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| Mountainland The Central Northern to Northwest Region including Damaraland The Central Namib Desertand...Copper Deposits The South The Pegmatitesin Central Namibia Luderitz and the Diamonds 44 49 241 254 272 275... Encyclopedia of the Mineralsof Namibia 443 Meteorites in Namibia Bibliography Index Photo credits... 20 t ~ ...__,__ Republic of Namibia The President State House W°Ntdhoek FOREWORD Namibia is endowed...from near and far. Fine mineral specimen from Namibia are displayed in all the famous natural science |
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| radioactive because: 1) they contain isomorphous t/+(and Thar?) substituting for Fe2+; 2) they contain...Radioactive columbite is related to a particular pegmatite district, its paragenetic position, and the presence...the opaque pegmatite minerals in polished section. Species studied included columbite-tantalite, stibiotantalite...enhancedin 1955 by the discovery, at the Mica Lode pegmatite in Fremont County, Colorado (Heinrich, 1948),...tabular crystals in a unit of albite-muscovite-beryl (+ triplite and spessaritite) rock that replaces |
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| TransTrans Canada Highway and the Flin Flon Snow Lake region that are accessible by road. Maps N to P show areas...supplementary journeys either by boat or aeroplane. Maps Q to T cover areas further north (Thompson-(Thompson- Lynn...Bird Lake Cat Lake Garner Lake 93 Interlake region 94 ............................................ . . . . Burntwood Lake .......... 105 Q Pain t Lake Cuthbert Lake . . . . . . . . . . . . . . ................ 107 S Rat Lake - Granville Lake T Lynn Lake U Cross Island V Island Lake (west) |
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| H. Pough MAY ARCHBISHOP MITTY LIBRARY 10749 T A *d49 POU field guide to rocks and DISCARD Archbishop...21. Birds' Nests Borror e) White e0 Chalif (east of Mississippi River) Harrison 29. Niehaus t0...and elongated octahedron 30. Parallel growth of beryl crystals 45 48 54 54 54 55 55 55 56 56 56 56 58...support. Their principal funds tor the purchase <>t specimens may be your financial contributions. In...about the nature of a rock specimen comes from the region where it was collected. In the field, knowing where |
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| Pegmatite Investigations 1942-45 New England By EUGENE N. CAMERON and OTHERS GEOLOGICAL SURVEY PROFESSIONAL...______________________________________ _ Location of pegmatite districts ___________________ _ Previous work...Acknowledgments ______________________________ _ History of pegmatite mining inN ew England _______ _ Mica mining _...deposits _______________________ _ Geology of the pegmatite districts of Maine __ :. . _____ _ Metamorphic...________________________________ _ Geology of the pegmatite districts of New Hampshire_ Rock units ______ |
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| City, South Dakota 57701,U.S.A. Ansrnlcr The pegmatite field and the Harney Peak Granite of the southern...consisting of thousands of sills and dikes. The pegmatite field is exposed over an area of 711 km'?.An isogram...pegmatitesless abundant toward the outskirts of the region. This trend is parallel to a drop in crystallization...Black Hills, South Dakota, are surrounded by a region containing about 24000 pegmatites. Approximately...the distribution of zoned pegmatites across the region and thus to add to the body of information that |
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| illustrated by lithium isotopes in micas SC a RI P T Sarah Deveauda-c*, Romain Millota-c, and Arnaud Villarosa-c...compositions in the Monts d’Ambazac Pegmatite Field (French Massif Central) RI P T exhibit a narrow range of...with the degree of magmatic evolution of each pegmatite type: from 630 ppm in Type II up to 13,500 ppm...ppm in the more evolved NU Type VI pegmatite. Although the rare-element contents e.g., Li, Cs, Ta of...of the micas are MA consistent with pegmatite differentiation, 7Li (‰) are firstly, independent of the |
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| report. where the birds denoted mine villages in a region of Mexico. It predates the Black Hills work by...llis Wolfe HISTORICAL CONSULTANTS Martin Anne Robert T. Curran, Jr. Richard Hauck Roger Mitchell Barbara...Loomis HISTORIC MINERAL FEATURE The Tip Top Pegmatite: A Historical Review and Mineralogical Update...thi barren land scape, I contemplated how this region was a beautifully encapsulated micro cosm of a...history ofrhe world" ( O' Ha rra, 1 92 9 ) . Tha t seems astoni hing, but correct. After 1 929 worldwide |
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| COLLECTING AREAS GIL.,.D FP.ANCON I� NOTCH l_'t. W001>.ITO CK I t 0 I P'R'tweu111• I I I I NEW I I... ' I '' J \ \ �-- ' ' \ I - Al'P9'0JC. I t M•LE.S ll - Pe.rt P.EGM\TITES: I ORIGIN AND...AND OCCURREN'JE Definition The term 'pegmatite' was originally used by Hauy ( 1822) to denote a graphic...inoh to more than several feet in width or length. Beryl crystals weighing over a ton are known - one crystal...e crystal. Characteristics The characteristic pegmatite texture has been discussed. are diagnostic also |
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| by rhyolites ro and granites, and greisen-, pegmatite-, quartz-type veins; and iii) cavities formed...XOH (Figs. 4C and 5C), excepting aplite- -p pegmatite samples described by Neiva and Ramos (2010) and... Ehrenfriedersdorf pegmatite-granite complex, Erzgebirge, Germany 16.09–18.95 T (°C) Jo Zinnwald...New 16 Kedron granite (Bonny River granite), East Kemptville leucogranite, Nova Scotia, Canada Topaz-bearing...Zhanchivlan Li-F granites -p m) of Yugodzir ore region, southeastern eastern Transbaikalia, Russia Xie |
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| along the c-axis; several of the bonds to the M2 and T sites are obscured from this angle; B) Two distinct...written as [IX]Mlr111M2JC[IVJTO4 )3 X, where Ml, M2,T and X represent the different structural sites mentioned...Samples are found in cavities in the Sapo granite pegmatite. Since2005 numerous pockets containing apatite...Fluorapatite "faden," 5.6 cm tall Alchori, Shigar Valley, Skardu District, Gilgit Baltistan, Pakistan John...MinasGerais,Brazil (see page 54); Palermo #1 Pegmatite Mine inNorthGroton,N ew Hampshire (page 28); Pomarolli |
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| and PuMice II (lepidolite subtypes) and V6~nfi I (beryl-columbite subtype) in western Moravia. Pollucite...geochemisch seltenen primitiven Pegmatit von V6~n/t. Ein extrem steiler Fraktionierungsgradient erzeugt...mineral known to date within the M oldanubian pegmatite subprovince of the Hercynian orogen of central...southern Bohemia, and Jeclov I, Puklice II plus V6~:n/t I in western Moravia, Czech Republic (Fig. 1). PRAHAI~...pollucite structure (Beger, 1969). Su~ice The parent pegmatite, Sugice III, constitutes a rather small dike of |
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| CALIFORNIA P 2995 IpSl q 49 f 07. 257889 ^ pe B T 5 w! balJ E of caufornia 2995 SEP 1933 0#MC0...the following notation: Section (Sec.), Township (T.), Range (R.), and Meridian (M.D.M. — Mount Diablo...CASCADE RANGE HI MODOC PLATEAU COAST RANGES S GREAT VALLEY SI SIERRA NEVADA 21 BASIN RANGES 3Zm MOJAVE DESERT...28.349 grams oz 31.103 grams Standard Lengths t t Metric Equivalent mile mi 1.609 kilometers foot...gravel deposits on the eastern side of the Great Valley Province into which the streams of the Sierra flow |
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| any a1e needs to take up t he study and collection of minerals. DANA'S I 11'T BOOK OF MINERALS by W ....3.00 FLUORESCENT MINERALS--A list of f luorescen t minerals . . . . . . . . . . . . . .25 HENLEY'S TWENTIETH... COLLECTING OVERSEAS. PART 1 (ITALY). By Cpl. R. T. H oward.... HENRY W. NICHOLS RETIRES ..............best to remit direct to the Publisher. Issued on the t st day of each month. A111hor1 • Ion, •rt r,sponsiblt...Collecting Overseas, Part 1 (Italy)," by Cpl. R. T. Howard, of the U. S. Army. Not only is this an intensely |
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| Red Sea Hills 12 Nile Valley from Wadi Halfa to the Third Cataract 12 Nile Valley from Karima to Abu Hamed...Hamed 13 Eastern Bayuda Desert and the Nilt� Valley tc> Atbara 1:1 Derudcb and Tehilla, Red Sea Prc)vince...Formation 27 Tertiary beds of southern Egypt and East Africa 28 Coastal deposits of the Red Sea margin...Wadi Amur and Nile River near Shereik 45 Blue Nile Valley 46 Nuba Mountains, Kordofan 46 Origin and age of'...Hofrat-en-Nahas copper deposit 47 Kutum lead-zinc deposit 47 Hc)t brines of the Red Sea 47 Iron ore Chromite Manganese |
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| jtyamanlutn ,nyn.ua , ed,anaa aa,Ma dtlnpeam .4,aa, 16H7 . t Oretlt. ft /Mm# »f.i Falu copper mine has been continuously...gahnite and långbanite were first recognized in this region and the word skarn (originally having a pejorative...Sweden Guide book: SGU Ca 66 Excursion leaders: T. Sjöstrand, M. Often and V. Perttunen. Topic: Archaean...complex Guide book: SGU Ca 67. Excursion leaders: T. Lundqvist, S. Sundberg and P. Kresten. Topic: Geology...United States. The traditional view of the Oslo Region among exploration geologists was, until then, that |
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| pegmatitescloseto the sillimaniteisogradbut farthestof all pegmatite varietiesfrom granitesrelatedto the samethermalevent...samethermalevent.The sparsityof Li-rich pegmatite bodieswithin relatedgranitesis also in accordwith an anatecticorigin:...processesinvolved in the petrogenesisof Li-rich pegmatite. Pegmatitesmay be either homogeneousor internally...core of the pegmatite. Not all assemblagesoccur in all pegmatites or even in all pegmatite districts....components that were depositedelsewherein the pegmatite, possibly in the mica-rich zones bordering the |
 | Černý, P., Chapman, R., Staně, J., Nová, M., Baadsgaard, H., Rieder, M., Kavalová, M., Ottolini, L. (1995) Geochemical and structural evolution of micas in the Rožná and Dobrá Voda pegmatites, Czech Republic. Mineralogy and Petrology, 55 (1) 177-201 doi:10.1007/bf01162587 | Journal (article/letter/editorial) |
| lepidolite might be possibly due to mixing of residual pegmatite fluids with metamorphic pore solutions. * Permanent...Muskovit und Lepidolith aus den Pegmatiten von Ro~n/t (Typlokalit~it des Lepidoliths; 323 +_9 Ma) in Westm~ihren...surprising to realize that micas from the Ro;mfi pegmatite in western Moravia, the type locality of lepidolite...lepidolite in particular, is quite remarkable in this pegmatite. Most of the meager information on the Ro~nfi...micas from Roan/t, we also resolved to incorporate the micas from the Dobr~ Voda pegmatite, another classic |
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| Group 2. Pyrrhotine Group 114 116 116 117 117 A!':D T YPES OF D EPOSITS C LASSIFI CATIOS A. B. 79 79...Association Geochemistry I. RutiJe Group 2. Columbite-Tantalite Group 3. Ilmenite Group 4. Perovskite Group 5...(a) Be-Al-Mg Association 1. Phenakite Group 2. Beryl Group 3. Euclase-Eudidymite Group 4. Andalusite-Topaz...lithium, uranium, selenium, tantalum, zirconium, t itanium, thallium , indium, rubidium, and others--are... (._)I.... ""-i • -0 v,• ~ I.... v, i:::0 t\i• Cl, oU 080 0 o '-'-.i o< 0 ~ "'co @ ~ |
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| XI THS OKMBSIS OP PBCUATITa Relation between pegmatite and wall-rock Rare-clement p^matites Replacement...with aplite Cause of the textural difference Pegmatite a replacement of aplite References 178 181 182...New York 27. Aplite-pegmatite vein, Minnesota 28. Apitte with central pegmatite, Tranabaikalia 29. Aplite...Aplite with marginal pegmatite, Washington State SO. Part of tbe Mendota vein, Colorado 81. Tbe system...volcanic araptiva roeka. BRUPTIVE OR ICNEOUS RUCKS t deep down in the crust of the earth, and they only |
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| The f i r s t d e s c r i p t i v e list o f Canadian m i n e r a l s was prepared by T. S t e r r y Hunt...Hunt and published by t h e Geological Survey of Canada i n Geology of Canada, 1863, Report of P r o g...Commencement t o 1863. Hunt's d e s c r i p t i o n s , which comprised 76 pages and included some 70 t o 80...proposed t o n o t i c e i n s u c c e s s i o n t h e v a r i o u s m i n e r a l s , which have, up t o t...t h e p r e s e n t time, been observed i n t h e province. Under each s p e c i e s w i l l be given |
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| 41 No. 1 March 1990 Mineralogy Geochemistry P e t r o l o g y PRODUCED IN COOPERATION WITH THE INTERNATIONAL...response. Members o f Societies which have agreed t o co-operate in this way are entitled to receive Mineralogical...A. Donaldson, C.H. (C.H.D.), Gt. Britain Frisch, T. (T.F.), Canada Frye, K. (K.F.), U.S.A. Frank-Kameneetskir... Gt. Britain Hsu, L.C. (L.C.H.), U.S.A. Irifune, T. (T.I.), Japan Lagache, M. (M.L.), France Lindqvist...U.S.A PUBLISHED JOINTLY BY T H E M I N E R A L O G I C A L S O C I E T Y OF G R E AT B R I TA I N AND |
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| Somali Ocean Basin and the Continental Margin of East Africa P.E. Kent I. Introduction ................188 188 189 190 194 197 200 201 202 The Red Sea Region E.M. EI Shazly I. Introduction ........................... B. Sedimentary Cover in the Red Sea Region ..................... C. Contribution of DSDP Drilling...Persian Gulf, Gulf of Oman, and Southern Pakistan Region Kees A. De Jong I. Introduction ............................................................ B. East Coast ......................................... |
