 | | Report (issue) | | FRONT COVER: Columbite-tantalite crystal from Mitchell Mine, Bedford County, Virginia (approximately...pegmatite mine (A) and White Peak No Dumps, Herbb No. Sketch map of Herbb No. 2 pegmatite mine ..........and niobium-bearing samples tested 2. Value of tantalite and columbite .2 pgmatite prospect (B) .......tantalian and niobian metals in Virginia are tantalite or columbite, wodginite, and pyrochlore or microlite...Ruthedord Mine: The Ruthcrford pegmatite mine is located in Amelia County 0.95 mile north of Amelia Court |  | | Book (edition) | | (Brazil). Malcolm Back (Canada), Henry L. Barwood (USA). Dmitriy Belakovskiy (Russia). Fabio Bellatreccia...(Italy), T.S. Ercit (Canada). Alexander Falster (USA). Jeffrey de Fourestier (Canada). Robert Gault (Canada)...Henderson. Jr. (USA). D.D. Hogarth (Canada). J.L. Jam bor (Canada), Anthony R. Kampf (USA). Pave! M. Kartashov...Karnp-Moller (Denmark). Akira Kato (Japan). Lance E. Keams (USA). Elisabeth Kirchner (Austria), Uwe Kolitsch (Austria)...Republic). Per Nystcn (Sweden), David O'Hanlcy (USA). Filippo Olmi (deccased) (ltaly). Werner H. Paar |  | | Book (edition) | | CUTTING-A Lapidary's Manual, 2nd Ed. GEMSTONES OF NORTH AMERICA GEMSTONES AND MINERALSHow and Where to Find...at the outstanding shows of the annual San Diego County Fair at Del Mar, California. In addition, the collections...crystallizations, and so far beyond ordinary experience that fe,,v persons can resist being attracted to them. Practically...one species only, or even specimens only from one mine. Whatever limits the collector imposes on himself...for whom the emerald-green spodumen e from North Carolina, hicldenite) is named; George Frederick Kunz |  | | Book (edition) | | the outstanding sho,vs of the annual San Diego County Fair at Del Mar, California. In addition, the collections...namely, talc, gypsum, calcite, fiuorite, apatite, fe ldspar, quartz, topaz, and corundum, are readily...shells, but extra ones cannot be jammed in,vard. A fe,,v electron diagrams of typical elements are sho...contains no 1nore than this n1agic nun1ber of eight! A fe,v elements naturally contain exactly eight electrons...These are: Antimony Gold I ron Lead l\1ercury Sb Au Fe Pb I-Tg -from Stibiu1n -from Aurum -from Ferrum |  | | Book (edition) | | Latsddoadt alee stesy Panmony oy © BAGoetites sh, Jer Fl lca eten. 5 SSSA PS RW. Fad alahoiel, aniilaett ESCO...103 107 111 113 115 117 123 TED AC ERC VSCE MET fe ei hee. See ere et ARES &hielaats 5 Gre Mle s S SOE...Vernitculiteby JoJeSchoemani andiA, J) Mu Brabersesmaiiss fe cad Q deadvetotnshh LO Bnd oe 369 373 375 377 381... TEXT FIGURES Page paleo aiueco. minerals GUID Fe NelOd 100K 197 at, ints wcieaiusiticunaale +oss antheed...of the Karoo System in the southern Transvaal, north-western Orange Free State-and Norther Natal snOwine |  | | Journal (volume) | | Sussex P0191 UO, England (Telephone 0243 770350). North Ame,,ca: Arthur C. Lipner. National Advertising...Marseille, France; F. B. Van H outen, Princeton, USA; R. T. Watkins, Cape Town, South Africa; J. A. Weir...traverse and reappears in two separate lenses, to the north and along strike (Figure 9), indicating the BARBERTON...dominant sense of n1ovement of the 02 thrusts to the north in the northern and western part of the succession...Onverwacht Group adjacent to the Lochiel Granite, north west Swazila nd. Geological Society of S0111h Aji·ica |  | | Book (edition) | | feldspar, I(i\.18 i~O8, a nd to mica, I( (l\'fg, Fe)a(OI-[,F)2;\l8i3O10In examining another co1n1non...{201 J; a = (a: oob : coc), 1100\ . Axinite (Ca2(Fe,11n)Al2OI-IBO3Si4O12). , x ..7 Fig. 274. Fig. 275...outline. San Fig. 308. AgaLe. Brazil. Diego County, California. In allochromatic minerals the color...rcadil)· distinguished by their streaks: hematite ( Fe 2O3), red bro,vn; goethite (IIl'eO2) ,ycllo,Y brown;...is of in1portance in the identification of only a fe,v minerals. Ho"·e,·er, it n1ay be u:seful in the |  | | Book | | with 5 edges shared per MnO6 octahedron VI 2+ 3+ Fe –O 450–500 Octahedron Sb3+–O 460–560 Valentinite...610–620 Isolated octahedron V VI Zr–O IV 3+ Fe –O 610–660 Tetrahedron VI W6+–O 615–815 Octahedron...manaksite water preferably occupies unit cells in which Fe or Mn are substituted with calcium that is present...unit cell; these OH groups coordinated by 1 Mg (or Fe) and 1 Si (or Al) are generated by a partial replacement...configurations (MgR2+R2+)– OH–□ and (MgMgR3+)–OH–□ where R = Fe or Mn (Ishida and Hawthorne 2001). Consequently, |  | | Book | | examp le. quartz (S10 2), rutil e (Ti0 2). hematite (Fe,0 1). Also in this category are the hydroxides, compound...elements with silicon and oxygen-for example, olivine ((Fe,Mg 2) [SiO 4]) and kyanite (Al2[SiO5]). Photos:...Chemical Classification Siderite, 8ri.iderbund Mine, near Eiserfeld (Siegerland, Germany), 3x almost...specimen shown here comes from the Eagle's Nest Mine in California, and its actual size is about 2 inches...be scratched with fluorite, take the next-harder mine ral from the scale, until yo u find a mi ne ral |  | | Journal (volume) | | California OF MlNE&siTY of AV,S RY I ( 59 Amador County, IRY BUILDING, 9 LIBRARY STATE OF CALIFORNIA...centers of the state exhibits of minerals, rocks, mine models, etc. a service laboratory for the determination...Symons and 59 Mines and Mineral Resources of Amador County, California, by 149 Denton W. Carlson and William...William B. Clark Plate Plate 1. Map of Amador County showing mines and mineral (7) resources In pocket...along profitable ways, and the industries which mine or use raw mineral materials. effective way to disseminate |  | | Book | | the claims already staked by mining engineering, mine valuation, geophysics, and engineering geology,...Tyler (Exploration for Iron Ores), Robert K. Warner (Mine Valuation), and Kenneth K. Welker (Rock Bursts)...in valuation. 19. GEOLOGICAL WORK AT AN OPERATING MINE 503 "Theoretical" or "Practical"? Place of Geologists...ClassificaLion of Ore De posits. Geologic Tinie-Scale: For North A,nerica; For Europe. Chemical Ele1nents and Their...properly be devoted to the detailed study of a single mine is necessarily li1nited, and partly because of the |  | | Book (edition) | | réellement des polyèdres géométriques. Si l'on exa- mine par exemple, les polyèdres à six faces, fig. 5,...que le graphite, dont on fait les crayons dits de mine de plomb, dans diverses estent au toucher , ,...l'exposant 1 Ainsi Fe Su indique la combinaison d'un atome de fer et d'un atome de soufre ; Fe Cu Su^ indique...de soufre. On comprendra de , , . même Fe^ Gu Su3, Fe^ Cu'^ Su5, etc. Dans la combinaison de trois...Ainsi au lieu de Fe Cu Su^ on peut partager l'élément électro-négatif entre et écrire Fe Su -f- Cu Su. les |
|
