 | | Book | | Major monumental stone processors in southeastern Australia Granites with dimension stone potential, Victoria...production of each commodity, with the emphasis on Australia, is included to enable Victoria's known deposits...placed in the context of their importance to Australia and the world. Victorian production Past and...construction, filtering and drainage, processed quartz sands and pebbles are used in a variety of industries...with other minerals including chert, jasperoid, quartz, galena, pyrite and sphalerite (Brobst, 1983; Harben |  | | Book (edition) | | NoSTRA.'-D Rrn,'HOLD AUSTRALIA PTY. LTD. 17 Queen Street Mitcham, Victoria 3132, Australia V.-\..'- NOSTR.-\...are so widespread, as in the case of the alluvial quartz gemstones of the Midwest, that it is impossible...formations containing cryptocrystalline varieties of quartz, such as agate and petrified wood, extend over...negatives of the photographs he has taken on numerous field trips; many of the prints from these negatives appear...(V esuvianite), The Garnet Group. 199 246 III QUARTZ FAMILY GEMSTONES IV RARE AND UNUSUAL GEMSTONES |  | | Journal (issue) | | systematically arranged. Lieber traveled widely and field-collected at many localities in the U.S., Germany...Britain, Hungary, Yugoslavia, Romania, Ceylon, Australia (including Tasmania), China, South Africa, Namibia...Wulfenite | Erupción Mine, Mexico 11 x 10.5 x 5.2cm Quartz var. japan law twin, Ganesh Himal, Nepal, 10 cm...with tourmaline, have sustained the Golconda pegmatite field’s reputation as among the most important...in all of Brazil. INTRODUCTION The Golconda Pegmatite Field is a familiar name to mineral collectors, but |  | | Book (volume) | | collectors can use both volumes as a guide during their field trips in search of gems, for there is complete information...Nostrand Reinhold Australia Pty. Ltd. 17 Queen Street Mitcham, Victoria 3132, Australia Van Nostrand Reinhold...variety and wealth of locality information concerning quartz gemstones are recognized in a separate chapter...Alaska, provided data on gemstones found in that region; the Southern Onyx and Marble Company of San Diego...well-known Texas agate localities of the Alpine Region were described in detail by J. Frank Woodward |  | | Report (issue) | | 15th DJST., DeKALB COUNTY, GEORGIA, SHOWING PEGMATITE DIKE IN MICA SCHIS'.r. FRONTISPIECE GEOLOGICAL...and a second detailing the nature of the rock pegmatite and the uses, values, and the like, of its most...information was obtained .at first hand either in the field or from laboratory study. The remainder has been...LIS'J' OF ILLUSTRATIONS CHAPTER I. iii iv PEGMATITE . . . . . • • . . . . . . . . . . . . . . . ................................................ . Quartz .............................................. |  | | Report (issue) | | ··--------- ------------------------- 43 18 Pegmatite pod- elongated parallel to mica lineation ------------------...analyses of biotite-plagioclase gneisses from Reed Creek and Smith Districts --------------------------------...the writer in the field and made numerous useful suggestions. Expenses for the field work which extended...underlain by biotite granodiorite gneiss in the Shoal Creek District, differs from areas underlain by the metasedimentary...Forms clay in very wet places Hornblende rare Quartz Biotite Muscovite Crystals pitted and dull |  | | Report (chapter) | | area . Lucy pegmatite. Results of the drill program . ..... . .. . . . Artdon pegmatite Subsurface pegmatite..... . . ... . . Molly and Bendum claim s Deer pegmatite , West Hawk Lake. . . . . . . . . . . . . . ....Lake .. ... . . . ... ..... .. . . . . . Beryl pegmatite north of Telford. 7 7 9 9 12 12 12 15 16 17 17...Lake/Cat Lake areas General statement 19 19 Pegmatite dykes in the Pointe du Bois area (Lac du Bois...Lamprey Falls) Lac du Bois pegmatite K-1 pegmatite . Lucky NO.3 pegmatite Pine claim , Winnipeg River |  | | Report (volume) | | Texture of granitic rocks___________ ________ 17 Pegmatite ___________..__________ _ _____ 18 Porphyry______________...Granite dikes________________________________ 48 Pegmatite dikes_______________________________ 48 Aplite...Geodes______________________________ 51 Secondary quartz on joint faces______________ Veinlets of zeolite_______________...Method____________________________________ Fail-field County______________________________ Bridgeport..._____ 79 Norcross quarry _________. _ 79 Stony Creek quarry ______________ 82 Brooklyn quarry ______________________ |  | | Journal (issue) | | 2023 Articles Minerals of the Espirito Santo Pegmatite District, Eastern Brazil.. ......697 by M. L....recently completed road, he was fascinated by the quartz and amethyst geodes that could be seen in the road...collected specimens from the cavities of the auriferous quartz vein and sold them in Nova Lima, where collectors...frequent trips to the northeastern region of Minas Gerais looking for pegmatite minerals. Thus, his collection...from Morro Velho), magnificent specimens of rose quartz crystals and many other good specimens. In 2010 |  | | Report (issue) | | Geology of the Blue Mountains Region of Oregon, Idaho, and Washington: The Idaho Batholith and Its Border...PROFESSIONAL PAPER 1436 Geology of the Blue Mountains Region of Oregon, Idaho, and Washington: The Idaho Batholith...Professional Paper 1436. Geology of the Blue Mountains region of Oregon, Idaho, and Washington) Includes bibliographies...1436. IV. Series: Geology of the Blue Mountains region of Oregon, Idaho, and Washington. QE611.5.U6133...work that has been completed in the Blue Mountains region and to emphasize the region's importance for understanding |  | | Journal (article/letter/editorial) | | Tools and Workflows for Grassroots Li–Cs–Ta (LCT) Pegmatite Exploration Benedikt M. Steiner Camborne School... This paper reviews the main controls of LCT pegmatite genesis relevant to mineral exploration programs...regional areas, initial targets are verified in the field by geological mapping and geochemical sampling....as industrial mineral deposits. Keywords: LCT; pegmatite; lithium; exploration; targeting 1. Introduction...decades research into rare metal Li–Cs–Ta (LCT) pegmatite mineralisation has predominantly focused on the |  | | Report (volume) | | Contact metamorphisni ____...._________._.-.._ Quartz-augite porphyry dikes__..___...__._____ . _ .....limestone_________________ Cassiterite and wolframite quartz veins__________ JMetasomatic processes___________________...Creek___________:____________________ 61 Grouse Creek _____________________ ________ 62 Fairhaven district_____________...ILLUSTRATIONS. Page. PLATE I. Topographic map of tin region, showing location of metalliferous prospects ___...Banded apophysis from garnet-vesnvianite mass on Tin Creek ; B, Orbules in marble matrix, showing mode of origin____ |  | | Journal (issue) | | localities and also localities worldwide. His favorite field-collecting sites ran the gamut from British Columbia...Missouri Minerals. He would often spend summers field collecting with a local minister, Durban Thorpe...group involved in mineral collecting; they took field trips to the Mesa Grande district, the Crestmore...maintained his mineral hobby, leveraging his time in the field near excavation projects to collect mineral specimens...Gazers, the San Mateo Gem & Mineral Society, the Northern California Mineralogical Association, the Sequoia |  | | Journal (issue) | | Titanite and epidote deposits of the Capelinha Region, Minas Gerais, Brazil ...........................for two summers, subleasing the Royal Peacock, Northern Lights and Myers claims (he wrote a chapter on...Museum Professionals) in 1983, served as the Northern Field Representative of the Nevada Outdoor Recreation...TITANITE AND EPIDOTE DEPOSITS OF THE CAPELINHA REGION, MINAS GERAIS, BRAZIL Andrea Bartorelli1 Carlos...W. Romano3 Since the mid-1960s, the Capelinha region in the State of Minas Gerais, Brazil, has become |  | | Report (issue) | | Climate and vegetation 16 work Acknowledgments Field 1 17 17 ~ GEOLOGIC FEATURES Previous investigations...metavolcanic rocks Hybrid gneisses and associated quartz diorite and granodiorite (Cretaceous and/or older)...Escondido Creek leucogranodiorite __ Roblar leucogranite Other intrusive bodies Pegmatite and aplite...and Tertiary rocks of the San Diego coastal plain region Cretaceous system Tertiary system _ Paleocene rocks...associated pyroclastic and sedimentary rocks Fish Creek gypsum Tertiary system Miocene-Pliocene rocks |  | | Journal (issue) | | Auguste & G. Bonin Fluorite from Riemvasmaak, Northern Cape Province, South Africa . . . . . . ...larryrush@worldnet.att.net, and supplying their name, region, email address, interest in trading or selling...establishing a School of Mines in Tucson, Arizona Territory, in 1885. The main building opened for classes...thick sub-horizontal pegmatite that was discovered in 1985 and has produced large pockets of quartz crystals...been known previously for its giant specimens of quartz and for excellent, gem-quality, “blue-cap” elbaite |  | | Report (volume) | | Special features_____________________________ Pegmatite dikes in groups____________________ Muscovite...granite gneiss, Milford, N. H.; B, Diorite with pegmatite dike cut by diabase dike, Round Pond, Maine____________________...Maine___________-_________________ XXII. A, Monument of quartz diorite, Round Pond quarry, Maine; B, Monument...quarry, Conn.; B, Ovoidal weathering in very fine quartz monzonite from Westerly, R. I_..__________________________...biotite granite gneiss, Norcross quarry, Stony Creek, Conn.; B, Obelisk of hammered .pegmatitic biotite |  | | Journal (issue) | | matlockite appear to have a reasonably large stability field in the conditions that might be ex-peeredduring... (1923-2004) talk to people. Even when out on field trips John would always try to explain to sometimes...of specimen photography: resolution and depth of field. Conventional photography at high magnification...better, but only in the plane of focus. The depth of field is so small that everything outside the plane of...this technique, images with an acceptable depth of field can be produced for printing at linear magnifications |  | | Journal (article/letter/editorial) | | Queensland, Australia P. J. STEPHENSON Geology Department, James Cook University, Townsville,Australia 48 1...late-crystallized arfvedsonite. The mountains show quasi-horizontal jointing and layering at many localities. Some...evident. These are varied but commonly involve comb-quartz layers or plumose quartzfeldspar intergrowths....be ascribed to varied undercooling whereas comb quartz layers grew from a separate aqueous fluid. Directional...Hypersolvus granite Undercooling Intergrowths Comb quartz 1. INTRODUCTION Throughout the world, layering |  | | Journal (issue) | | crystals from the Mud Tank Carbonatite, Northern Territory, Australia .......................................... 747 COVER: AQUAMARINE with microcline and quartz (nicknamed the “King of Kashmir”), 80 cm, from...Montgomery was introduced to Edwin Over, another field collector, by Harvard mineralogist Charles Palache...mineral specimens; sometimes they worked in the field together, but much of the time Over worked alone...conducting research, publishing numerous bulletins, field guides, and memoirs, all while building the college’s |  | Gourcerol, B., Gloaguen, E., Melleton, J., Tuduri, J., Galiegue, Xavier (2019) Re-assessing the European lithium resource potential – A review of hard-rock resources and metallogeny. Ore Geology Reviews, 109. 494-519 doi:10.1016/j.oregeorev.2019.04.015 | Journal (article/letter/editorial) | | enrichment. Keywords: lithium, metallogeny, pegmatite, Europe, resources 17 18 Abstract 19 Lithium...area of about 63 400,000 km2 from northern Argentina and northern Chile to western Bolivia (Ericksen...lithium-cesium-tantalum (LCT) pegmatites in the Greenbushes (Australia) have been mined for 77 decades by Talison Lithium...production historically has been dominated by Australia (e.g., Greenbushes deposits), 79 South America...Li metal 80 produced in 2016, 39% came from Australia, 32.8% from Chili, 15.6% from Argentina and 5 |  | | Journal (article/letter/editorial) | | PROCESSES IN GRANITIC PEGMATITES: EXAMPLES FROM TWO PEGMATITE FIELDS IN SOUTHERN NORWAY RUNE B. LARSEN§ Geological...pegmatites from the Evje–Iveland and Froland pegmatite fields in southern Norway was analyzed for the...technique. Earlier results imply that the two pegmatite fields are nearly indistinguishable in terms of...southward-propagating system of vertical and horizontal faults and fractures. Keywords: granitic pegmatites...les résultats antérieurs, les deux champs de pegmatite n’étaient pas distinguables en termes de leur |  | | Journal (article/letter/editorial) | | phenakite crystals that were found dominantly in the northern part of the pluton where they were associated...However, a small remnant of a comparatively large pegmatite is exposed in the southern portion of the property...Rochester Mineralogical Symposium The roughly horizontal pegmatite as initially exposed was well-zoned, but...(10–15 cm) consists of moderately coarse microcline, quartz, and biotite, followed by a 1–2-meter-thick intermediate...coarse microcline and quartz with miaroles in part filled by fluorite, and a coarse quartz-microcline core |  | | Journal (issue) | | inner parts of the pegmatites, on each side of a quartz core or concentrated in pockets, which are variable...variably perthitized, albite, muscovite and milky quartz with some lepidolite, schorl and locally huge tabular...black dravite specimens. Keywords: Tourmaline, pegmatite, eluvial deposits, gem mining, Brazil © Gemmological...tourmaline is found mainly in metamorphic rocks, quartz veins and granite pegmatites which produce the...Fibrous tourmaline crystals upon quartz, from the Säo Jose da Safira region. Sample is 130 mm long. Occasionally |  | | Book | | 619 The large quartz family 624 Rock crystal 630 Citrine 633 Smoky quartz 636 Rose quartz 641 Exceptional...Exceptional amethysts 653 Quartz with inclusions 656 Rutilated quartz 661 The chalcedony 665 The fascinating...phanerozoic sedimentary basins: geodes of amethyst quartz, agate, zeolites, apophyllite, silicified anhydrite... topaz, garnet, ap:1tite and other phosphates, quartz, mica, feldspar, chrysoberyl, euclase, phenakite...sillimanite, kyanite, andalusite, staurolite, garnets, quartz, feldspars, pyroxenes, cassiterite, topaz, wolframite |
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