 | | 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...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...Consequently the authors (CC and AB) traveled to the region in June 2017 and March 2018 to tour the various |  | | 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 . . . . . • • . . . . . . . . . . . . . . . ....110, 15th Dist., DeKalb County, Ga., showing pegmatite dike in mica schist Frontispiece PLATES FACING |  | | Report (issue) | | granodiorite gneiss and a slightly foliated to massive muscovite and/or biotite granodiorite. The latter rocks...gneiss was formed by metasomatic processes. The muscovite and biotite granodiorites may have formed by anatexis...sillimanite~graphite schist ~~~~~~~~~~,~~~~~~~~ 13 Muscovite schist ---------------------------------------------...Fractured plagioclase in muscovite granodiorite 25 14 Plagioclase replacing muscovite 28 15 Saussuritized...··--------- ------------------------- 43 18 Pegmatite pod- elongated parallel to mica lineation ------------------ |  | | 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...World production of barite in 1992 was 4.9 Mt; Australia producing just 0.4% of this total, or 22,000 t...Oraparinna and Dunbar in the Flinders Ranges region of South Australia. The deposits occur in vein systems with |  | | Book (edition) | | NoSTRA.'-D Rrn,'HOLD AUSTRALIA PTY. LTD. 17 Queen Street Mitcham, Victoria 3132, Australia V.-\..'- NOSTR.-\...negatives of the photographs he has taken on numerous field trips; many of the prints from these negatives appear...Mounce diamond crystal 5. Gibson's Ruby mine, Cowee Creek, North Carolina 6. Corundum Hill, North Carolina...W. pegmatite mine, Pala, California 17. Mack mine, Rincon, California 18. Beryl-bearing pegmatite, Baja...Ramona, California 21. Gem-bearing pocket in pegmatite, Baja California 22. Drawing of topaz crystal |  | | 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...Method____________________________________ Fail-field County______________________________ Bridgeport..._____ 79 Norcross quarry _________. _ 79 Stony Creek quarry ______________ 82 Brooklyn quarry ______________________...of the trade) from the Norcross quarry at Stony Creek; B, Obelisk of hammered pegmatitic biotite granite |  | | 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 (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 |  | | 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...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...assisted, and encouraged me on virtually every field trip taken. Without his intimate knowledge of many |  | | Journal (issue) | | 2023 Articles Minerals of the Espirito Santo Pegmatite District, Eastern Brazil.. ......697 by M. L....frequent trips to the northeastern region of Minas Gerais looking for pegmatite minerals. Thus, his collection...be the epitome of quality and rarity in its own field. It would be a sort of “collection of collections”...MINING VENTURES Minerals of the Espirito Santo Pegmatite District Eastern Brazil Mario Luiz de Sá C. Chaves1...BY CARLOS CORNEJO The exploration of Brazilian territory was motivated by the search for riches, among |  | | Report (volume) | | 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____...across Lagoon Creek, Cape Mountain________ 7. Geologic sketch map of Cassiterite Creek and vicinity______... Since the discovery of stream tin in the York region by the Geological Survey in 1900 the tin deposits |  | | Report (volume) | | features_____________________________ Pegmatite dikes in groups____________________ Muscovite veins___________________________...granite gneiss, Milford, N. H.; B, Diorite with pegmatite dike cut by diabase dike, Round Pond, Maine____________________...biotite granite gneiss, Norcross quarry, Stony Creek, Conn.; B, Obelisk of hammered .pegmatitic biotite...biotite granite gneiss, Norcross * quarry, Stony Creek, Conn__l______________ KX) XXXI. A, Coarse porphyritic...Mass ___________________ _________________ 3. Horizontal section of diabase dike in Deep Pit quarry, Rockport |  | | Journal (issue) | | Auguste & G. Bonin Fluorite from Riemvasmaak, Northern Cape Province, South Africa . . . . . . ...COVER: AQUAMARINE beryl crystal, 10.5 cm, on muscovite, from Mount Xuebaoding, Pingwu County, Sichuan...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...com.br The Sapo mine exploits a thick sub-horizontal pegmatite that was discovered in 1985 and has produced |  | | 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...Additional minerals known from past work on the pegmatite include sparse columbite-(Fe), columbite-(Mn)...crystallized coatings on microcline to 4 cm; muscovite as millimeter-sized silvery plates; and calcite |  | | Report (issue) | | Climate and vegetation 16 work Acknowledgments Field 1 17 17 ~ GEOLOGIC FEATURES Previous investigations...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...Fluorine minerals ._ Gem minerals Gem-bearing pegmatite deposits Distribution and general features Summaries |  | | 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) | | consist of K-feldspar variably perthitized, albite, muscovite and milky quartz with some lepidolite, schorl...black dravite specimens. Keywords: Tourmaline, pegmatite, eluvial deposits, gem mining, Brazil © Gemmological...crystals upon quartz, from the Säo Jose da Safira region. Sample is 130 mm long. Occasionally contrasting...place in the sequence of deposition within the pegmatite. Thus this property cannot be used to determine...freely transmitted except for a faint absorption region near 560 nm. There is a fairly strong and narrow |  | | Journal (article/letter/editorial) | | several prospecting trips to Moody Mountain in northern Oxford County, Maine, where deep blue aquamarine...mineral collector in that the exposure shows pegmatite emplacement with scope and clarity rarely seen...547 pegmatite dikes (numbered 1-3 on the illustration) and a series of generally horizontal bodies...bodies of pegmatite up to 100 feet in thickness, which form a large part of the scarp. It was noticed early...early in the exploration that the pegmatite was of two distinct types, only one of which contained beryl |  | 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 (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 |  | | 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 |  | Breiter, K., Ďurišová, J., Hrstka, T., Korbelová, Z., Vašinová Galiová, M., Müller, A., Simons, B., Shail, R.K., Williamson, B.J., Davies, J.A. (2018) The transition from granite to banded aplite-pegmatite sheet complexes: An example from Megiliggar Rocks, Tregonning topaz granite, Cornwall. Lithos, 302. 370-388 doi:10.1016/j.lithos.2018.01.010 | Journal (article/letter/editorial) | | The transition from granite to banded aplite-pegmatite sheet complexes: An example from Megiliggar rocks...The transition from granite to banded aplite-pegmatite sheet complexes: An example from Megiliggar rocks...The transition from granite to banded aplite-pegmatite sheet complexes: an example from Megiliggar Rocks...grain size differences between the aplite and pegmatite MA could be related to pressure fluctuations...undercooling. D Key words: granite; aplite; pegmatite; magmatic layering; Megiliggar Rocks; Cornwall |  | | Book | | photograph: Crystal of brazilianite (25 mm), muscovite and feldspar, Lin6polis, Divino das Laranjeiras...graphite, magnesite and countless other ores. In the field of collection and gemological minerals, Brazil is...of Brazilian mining, with an emphasis on small pegmatite mining ventures, factories of dreams and of illusions...mineral world. Andrea Bartorelli, at the center, in field work, performing research on cassiterite on the...communities that inhabited the vast Brazilian territory, often their only vestiges, which makes them essential |  | | Journal (issue) | | crystals from the Mud Tank Carbonatite, Northern Territory, Australia ......................................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...Had Montgomery become interested in some other field, such as fossil collecting and paleontology, he |
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