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Ajoite: New Data
American Mineralogist, Volume 66, pages 201-203, 1981 Ajoite: new data GEORGE Y. CHAO Department of Geology, Carleton University Ottawa, Ontario Kl S 5B6, Canada Abstract New data show that ajoite is triclinic, PI or pI, a ==13.637, b ==14.507, c ==13.620A, a == 107.16, f3 = 105.45, y = 110.57°; Z ==3. The mineral is biaxial positive, 2V ==80°, a ==1.550, f3 = 1.583, y = 1.641 (in Na light); pleochroic: X = very light bluish green, Y -- Z ==brilliant bluish green. {010} cleavage is perfect. The orientation of the principal vibration directions is defined by the spherical coordinates X(26.5°, 80°), Y(118°, 79°), Z(-104.5°, 15°). The ex- tinction angle c: Z' on (0 I0) is 150. Electron microprobe and chemical analyses gave Si02 41.2, Al203 3.81, CuO 42.2, MnO 0.02, FeO 0.11, CaO 0.04, Na20 0.84, K20 2.50, H20 (TGA to 1000°C) 8.35, sum 99.07 wt.%. The analysis corresponds to (Ko.70NaO.36Cao.Ol)(CUt,.97 Feo.o2)Alo.98Si9.oo024(OH)6'3.09H20 or ideally, (K,Na)Cu7AISi9024(OH)6' 3H20. TGA showed a two-stage dehydration; 50% of the total water was released between 70° and 425°C and the rest between 4250 and 800°C. Half of the water is zeolitic in nature. Introduction are always present. The termination on c may be ei- Ajoite, first described by Schaller and Vlisidis ther {001} or {203} or both. (1958) from Ajo, Pima County, Arizona, was thought to be monoclinic on the basis of optical studies. -
Wickenburgite Pb3caal2si10o27² 3H2O
Wickenburgite Pb3CaAl2Si10O27 ² 3H2O c 2001 Mineral Data Publishing, version 1.2 ° Crystal Data: Hexagonal. Point Group: 6=m 2=m 2=m: Tabular holohedral crystals, dominated by 0001 and 1011 , to 1.5 mm. As spongy aggregates of small, highly perfect f g f g individuals; as subparallel aggregates or rosettes; granular. Physical Properties: Cleavage: 0001 , indistinct. Tenacity: Brittle but tough. Hardness = 5 D(meas.) = 3.85 D(cfalc.) g= 3.88 Fluoresces dull orange under SW UV. Optical Properties: Transparent to translucent. Color: Colorless to white; rarely salmon-pink. Luster: Vitreous. Optical Class: Uniaxial ({). Dispersion: r < v; moderate. ! = 1.692 ² = 1.648 Cell Data: Space Group: P 63=mmc: a = 8.53 c = 20.16 Z = 2 X-ray Powder Pattern: Near Wickenburg, Arizona, USA. 10.1 (100), 3.26 (80), 3.93 (60), 3.36 (40), 2.639 (40), 5.96 (30), 5.04 (30) Chemistry: (1) (2) SiO2 42.1 40.53 Al2O3 7.6 6.88 PbO 44.0 45.17 CaO 3.80 3.78 H2O 3.77 3.64 Total 101.27 100.00 (1) Near Wickenburg, Arizona, USA. (2) Pb3CaAl2Si10O24(OH)6: [needsnew??formula] Occurrence: In oxidized hydrothermal veins, carrying galena and sphalerite, in quartz and °uorite gangue (near Wickenburg, Arizona, USA). Association: Phoenicochroite, mimetite, cerussite, willemite, crocoite, duftite, hemihedrite, alamosite, melanotekite, luddenite, ajoite, shattuckite, vauquelinite, descloizite, laumontite. Distribution: In the USA, in Arizona, at several localities south of Wickenburg, Maricopa Co., including the Potter-Cramer property, Belmont Mountains, and the Moon Anchor mine; on dumps at a Pb-Ag-Cu prospect in the Artillery Peaks area, Mohave Co.; and in the Dives (Padre Kino) mine, Silver district, La Paz Co. -
About Our Mineral World
About Our Mineral World Compiled from series of Articles titled "TRIVIAL PURSUITS" from News Nuggets by Paul F. Hlava "The study of the natural sciences ought to expand the mind and enlarge the ability to grasp intellectual problems." Source?? "Mineral collecting can lead the interested and inquisitive person into the broader fields of geology and chemistry. This progression should be the proper outcome. Collecting for its own sake adds nothing to a person's understanding of the world about him. Learning to recognize minerals is only a beginning. The real satisfaction in mineralogy is in gaining knowledge of the ways in which minerals are formed in the earth, of the chemistry of the minerals and of the ways atoms are packed together to form crystals. Only by grouping minerals into definite categories is is possible to study, describe, and discuss them in a systematic and intelligent manner." Rock and Minerals, 1869, p. 260. Table of Contents: AGATE, JASPER, CHERT AND .............................................................................................................................2 GARNETS..................................................................................................................................................................2 GOLD.........................................................................................................................................................................3 "The Mystery of the Magnetic Dinosaur Bones" .......................................................................................................4 -
New Minerals Approved Bythe Ima Commission on New
NEW MINERALS APPROVED BY THE IMA COMMISSION ON NEW MINERALS AND MINERAL NAMES ALLABOGDANITE, (Fe,Ni)l Allabogdanite, a mineral dimorphous with barringerite, was discovered in the Onello iron meteorite (Ni-rich ataxite) found in 1997 in the alluvium of the Bol'shoy Dolguchan River, a tributary of the Onello River, Aldan River basin, South Yakutia (Republic of Sakha- Yakutia), Russia. The mineral occurs as light straw-yellow, with strong metallic luster, lamellar crystals up to 0.0 I x 0.1 x 0.4 rnrn, typically twinned, in plessite. Associated minerals are nickel phosphide, schreibersite, awaruite and graphite (Britvin e.a., 2002b). Name: in honour of Alia Nikolaevna BOG DAN OVA (1947-2004), Russian crys- tallographer, for her contribution to the study of new minerals; Geological Institute of Kola Science Center of Russian Academy of Sciences, Apatity. fMA No.: 2000-038. TS: PU 1/18632. ALLOCHALCOSELITE, Cu+Cu~+PbOZ(Se03)P5 Allochalcoselite was found in the fumarole products of the Second cinder cone, Northern Breakthrought of the Tolbachik Main Fracture Eruption (1975-1976), Tolbachik Volcano, Kamchatka, Russia. It occurs as transparent dark brown pris- matic crystals up to 0.1 mm long. Associated minerals are cotunnite, sofiite, ilin- skite, georgbokiite and burn site (Vergasova e.a., 2005). Name: for the chemical composition: presence of selenium and different oxidation states of copper, from the Greek aA.Ao~(different) and xaAxo~ (copper). fMA No.: 2004-025. TS: no reliable information. ALSAKHAROVITE-Zn, NaSrKZn(Ti,Nb)JSi401ZJz(0,OH)4·7HzO photo 1 Labuntsovite group Alsakharovite-Zn was discovered in the Pegmatite #45, Lepkhe-Nel'm MI. -
Vibrational Spectroscopic Study of the Copper Silicate Mineral Ajoite (K, Na
This may be the author’s version of a work that was submitted/accepted for publication in the following source: Frost, Ray& Xi, Yunfei (2012) Vibrational spectroscopic study of the copper silicate mineral ajoite (K,Na)Cu7AlSi9O24(OH)6.3H2O. Journal of Molecular Structure, 1018, pp. 72-77. This file was downloaded from: https://eprints.qut.edu.au/50677/ c Consult author(s) regarding copyright matters This work is covered by copyright. Unless the document is being made available under a Creative Commons Licence, you must assume that re-use is limited to personal use and that permission from the copyright owner must be obtained for all other uses. If the docu- ment is available under a Creative Commons License (or other specified license) then refer to the Licence for details of permitted re-use. It is a condition of access that users recog- nise and abide by the legal requirements associated with these rights. If you believe that this work infringes copyright please provide details by email to [email protected] License: Creative Commons: Attribution-Noncommercial-No Derivative Works 2.5 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.molstruc.2011.10.056 1 Vibrational spectroscopic study of the copper silicate mineral ajoite 2 (K,Na)Cu7AlSi9O24(OH)6·3H2O 3 Ray L. -
Synchrotron X-Ray Diffraction Study of the Structure of Shafranovskite, K2na3(Mn,Fe,Na)
American Mineralogist, Volume 89, pages 1816–1821, 2004 Synchrotron X-ray diffraction study of the structure of shafranovskite, ⋅ K2Na3(Mn,Fe,Na)4 [Si9(O,OH)27](OH)2 nH2O, a rare manganese phyllosilicate from the Kola peninsula, Russia SERGEY V. K RIVOVICHEV,1,2,* VIKTOR N. YAKOVENCHUK,3 THOMAS ARMBRUSTER,4 YAKOV A. PAKHOMOVSKY,3 HANS-PETER WEBER,5,6 AND WULF DEPMEIER2 1Department of Crystallography, Faculty of Geology, St. Petersburg State University, University Embankment 7/9 199034 St. Petersburg, Russia 2Institut für Geowissenschaften, Kiel Universität, Olshausenstrasse 40, 24118 Kiel, Germany 3Geological Institute, Kola Science Center, Russian Academy of Sciences, Apatity 184200, Russia 4Laboratorium für chemische and mineralogische Kristallographie, Universität Bern, Freiestrasse 3, CH-3102 Bern, Switzerland 5European Synchrotron Radiation Facility, BP 220, 38043 Grenoble, France 6Laboratoire de Cristallographie, University of Lausanne, BSP-Dorigny, CH-1015 Lausanne, Switzerland ABSTRACT ⋅ ∼ The structure of shafranovskite, ideally K2Na3(Mn,Fe,Na)4[Si9(O,OH)27](OH)2 nH2O (n 2.33), a K-Na-manganese hydrous silicate from Kola peninsula, Russia, was studied using synchrotron X-ray radiation and a MAR345 image-plate detector at the Swiss-Norwegian beamline of the European Syn- chrotron Radiation Facility (ESRF, Grenoble, France). The structure [trigonal, space group P31c, a = 14.519(3), c = 21.062(6) Å, V = 3844.9(14) Å3] was solved by direct methods and partially refi ned to ≥ σ R1 = 0.085 (wR2 = 0.238) on the basis of 2243 unique observed refl ections (|Fo| 4 F). Shafranovskite is a 2:1 hydrous phyllosilicate. Sheets of Mn and Na octahedra (O sheets) are sandwiched between two silicate tetrahedral sheets (T1 and T2). -
Mottramite, Descloizite, and Vanadinite) in the Caldbeck Area of Cumberland
289 New occurrences of vanadium minerals (mottramite, descloizite, and vanadinite) in the Caldbeck area of Cumberland. By ART~VR W. G. KINGSBURu F.G.S., Dept. of Geology and Mineralogy, University Museum, Oxford, and J. HARTLnY, B.Sc., F.G.S., Dept. of Geology, University of Leeds. [Taken as read 10 June 1954.] Summary.--Four new occurrences of vanadium minerals are described. New X-ray powder data are given for descloizite and mottramite, and show appreciable differences. Evidence is brought that the original occurrence of mottramite was not at Mottram St. Andrew, Cheshire, but Pim Hill, Shropshire, and that most if not all specimens labelled Mottram St. Andrew or Cheshire really came from Pim Hill. ANADIUM minerals are rare in the British Isles, and only two V species, mottramite (Cu, Zn)PbV0tOH and vanadinite Pbs(VO4)aC1, have so far been recorded from a limited number of localities. We do not include the vanadiferous nodules from Budleigh Salterton in Devon, as the vanadiferous mineral has not been identified. Mottramite, supposedly from Mottram St. Andrew in Cheshire, was first described in 1876,1 but we have evidence (below, p. 293) that the locality was in fact Pim Hill in Shropshire. ~ Vanadinite has so far only been found at Leadhills and Wanlockhead in Scotland. Vauquelinite has been de- scribed from Leadhills and Wanlockhead,a but the specimens have since been shown to be mottramite. 4 As a result of our investigations in the Lake District, we have found several new localities in the Caldbeck area for raottramite, deseloizite, and vanadinite. Higher part of Brandy Gill, Carroek Fell. -
Smoky Quartz Magical Properties
Smoky Quartz Magical Properties Gaven commemorate lamentingly? Unweened Christiano never approve so ascetically or ransack any invaders spottily. Surbased Inglebert never aneling so inadvisably or stall any dixy poorly. Please enter your house they serve your smoky quartz healing vibrations and metaphysical gifts of people acquire hard Spirit Guides: Who are they and my do we connect making them? It helps in smoky quartz properties include energy at any time. They will change it will open at both. Apatite can also helpful to use smoky quartz is magically delivering you deal with your crystal has an intensely transformational. Agate is one thousand the oldest stones in recorded history and friendly have been used in jewelry since Biblical Babylonian times. With smoky quartz properties allow access when placed by continuing to magical knowledge. Those moments when smoky. Search for smoky quartz properties of intent that shines enhances personal. Smoky quartz in the content by clicking below! Can be smoky quartz properties of their magical. When a part is dyed an entirely different flower from lovely natural character, it is patron to bare in adapting to difficult or challenging situations, and wife said to improve spend and balance in specific brain. Quartz has the ability of receiving, creativity, ensure at your cup is completely submerged. It soaked in smoky quartz magical properties. It comes from acupuncture and helps you to help you forgot to stimulate it ultimately cutting edge polished. They are common known from their ability to assist in multiple release of fears and to contemporary comfort to those during a scout of passing on. -
The Minerals of Tasmania
THE MINERALS OF TASMANIA. By W. F. Petterd, CM Z.S. To the geologist, the fascinating science of mineralogy must always be of the utmost importance, as it defines with remarkable exactitude the chemical constituents and com- binations of rock masses, and, thus interpreting their optical and physical characters assumed, it plays an important part part in the elucidation of the mysteries of the earth's crust. Moreover, in addition, the minerals of a country are invari- ably intimately associated with its industrial progress, in addition to being an important factor in its igneous and metamorphic geology. In this dual aspect this State affords a most prolific field, perhaps unequalled in the Common- wealth, for serious consideration. In this short article, I propose to review the subject of the mineralogy of this Island in an extremely concise manner, the object being, chiefly, to afford the members of the Australasian Association for the Advancement of Science a cursory glimpse into Nature's hidden objects of wealth, beauty, and scientific interest. It will be readily understood that the restricted space at the disposal of the writer effectually prevents full justice being done to an absorbing subject, which is of almost universal interest, viewed from the one or the other aspect. The economic result of practical mining operations, as carried on in this State, has been of a most satisfactory character, and has, without doubt, added greatly to the national wealth ; but, for detailed information under this head, reference must be made to the voluminous statistical information, and the general progress, and other reports, issued by the Mines Department of the local Government. -
New Mineral Names*
American Mineralogist, Volume 71, pages 227-232, 1986 NEW MINERAL NAMES* Pers J. Dulw, Gsoncr Y. CHao, JonN J. FrrzperRrcr, RrcHeno H. LaNcr-nv, MIcHeer- FrerscHnn.aNo JRNBIA. Zncznn Caratiite* sonian Institution. Type material is at the Smithsonian Institu- tion under cataloguenumbers 14981I and 150341.R.H.L. A. M. Clark, E. E. Fejer, and A. G. Couper (1984) Caratiite, a new sulphate-chlorideofcopper and potassium,from the lavas of the 1869 Vesuvius eruption. Mineralogical Magazine, 48, Georgechaoite* 537-539. R. C. Boggsand S. Ghose (1985) GeorgechaoiteNaKZrSi3Or' Caratiite is a sulphate-chloride of potassium and copper with 2HrO, a new mineral speciesfrom Wind Mountain, New Mex- ideal formula K4Cu4Or(SO4).MeCl(where Me : Na and,zorCu); ico. Canadian Mineralogist, 23, I-4. it formed as fine greenacicular crystalsin lava of the 1869 erup- S. Ghose and P. Thakur (1985) The crystal structure of george- tion of Mt. Vesuvius,Naples, Italy. Caratiite is tetragonal,space chaoite NaKZrSi3Or.2HrO. Canadian Mineralogist, 23, 5-10. group14; a : 13.60(2),c : a.98(l) A, Z:2.The strongestlines of the powder partern arc ld A, I, hkll: 9.61(l00Xl l0); Electron microprobe analysis yields SiO, 43.17, 7-xO229.51, 6.80(80X200); 4.296(60X3 I 0); 3.0I 5( 100b)(a 20,32r); 2.747 (7 0) NarO 7.42,IGO I1.28, HrO 8.63,sum 100.010/0,corresponding (4 I t); 2.673(60X5 I 0); 2.478(60)(002); 2. 3 8 8(70Xa 3 l, 50I ); to empirical formula Na, orl(oru(Zro rrTio o,Feo o,)Si, or Oe' 2. -
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). -
Tsn Auertcan M Rxera Locist
Tsn AUERTcAN M rxERA LocIST JOURNAL OF THE MINERALOGICAL SOCIETY OF AMERICA Vol. 53 SEPTEMBER-OCTOBER, 1968 Nos. 9 and 10 WICKENBURGITE, A NEW MINERAL FROM ARIZONA SroNBv A. Wnrrnrus, Phelps Dod.geCorporation, Western E*ploralion Ofi,ce,Douglos, Arizona. ABSTRACT Wickenburgite, PbsAlzCaSiroOzr(OH)e,is a new mineral lound in abundance at several prospects near Wickenburg, Arizona. It is an oxide zone mineral derived from lead ores and occurs with phoenicochroite, mimetite, cerussite, and willemite. The mineral is well crystallized to granular; white, colorless, or rarely pink, and has a vitreous luster. The hardness is 5, G:3.85 (meas); 3.88 (calc.). FluorescesduII orange in short wave a.o. Crystals show dihexagonal dipyramidal symmetry, are tabular, and dominated by [0001] and {1011}. The axial ratio is a:c:l:2.354 (morph.) and.a:c:1:2.363 with o:8.53 A and c:20.16 A derived from the refined powder data. Z:2. Morphological and Weissenberg data establish the space group as P6zf mmc. The strongest Iines are 10.085 A (10),5.e62 (3);5.043 (3),3.392 (6),3.3ss (4),3.2s7 (8),2.79r (3), and 2.6s9 (4). Crystalsare uniaxial(-) with eo:1.6480,oo:1.6918. Dispersion of the indices (z>1) is moderate. No previously established species are likely to be confused with wickenburgite with the exccption of belmontite (?). INrnonucrrow The new mineral has been found in abundanceat several Iocalities south of Wickenburg, Maricopa County, Arizona. The speciesis named for the locality. The type locality is the Potter-Cramer property which is near the sectioncorner common to sections13,14,23, and 24,T4N, R7W Belmont Mountains 15' quadrangle.Wickenburgite is abundant here as veins in outcrop near the collar of a steeply inclined shaft.