 | | Report (issue) | | caption, "Superb (dusty) phosphophyllite crystal group on matrix, tied to aCatholic shrine. The shrine...plwto Plldi.wp11�. Yaalte: 12.5 cm wide Siglo XX Mine, ,U� Bustillo province, Potosi Malty Zinn colkdknt...BY JAROSLAV HYRSL AND ALFREDO PETROV The Poopo District ................................................in Oruro ... 26 BY ROBERT B. COOK The Morococala Mine .......................................................... 70 BY ALFREDO PETROV The Viloco Tin District: World-Class Cassiterite .................... |  | | Report (volume) | | सकोली फ़ोल्ड बेल्ट, मध्य भारत SAKOLI FOLD BELT, CENTRAL INDIA ससं ्मरण भारतीय भूवैज्ञानिक सर्वेक्षण खंड...Geological Survey of India 27, Jawaharlal Nehru Road Central Headquarters Kolkata-700 016 Price: ₹ 864 / £...the Precambrian of Central India. The triangular outcrop belt of the Sakoli Group (“Bhandara Triangle”...supracrustal sequence in the Peninsular Shield of central India. The recognition of the Sakoli rocks dates...intersection of two significant mobile belts in central India. I sincerely thank Shri Bimal Kumar Bandyopadhyay |  | | Report (volume) | | mineral................................... 27 Wolframite................................................with elongated rhombic crystal faces, from Nugget mine, Gilpin County, Colo.-................... II. A...from Hoosier mine, Nederland, Colo.; B, Cuboid ferberite crystals from Georgia A. mine, Nederland. Colo...Nugget mine, Gilpin County, Colo.............................. IV. A, Hiibnerite from Birdie mine, Butte...Colo.................................. V. A> Wolframite with cinnabar from Jack claim, Clark Mountains |  | | Conference Proceedings (Volume) | | Cover photograph: View of the Aitik open pit copper mine in the very north of Sweden. Mining operations started...regional scale 3D-model of the Skellefte mining district, northern Sweden ..............................VHMS-type deposits, Kristineberg area, Skellefte District, Sweden . . ....................................modelling for VMS exploration in the Pyhäsalmi district, Central Finland ...................................ore body structural complexities: KDC East Gold Mine, South Africa . . ............................ |  | | Journal (issue) | | beginning on page 473. The left crystal and the central crystal are from pegmatite no. 576, near shaft...right is from a mid-1990s pocket near shaft 2. The central crystal is in the Marco Amabili collection; the... was ambushed and killed while returning to his mine near Tsavo in Kenya. His son, Bruce Bridges, and...6-square-km concession (2–3 km from the Scorpion mine) for the last three years, and had made numerous...and Rodney Bridges, a British geologist for the Central Mining Investment Corporation in South Africa. |  | | Journal (volume) | | Trevor F. Bridges 61-65 A report on Westernhope Old Mine, Weardale, Co. Durham Trevor F. Bridges Journal...Långban in Sweden, the Kombat Mine in Namibia, and the Mammoth St. Anthony Mine in Tiger, Arizona. • Production...from localities around Bristol such as the Wesley Mine and Coombe Farm and from other quarries around Frome...localities around Priddy including the Higher Pitts Mine. Consequently, we have good knowledge of these particular...material readily to hand – Higher Pitts Mine, Coombe Farm, Wesley Mine, Holwell Quarry, etc. In due course |  | | Book (edition) | | mm, Capillitas, Argentina, H Back cO\·erphoto: Wolframite. 45 mm. Yaogangxian, China, H Page 1: MuscO\ite...Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed by Grdllit.u.o. Stefanikova43...to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite |  | | Book (edition) | | Leigh McDonald Co\·er photo: \\ 7 ulfenite, Rowley Mine, Maricopa County, 4 cm high specimen, Evan and Melissa...some species have been relegated to group names (e.g., monazite group); others have had element designations...the zeolite minerals, where chabazite is now a group name with five species who differ only in the major...International Mineralogical Association (IMA), changed to a group name, or renamed by changes in nomenclature as mineral...geographic district names have been replaced with a more descriptive term, metallic mineral district. This |  | | Book (edition) | | examination of the large and economically important group of minerals referred to collectively as "ore" or...after etching with concentrated HN0 3 , Mineral District, Virginia (width of field = 1.2 mm). (c) Etchants...textures involving spha lerite from the Furutobe mine. Akit a Pr efecture, Japan . Milling Geol. 28, pp...Cubanite Valleriite Mill erit e Gra p hi te Co lor Ran ge (Darke r-Lighter) Bircflcctancc Range (Approx...Sometimes Seen in Air, Often in Oil Hematite Wolframite Chromite Blood red Deep brown Very deep brown |  | | Journal (issue) | | what it can do, w hat it is used for, and t he group of minerals it belong s t o. Origins gives the location... miners drill holes in the rock at Taxco silver mine in Mexico. Right: North Sea drilling rig 'Claymore-A'...the most fascinating examples in each min eral group. This map highlights some of the world's leading...in layman's terms below. GROUP Each mineral and gemstone belongs to a group, or family, of similar types...to chewing gum and antibiotics. 1 Halides- This group has approximately 100 minerals that combine one |  | | Journal (issue) | | TourmalineGolconda mine, Minas Gerais, Brazil SHOWS r Houston-Se.9-11 Bisbee - Oct. 9-12 Detroit - Oct...T°LOSANct ,Ccmine, Phoenixville, Pa. Hours: Wed-Sat. 10-5 Sunday...in Canada. Some of our earlier columnists simply ran out of things to say on their subject; others became...rhodochrosite, “W olf” mine, Herdorf, Siegerland, brown pyromorphite, “Friedrichssegen” mine, Bad Ems; brilliant...manganite, Ilfeld, Sax ony; stephanite, “Himmelsfurst” mine, Freiberg, Saxony; proustite, Niederschlema near |  | | Book | | considered to be a natural accumulation of useful mine ra l materials that can be profitably extracted...one te nds to flow. At the Dunkin mine of the Breckenridge district, Colorado, the Dunkin vein , wh ic...after it passed into shale (Fig. 2-4). In the same mine several le nticul a r ore shoots are separated by...Leadville, Colorado; or they m ay be lo ng to the great group o f stratiform deposits in sedimentary rocks, some...the porphyry above the gold o re, Breckenridge district. Co lorndo. After T . S. Love ring, U. S . C eo |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | Species containing more than one anion or anion group may be assigned to a separate class or may be assigned...specifies the atomic (cation to anion, or to anion group) ratio for the mineral. This and the remaining numbers...appropriate Dana number. When recognized, membership in a group is noted. Occasionally, the phrase “an inadequately...internally contradictory. 5A. Groups The term group refers to an aggregate or multiple (usually three...identical or closely similar structure and chemistry. A group may be named when there are several end members |  | | Report (issue) | | -------------------------------------------74 Central Basin platform -------------------------------...areas -------------------------- 145 Mogollon district -------------------------------------------------------------...-------------------------------296 Sillimanite group -----------------------------------------------...--333 North-central New Mexico ------------------------------------------- 3 3 7 Central New Mexico-...Mexico------------------------------------------- 3 4 7 North Central New Mexico ---------------------------------------------- |  | | Book (edition) | | Minerals that are listed as belonging to the same group are similarly closely comparable in composition...Cand CSPG Pennskiye gubemskiye wdomo.sti (Perm district ga=elle) Pl,ilosopl,ical Maga=ine Periodico de...Abernathyitc, K[(UO 2 )(AsO,)](HP) 3, tet., Fumerole No. 2 mine, Temple Mountain. on the southeast flank of the...104(3). 326-328 □ Achavnlitc, FcSe, hex .. Cacheuta Mine. Ccrro de Cacheuta. Sierra de Cacheuta. Mcndoza...Mountains,Russia,DANS 142, 181-184(sir.) Aescl1yni1e group 0 Aeschynite-(Nd),(Nd,Ce,Ca,Th)(Ti,Nb)i(O.OH) |  | | Book (edition) | | vvith the descriptive mineralogy of a selected group of species representing those most likely to be...one species only, or even specimens only from one mine. Whatever limits the collector imposes on himself...educated collector and connoisseur. In the latter group may be, for example, alexandrite twins from the...concentrically like a miniature solar system. The central ball of matter, comparable to the sun, is surrounded...while neutrons carry no charge at all. Thus the central cluster in every atom is also positively charged |  | | Report (issue) | | Olivenite, 1.6-cm cluster, Majuba Hill Mine, Antelope district, Pershing County. N. Prenn collection.... Davis The Goodsprings (Yellow Pine) Mining District, Clark County John C. Kepper 91 References ...COLOR PLATES (following page 242) Gold, Mexican Mine Gold, Majuba Placer Pyromorphite after Galena with...Round Mountain Mine Quartz, Lovelock area Acanthite Grossular, Nightingale district Quartz epimorph...after Calcite Agardite Grossular, Buena Vista district Quartz (amethyst) and Calcite Almandine-Spessartine |  | | Book (edition) | | Oxides The Halides The Carbonates Calcite Group Aragonite Group The Nitrates The Borates The Sulphates The...Wardite, Wavellite 240 241 31 Wolframite (Huebnerite), Wolframite (Ferberite), Powellite, Quartz, Tridymite... and go easy on the ore piles you may find at a mine or quarry. Even a few pounds of some minerals, like...consider specializing in some field: one mineral, one group, one locality, a crystal system, or the like. You...and were worn away. Only here and there in the Central States, as in the Black Hills, in the Ozarks, in |  | | Book (edition) | | and Their Related Families of Northeastern and Central North America by Boughton Cobb 11. A Field Guide...Guide to Trees and Shrubs (Northeastern and Central North America) by George A. Petrides 12. A Field Guide...Guide to Wildflowers of Northeastern and North-central North America by Roger Tory Peterson and Margaret...smashing of crystals in magnificient pockets by mine foremen; such vandalism is not only stupid,...vein, although it does give a company the right to mine, should not be taken as justification of thoughtless |  | | Book (edition) | | Rita 0s ose Reels w ed beaba alee oa Renets eo bere Ran ys ectem Dy WmyKCvser ee (ee ctore assis GaatsGh...of some gold mines and prospects in the Letaba District..............cceccceeeues 82 Diagtammaticsection...133 Geological«mapiofithe: Namaqualand: copper district... ..../. 0c .ses 0 cosa ceevcece nosh eeure bes:...the tungsten deposits in the Namaqualand copper district..................0. 229 Section of the titaniferous-vanadiferous...Stratigraphic sections of the Karoo System in the central and northern Transvaal showing the SAUTE OsTR 2 |  | | Book | | ....... 142 K 2. 3. 4. 5. 6. Iron-Platinum Group ..................................................p ............................................ Group of Sem im etals................................................................... 3. Sphalerite Group ................................................................................... 6. Covellite Group .................................................................................... 7. Orpiment Group ............................................... |  | | Book (edition) | | when the “3-dimensional order” button is Space Group | Oxides and reislaesd| Ill clicked. 2-dimensional...Representations of Some Space Groups 208 Space Group Derivation 208 Illustrations of Space Groups 208...442 Inosilicates 446 Pyroxene Group 447 Pyroxenoid Group 451 Amphibole Group 452 Phyllosilicates 456 Tectosilicates...Tectosilicates 467 SiO, Group 468 Feldspar Group 470 Structure 471 Composition 474 16. CRYSTAL CHEMISTRY...2 Evaporite Minerals 394 Feldspathoid Group 477 Zeolite Group 477 References and Further Reading 19 |  | | Book | | As a result, these rocks are coarse-grained. Central cores of major mountain ranges consist of large...complex high-temperature reactions take place among mine~als, and each mineral assemblage produced is a clue...metallic elements of Group I of the period ic table and the very nonmetallic elements of Group VII. Elements...covalent bonds. Elements near each other in the central portion form cove lent crysta Is with some meta...magnetized and so will attract pieces of unmag netized i ran. Pyrrhotite (Fe 1.xS) and ii men ite (FeTi0 3) are |  | | Report (issue) | | Brown ----------------------------------Platinum-group metals, by Norman J Page, Allen L. Clark, George...equivalent of the southeast 3 INTRODUCTION Missouri district can be expected to turn up in the future ; the...mid-1950's on the west side of the Southeast Missouri district resulted in the discovery of the large unexposed...part of the district. With the phoenixlike rejuvenation of the Southeast Missouri district, the Viburnum...must know not only in which direction a particular mine opening should be extended to continue in an ore |  | | Book (edition) | | vanadinite, wavellite. Tungstates, Molybdates Wolframite, scheelite, wulfenite (crystals). Silicates Quartz...concentrically like a miniature solar system. The central ball of matter, comparable to the sun, is surrounded...while neutrons carry no charge at all. Thus the central cluster in every atom is also positively charged...packing prevails in the metals of the platinum group. A few se1ni-11ietals, so n arned because they have...TETRAHEDRAL Four lorge otoms surround i ng o smoll central otom of opposite chorge OCTAHEDRAL ✓f"\ ------ |
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