid, Bavaria; at PalermoNo. 1, New Hamp- reddish-browndruses of thin tabular crystals;laueite, shire; and at the Sapucaiapegmatite, Brazil. Mn2-Fe3.2(OH)z(HzO)o[POl]z.2HzO,as striated orange laths; mitridatite, Ca3Fes-a(OH)u(HrO), b. The addilion ol Cazrand Mg* [POn]n,as thin brittle greenish-brownplates and dull olive-greenstains; and the new speciesjahnsite, Collinsite, hydroxylapatite, whitlockite, and the CaMn'.Mp ( HzO) eFe3.z( OH ) 2[PO4]4; segelerite, Ca three new speciesare not rare at the Tip Top peg- Mg(H2O)aFe3.(OH)[POe]zi and robertsite, Cas matite. In addition, they have been observedfrom Mn3"a(OH)6(HrO)s[PO4]r.For a generalreview of the White Elephant pegmatite,having formed under the myriad pegmatite phosphates,the reader is re- similar conditions. Mitridatite is a particularly per- ferredto Moore (1973). sistent phase at all stagesof late crystallizationand 50 PAUL B, MOORE occurswidely as stainscoating the silicatessuffound- quently occur as parallel aggregates,twinned by ing triphylite crystals at practically every pegmatite reflectionon c[001]. Large crystalsmay be up to where triphylite occurs, suggestingthat mitridatite 5 mm in length, though 0.1 to 0.5 mm are most is an important low temperature phase. Paragenti- typical.The forms includec{001f , c{100f, t{2011, cally, the Ca2*-and Mg'Lbearing minerals occur at jlz}rl, k{iol}, /{0lrl, m{llof and nIill] with the sequencewhere leucophosphiteand hureaulite striaeon jlz0ll and all00l. A typical development crystallized. Robertsite appears in several genera- is presentedin Figure l. tions: as shiny black botryoidal aggregatescoating Analysis of the reticular density (based on the the cavity walls upon which are implanted jahnsite X-ray cell) reveals that the form frequenciesap- and collinsite, and as reddish platy rosettes im- proximately follow the order of descendinginter- planted upon theseminerals. In severalspecimens, it planar spacings(Table la). The form blOlOf is occurs as the sole mineral with stubby shiny black consistently absent; examination of single crystal wedge-shapedcrystals lining the cavitiesin the same. data revealsthat this plane is of zero intensity.Table Collinsite, hydroxylapatite, and whitlockite usually la suggeststhat some crystals of jahnsite should appear as the last minerals to crystallize,encrusting reveal l2llf and {lll}, but none of the crystals the rather abundant jahnsite. The author suggests submitted to morphological examination presented that the Fe3* remaining in solution crystallized as thesefacets. jahnsite pure Ca-Mg phosphates with the essentially
Load more

Recommended publications
  • Alteration of Spodumene, Montebrasite and Lithiophilite In
    American Mineralogist, Volume 67, pages 97-113, 1982 Alteration of spodumene,montebrasite and lithiophilite in pegmatites of the White PicachoDistrict, Arizona Davrp Lor.rooxrnNo DoNer-uM. Bunr Department of Geology Arizona State University Tempe, Arizona 85281 Abstract The crystallization sequence and metasomatic alteration of spodumene (LiAlSizOe), montebrasite(LiAIPO4(OH,F)), and lithiophilite (Li(Mn,Fe)PO+)are describedfor nine zoned lithium pegmatitesin the White Picacho district, Arizona. The observedcrystalliza- tion trends suggesta progressiveincrease in the activities of lithium species(spodumene follows microcline as the principal alkali aluminosilicate), as well as an increase in the activities of the acidic volatiles phosphorus and fluorine (montebrasite succeedsspodu- mene as the stableprimary lithium phase).Much of the lithiophilite occurs with columbite, apatite, beryl, zircon, and tourmaline in cleavelanditecomplexes that formed in part at the expenseof quartz-spodumenepegmatite. Fracture-controlledpseudomorphic alteration of the primary lithium minerals is widespread and apparently is the result of subsolidus reactionswith residualpegmatitic fluids. Spodumenehas been replacedby eucryptite, albite, and micas. Alteration products of montebrasite include low-fluorine secondary montebrasite,crandallite (tentative), hydroxylapatite, muscovite, brazilianite, augelite (tentative),scorzalite, kulanite, wyllieite, and carbonate-apatite.Secondary phases identi- fied in altered lithiophilite include hureaulite, triploidite, eosphorite,
    [Show full text]
  • Geology of the Hugo Pegmatite Keystone, South Dakota
    Geology of the Hugo Pegmatite Keystone, South Dakota GEOLOGICAL SURVEY PROFESSIONAL PAPER 297-B Geology of the Hugo Pegmatite Keystone, South Dakota By J. J. NORTON, L. R. PAGE, and D. A. BROBST PEGMATITES AND OTHER PRECAMBRIAN ROCKS IN THE SOUTHERN BLACK HILLS GEOLOGICAL SURVEY PROFESSIONAL PAPER 297-P A detailed structural and petrologic study of a pegmatite containing seven zones and two replacement bodies UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1962 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director For sale by the Superintendent of Documents, U.S. Government Printing Office Washington 25, D.C. CONTENTS Page Page Abstract.. _ ________________________________________ 49 Mineral distribution and paragenesis of the entire Introduction. ______________________________________ 49 pegmatite_ _ ______________________-___---------_ 96 General geology. ___________________________________ 52 Comparison of the zonal sequence with that in other Metamorphic rocks_ ____________________________ 52 pegmatites. ______________________________________ 97 Roy and Monte Carlo pegmatites.- _ __---__-______ 53 Replacement features-______________________________ 100 Structure __________________________________________ 53 Review of the evidence for replacement in pegma­ Pegmatite units ____________________________________ 53 tites __ _____________________________________ 100 Zone 1 : Albite-quartz-musco vite pegmatite ________ 56 Replacement in the Hugo pegmatite.____-_____-_- 102
    [Show full text]
  • University of Oklahoma Graduate College
    UNIVERSITY OF OKLAHOMA GRADUATE COLLEGE EVOLUTION OF THE HYDROTHERMAL STAGE WITHIN MIAROLITIC CAVITIES IN GRANITIC PEGMATITES OF CALIFORNIA AND MAINE, USA A THESIS SUBMITTED TO THE GRADUATE FACULTY in partial fulfillment of the requirements for the Degree of MASTER OF SCIENCE By CHARLES LORIN DUVAL Norman, Oklahoma 2019 EVOLUTION OF THE HYDROTHERMAL STAGE WITHIN MIAROLITIC CAVITIES IN GRANITIC PEGMATITES OF CALIFORNIA AND MAINE, USA A THESIS APPROVED FOR THE SCHOOL OF GEOSCIENCES BY Dr. David London, Chair Dr. Andrew S. Elwood Madden Dr. Megan E. Elwood Madden © Copyright by CHARLES LORIN DUVAL 2019 All Rights Reserved. Table of Contents Abstract………………………………………………………………..……………………….. vi 1. INTRODUCTION/PROBLEM STATEMENT…………………………………………... 1 2. OBJECTIVES…………………………………………………………………………..…... 2 3. BACKGROUND……………………………………………………………………………. 2 3.1 Minerals present within miarolitic cavities….…………………………………………… 2 3.2 Prior studies……………………………………………………………………………... 5 4. CLAY SAMPLE LOCATIONS……………….…………………………………………. 10 4.1 California………………………………………………………………………………. 10 4.2 Maine…………………………………………………………………………………… 11 5. ALKALI FELDSPAR SAMPLE LOCATIONS………………………………………… 11 6. METHODOLOGY………………………………………………………………………... 11 6.1 X-ray diffraction analysis of clay minerals……………………………………………... 12 6.2 Electron microprobe analysis of clay minerals…………………………………………. 12 6.3 X-ray diffraction analysis of alkali feldspars…………………………………………… 13 7. RESULTS………………………………………………………………………………….. 13 7.1 XRD of pocket clay samples…………………………………………………………….. 13 7.2 EDXA of pocket clay samples……………………………………………………………
    [Show full text]
  • 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
    [Show full text]
  • List of New Mineral Names: with an Index of Authors
    415 A (fifth) list of new mineral names: with an index of authors. 1 By L. J. S~v.scs~, M.A., F.G.S. Assistant in the ~Iineral Department of the,Brltish Museum. [Communicated June 7, 1910.] Aglaurito. R. Handmann, 1907. Zeita. Min. Geol. Stuttgart, col. i, p. 78. Orthoc]ase-felspar with a fine blue reflection forming a constituent of quartz-porphyry (Aglauritporphyr) from Teplitz, Bohemia. Named from ~,Xavpo~ ---- ~Xa&, bright. Alaito. K. A. ~Yenadkevi~, 1909. BuU. Acad. Sci. Saint-P6tersbourg, ser. 6, col. iii, p. 185 (A~am~s). Hydrate~l vanadic oxide, V205. H~O, forming blood=red, mossy growths with silky lustre. Founi] with turanite (q. v.) in thct neighbourhood of the Alai Mountains, Russian Central Asia. Alamosite. C. Palaehe and H. E. Merwin, 1909. Amer. Journ. Sci., ser. 4, col. xxvii, p. 899; Zeits. Kryst. Min., col. xlvi, p. 518. Lead recta-silicate, PbSiOs, occurring as snow-white, radially fibrous masses. Crystals are monoclinic, though apparently not isom0rphous with wol]astonite. From Alamos, Sonora, Mexico. Prepared artificially by S. Hilpert and P. Weiller, Ber. Deutsch. Chem. Ges., 1909, col. xlii, p. 2969. Aloisiite. L. Colomba, 1908. Rend. B. Accad. Lincei, Roma, set. 5, col. xvii, sere. 2, p. 233. A hydrated sub-silicate of calcium, ferrous iron, magnesium, sodium, and hydrogen, (R pp, R',), SiO,, occurring in an amorphous condition, intimately mixed with oalcinm carbonate, in a palagonite-tuff at Fort Portal, Uganda. Named in honour of H.R.H. Prince Luigi Amedeo of Savoy, Duke of Abruzzi. Aloisius or Aloysius is a Latin form of Luigi or I~ewis.
    [Show full text]
  • Alphab Etical Index
    ALPHAB ETICAL INDEX Names of authors are printed in SMALLCAPITALS, subjects in lower-case roman, and localities in italics; book reviews are placed at the end. ABDUL-SAMAD, F. A., THOMAS, J. H., WILLIAMS, P. A., BLASI, A., tetrahedral A1 in alkali feldspar, 465 and SYMES, R. F., lanarkite, 499 BORTNIKOV, N. S., see BRESKOVSKA, V. V., 357 AEGEAN SEA, Santorini I., iron oxide mineralogy, 89 Boulangerite, 360 Aegirine, Scotland, in trachyte, 399 BRAITHWAITE, R. S. W., and COOPER, B. V., childrenite, /~kKERBLOM, G. V., see WILSON, M. R., 233 119 ALDERTON, D. H. M., see RANKIN, A. H., 179 Braunite, mineralogy and genesis, 506 Allanite, Scotland, 445 BRESKOVSKA, V. V., MOZGOVA, N. N., BORTNIKOV, N. S., Aluminosilicate-sodalites, X-ray study, 459 GORSHKOV, A. I., and TSEPIN, A. I., ardaite, 357 Amphibole, microstructures and phase transformations, BROOKS, R. R., see WATTERS, W. A., 510 395; Greenland, 283 BULGARIA, Madjarovo deposit, ardaite, 357 Andradite, in banded iron-formation assemblage, 127 ANGUS, N. S., AND KANARIS-SOTIRIOU, R., autometa- Calcite, atomic arrangement on twin boundaries, 265 somatic gneisses, 411 CANADA, SASKATCHEWAN, uranium occurrences in Cree Anthophyllite, asbestiform, morphology and alteration, Lake Zone, 163 77 CANTERFORD, J. H., see HILL, R. J., 453 Aragonite, atomic arrangements on twin boundaries, Carbonatite, evolution and nomenclature, 13 265 CARPENTER, M. A., amphibole microstructures, 395 Ardaite, Bulgaria, new mineral, 357 Cassiterite, SW England, U content, 211 Arfvedsonite, Scotland, in trachyte, 399 Cebollite, in kimberlite, correction, 274 ARVlN, M., pumpellyite in basic igneous rocks, 427 CHANNEL ISLANDS, Guernsey, meladiorite layers, 301; ASCENSION ISLAND, RE-rich eudialyte, 421 Jersey, wollastonite and epistilbite, 504; mineralization A TKINS, F.
    [Show full text]
  • Scandiobabingtonite, a New Mineral from the Baveno Pegmatite
    American Mineralogist, Volume 83, pages 1330-1334, 1998 Scandiobabingtonite,a new mineral from the Bavenopegmatite, Piedmont, Italy Ploro ORl.tNnIrr'* Ma,nco PasERorr and GrovlNNa Vn,zzllrNr2 rDipartimento di Scienzedella Terra, Universitd di Pisa, Via S. Maria 53,1-56126 Pisa, Italy '?Dipartimento di Scienzedella Terra, Universitd di Modena, Via S Eufemia 19, I-41 100 Modena, Italy Ansrntcr Scandiobabingtonite,ideally Ca,(Fe,*,Mn)ScSi,O,o(OH) is the scandium analogue of babingtonite; it was found in a pegmatitic cavity of the Baveno granite associatedwith orthoclase, albite, muscovite, stilbite, and fluorite. Its optics are biaxial (+) with 2V : : ^v: 64(2)",ct 1.686(2),P: 1.694(3), 1.709(2).D-"." : 3.24(5)slcm3, D.",.:3.24 sl cm3, and Z : 2. Scandiobabingtoniteis colorless or pale gray-green, transparent,with vitreous luster. It occurs as submillimeter sized, short, tabular crystals, slightly elongated on [001],and characterizedby the associationof forms {010}, {001}, {110}, {110}, and {101}. It occurs also as a thin rim encrustingsmall crystals of babingtonite.The strongest lines in the X-ray powder pauern are at2.969 (S), 2.895 (S), 3.14 (mS), and 2.755 (mS) 4. fn" mineralis triclinic, ipu.. g.oup PT, with a : 7.536(2),b : 1L734(2),c : 6.t48(Z) A, : 91.10(2), : 93.86(2), : lO+.S:(2)'. Scandiobabingtoniteis isostructural " B r with babingtonite, with Sc replacing Fe3* in sixfold coordination, but no substitution of Fer* by Sc takes place. Due to the lack of a suitably large crystal of the new species, such a replacementhas been confirmed by refining the crystal structure of a Sc-rich babingtonite (final R : O.O47)using single-crystal X-ray diffraction (XRD) data.
    [Show full text]
  • NEW MINERALS It Is Proposed Hereafter to Indicate In.A General Way the Classification of All New Minerals Recoided in This Department
    JOURNAL MINERALOGICAL SOCIETY OF AMENICA 63 Dr. Kunz then spoke of the various city localities and the minerals found therein. He stated that the East Side, from 37 to 110 St., probably afforded the most specimens. The various tunnels and their minerals were spoken of. Capt. Miller called attention to the fine collection of Brooklyn Drift Minerals and Rocks in the collection of the Long Island Historical Society. Ife abo mentioned the occurrence of monazite and xenotime crystals, on the Speedway,Harlem River. Dr. Kunz emphasizedthe irnportance of complete records being kept of all finds. Tnou,q,s L Mrr,r,nn, SecretaryPro, Tem. NEW MINERALS It is proposed hereafter to indicate in.a general way the classification of all new minerals recoided in this department. Subdivision will be first into "families," of which nine may be recognized,as listed in the January number (Am. Min.6 (1), 12,1921). Eachfamilywillbe separatedinto "subfamilies " based on special features of composition. This arrangement is tentative and open to modification, and criticism of it will be welcome, [Eo.] FAMILY 2. SULFIDES, ETC. SosreMrr,v 3. Doust,u suLFrDEs oF METALSAND sEMr-METAr,s. I'LTRABASITE V. Rosrcxf and J. Srnnse-Btinu. Ultrabasit, ein neues Mineral aus Freiberg in Sachsen. (Ultrabasite, a new mineral from Freiberg, Saxony). Rozpr.Eeslcd Ako,il. Prag,25, No. 45, 1916;Z. Krgst. Min., 55,43H39, 1920, Neun: From its extremely basic chemical composition. Pnrsrcar, Pnopnnrrus Color black, somewhat grayish; luster metallic; streak black; cleavage none; fracture scaly, with somewhat greasy luster on the surface. H. : 5; sp. gr.
    [Show full text]
  • Raman and Infrared Spectroscopy of Arsenates of the Roselite and Fairfeldite Mineral Subgroups
    This may be the author’s version of a work that was submitted/accepted for publication in the following source: Frost, Ray (2009) Raman and infrared spectroscopy of arsenates of the roselite and fair- feldite mineral subgroups. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 71(5), pp. 1788-1794. This file was downloaded from: https://eprints.qut.edu.au/17596/ c Copyright 2009 Elsevier Reproduced in accordance with the copyright policy of the publisher. Notice: Please note that this document may not be the Version of Record (i.e. published version) of the work. Author manuscript versions (as Sub- mitted for peer review or as Accepted for publication after peer review) can be identified by an absence of publisher branding and/or typeset appear- ance. If there is any doubt, please refer to the published source. https://doi.org/10.1016/j.saa.2008.06.039 QUT Digital Repository: http://eprints.qut.edu.au/ Frost, Ray L. (2009) Raman and infrared spectroscopy of arsenates of the roselite and fairfieldite mineral subgroups. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 71(5). pp. 1788-1794. © Copyright 2009 Elsevier Raman and infrared spectroscopy of arsenates of the roselite and fairfieldite mineral subgroups Ray L. Frost• Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane Queensland 4001, Australia. Abstract Raman spectroscopy complimented with infrared spectroscopy has been used to determine the molecular structure of the roselite arsenate minerals of the roselite and 2+ fairfieldite subgroups of formula Ca2B(AsO4)2.2H2O (where B may be Co, Fe , Mg, 2- Mn, Ni, Zn).
    [Show full text]
  • New Mineral Names*,†
    American Mineralogist, Volume 106, pages 1360–1364, 2021 New Mineral Names*,† Dmitriy I. Belakovskiy1, and Yulia Uvarova2 1Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18 korp. 2, Moscow 119071, Russia 2CSIRO Mineral Resources, ARRC, 26 Dick Perry Avenue, Kensington, Western Australia 6151, Australia In this issue This New Mineral Names has entries for 11 new species, including 7 minerals of jahnsite group: jahnsite- (NaMnMg), jahnsite-(NaMnMn), jahnsite-(CaMnZn), jahnsite-(MnMnFe), jahnsite-(MnMnMg), jahnsite- (MnMnZn), and whiteite-(MnMnMg); lasnierite, manganflurlite (with a new data for flurlite), tewite, and wumuite. Lasnierite* the LA-ICP-MS analysis, but their concentrations were below detec- B. Rondeau, B. Devouard, D. Jacob, P. Roussel, N. Stephant, C. Boulet, tion limits. The empirical formula is (Ca0.59Sr0.37)Ʃ0.96(Mg1.42Fe0.54)Ʃ1.96 V. Mollé, M. Corre, E. Fritsch, C. Ferraris, and G.C. Parodi (2019) Al0.87(P2.99Si0.01)Ʃ3.00(O11.41F0.59)Ʃ12 based on 12 (O+F) pfu. The strongest lines of the calculated powder X-ray diffraction pattern are [dcalc Å (I%calc; Lasnierite, (Ca,Sr)(Mg,Fe)2Al(PO4)3, a new phosphate accompany- ing lazulite from Mt. Ibity, Madagascar: an example of structural hkl)]: 4.421 (83; 040), 3.802 (63, 131), 3.706 (100; 022), 3.305 (99; 141), characterization from dynamic refinement of precession electron 2.890 (90; 211), 2.781 (69; 221), 2.772 (67; 061), 2.601 (97; 023). It diffraction data on submicrometer sample. European Journal of was not possible to perform powder nor single-crystal X-ray diffraction Mineralogy, 31(2), 379–388.
    [Show full text]
  • On the Symmetry of Tsumcorite Group Minerals Based on the New Species Rappoldite and Zincgartrellite
    Mineralogical Magazine, December 2000, Vol. 64(6), pp. 1109-1126 On the symmetry of tsumcorite group minerals based on the new species rappoldite and zincgartrellite H. EFFENBERGERI,*, W. KRAUSE2, H.-J. BERNHARDT3 AND M. MARTIN4 I Institut fUr Mineralogie und Kristallographie, Universitat Wien, Althanstra~e 14, A-I090 Vienna, Austria 2 Henriette-Lott-Weg 8, 0-50354 Hiirth, Gennany 3 Ruhr-Universitat Bochum, Institut fUr Mineralogie, Universitatsstraf.le 150, 0-44780 Bochum, Germany 4 Heinrich-Zille-Weg 8, 0-09599 Freiberg, Germany ABSTRACT Rappoldite, the Co-analogue of helmutwinklerite, and zincgartrellite, the Zn-dominant analogue of gartrellite, are two new members of the tsumcorite group. Both minerals are triclinic, their structures are closely related to the parent structure, i.e. the 'tsumcorite type' (C2/m, Z = 2). The lower symmetry is caused by two different crysta,l-ch~mical requirements. Order :Bhenomen~+ o.f the hydrogen bonds cause the 'helmutwmklente type (PI, Z = 4), ordenng of Cu and Fe' IS responsible for the 'gartrellite type' (PI, Z = I). Rappoldite was found on samples from the Rappold mine near Schneeberg, Saxony, Gennany. The new species fonns red to red-brown prismatic and tabular crystals up to I mm long. Deale. = 5.28 g/cm3. 2Vz = 85(5r, nx = 1.85 (calc.), ny = 1.87(2) and nz = 1.90(2); dispersion is distinct with r > v; orientation is Y -II [120] and X - c. The empirical fonnula derived from electron microprobe analyses II is (Pb 1.01Cao.ol h: 1.02(COO99Nio 62ZnO.35FeO.02h:1.9S[(As04)199(S04)001h:2.00[(OH)0.02(H20) I 98h:2.00 or Pb(Co,Nih(As04h.2H20.
    [Show full text]
  • Topographical Index
    997 TOPOGRAPHICAL INDEX EUROPE Penberthy Croft, St. Hilary: carminite, beudantite, 431 Iceland (fsland) Pengenna (Trewethen) mine, St. Kew: Bondolfur, East Iceland: pitchsbone, beudantite, carminite, mimetite, sco- oligoclase, 587 rodite, 432 Sellatur, East Iceland: pitchs~one, anor- Redruth: danalite, 921 thoclase, 587 Roscommon Cliff, St. Just-in-Peuwith: Skruthur, East Iceland: pitchstonc, stokesite, 433 anorthoclase, 587 St. Day: cornubite, 1 Thingmuli, East Iceland: andesine, 587 Treburland mine, Altarnun: genthelvite, molybdenite, 921 Faroes (F~eroerne) Treore mine, St. Teath: beudantite, carminite, jamesonite, mimetite, sco- Erionite, chabazite, 343 rodite, stibnite, 431 Tretoil mine, Lanivet: danalite, garnet, Norway (Norge) ilvaite, 921 Gryting, Risor: fergusonite (var. risSrite), Wheal Betsy, Tremore, Lanivet: he]vine, 392 scheelite, 921 Helle, Arendal: fergusonite, 392 Wheal Carpenter, Gwinear: beudantite, Nedends: fergusonite, 392 bayldonite, carminite, 431 ; cornubite, Rullandsdalen, Risor: fergusonite, 392 cornwallite, 1 Wheal Clinton, Mylor, Falmouth: danal- British Isles ire, 921 Wheal Cock, St. Just-in- Penwith : apatite, E~GLA~D i~D WALES bertrandite, herderite, helvine, phena- Adamite, hiibnerite, xliv kite, scheelite, 921 Billingham anhydrite mine, Durham: Wheal Ding (part of Bodmin Wheal aph~hitalite(?), arsenopyrite(?), ep- Mary): blende, he]vine, scheelite, 921 somite, ferric sulphate(?), gypsum, Wheal Gorland, Gwennap: cornubite, l; halite, ilsemannite(?), lepidocrocite, beudantite, carminite, zeunerite, 430 molybdenite(?),
    [Show full text]