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| : Europe : United I{ingdom 17 Asia : Ceylon, Hong I{ong, India, Federated Malay States, Unfederated...Portugal, Russia, Spain 75 Asia: China, Dutch East Indies, Indo-China, Japan, Siam . 84 Africa : Belgian...sources are Bolivia, the Dutch East Indies, Siam and China. The chief centres of the smelting and relining...centres are those of the Dutch Indies, Germany, China and Australia. Before the war, smelting was carried...Austria-Hungary 24 Bolivia . 22,657 China . . 8,644 Dutch East Indies 19,912 Indo-China 98 Italy . 52 Japan . 1 95 |
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| Corundum-bearing basalts also occur in Cambodia, Viet Nam and China, having a similar age range (Cenozoic) to that in...383-403 Du Toit, A.L., 1918. Plumasite (corundum-aplite) and titaniferous magnetite rocks from Natal. Transactions...titaniferous synthetic beryl. J. Gemmol. Assoc. Hong Kong, 16, 5-6 Cerny, P., and Hawthorne, F.C., 1976...mineral associations within diamonds from the [uina district of Brazil include a previously unrecorded Na-Al-Cvlg...from eclogites in Su Lu UHP metamorphic province, China. Microdiamonds and multicrystalline quartz pseudomorphs |
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| Diabase______________________________________________________ Aplite and alaskite ________________ Apache Group____...Group________________________________________________ Pioneer Formation_ _____________________ ________ ___________...granodiorite, and subordinate amounts of alaskite, aplite, and diabase. The quartz monzonite and granodiorite...coarse-grained deep-seated plutonic rocks. The alaskite, aplite, and diabase form dikes and small irregular intrusives...here consists of the Pioneer Formation and the Dripping Spring Quartzite. The Pioneer Formation comprises |
 | | Journal (article/letter/editorial) |
| little to no meteoric component, as evidenced by the aplite matrix in the breccia and the proximity with the...commodity currently mined in the Questa-Red River district. However, small amounts of gold, silver, and copper...deposits are recognized in the QuestaRed River district. They are aligned on an N 70° E to N 75° E trend...deposit is the site of all historic Mo mining in the district. It has a horseshoe shape and comprises discrete...reserves in the Central deposit. Overall in the district, Mo mineralization occurs in a 17.5-km long zone |
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| MINERAL COLLECTING LOCALITIES OF THE BROKEN HILL DISTRICT I. R. PLIMER Dr Ian Plimer is a lecturer in Geology...Australia by Typecraft Pty Ltd, Adelaide Printed in Hong Kong PREFACE The Broken Hill area is well known...and rock specimens can still be collected in the district. Many visitors as well as local people are interested...mineral and rock specimens from the Broken Hill district and it is my purpose to guide the collector to...for the Broken Hill district Frontispiece Geology of the Broken Hill district 9 Mineral deposits |
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| _______________________ _ Hybrid granodiorite ________________ _ Aplite and pegmatite _______________ _ Hydrothermal alteration...__________ _ Dragoon Mountains ____________________ _ Aplite associated with the Tungsten King granite ____... Scanlan conglomerate _______ - _________ - _ Pioneer shale ____ -------- ___ - ___ ---- __ -_ Barnes..._______ Age___________________________________ Aplite ___ -_________________________________ Litholo...________________________ _ Winchester· district _________________________ _ Yellowstone district ________________________ |
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| paragenesis of the Little Three mine pegmatites, Ramona district, San Diego County, California ..................located on the Little Three property in the Ramona district, San Diego County, California. This mine, strictly...material produced from the Mursinka-Alabashka District, Urals, and the Volyn pegmatites in the Ukraine...Minas Gerais, Brazil, and St. A nne’s mine, Karoi district, Zimbabwe. Fine specimens of dark green elbaite...claim map o f the Little Three mine area. Ramona district (compiled by the F. H. Weber, California Division |
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| assistedby S.S. Philbrick, spent I6 days in the district in the summerof I93o for the United States Geological...summarizesthe characteristicsof the lodesof the district, particularly those in active development at the...the presenttime to point out some featuresof a district that owes its comparativeobscurityin part to inadequateconcepts...L.: Geology and ore depositsof the Lava Creek district, Idaho. Idaho Bur. Mines and Geology,Pamph. 32...rich and readily accessibleplacersthat made the district famous in the sixties have long sincebeen largely |
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| Apache Group____________________________________ Pioneer Shale__________________________________ Thickness..._______________----.. Granophyre.._ _____________-______---_. Aplite. __________________--__---_-----. Mode of formation...of the Pioneer Shale._______________ 6. Photomicrograph of tuffaceous siltstone of the Pioneer Shale....600 feet, and includes, in ascending order, the Pioneer Shale, the Dripping Spring Quartzite, the Mescal...are considered basal conglomerate members of the Pioneer Shale and Dripping Spring Quartzite, respectively |
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| _ Syenite facies______________________________ Aplite facies________________________________ Black deuteric...____ Spotted rocks___________________________ Pioneer Formation__________________________ Mescal Lim...rocks_--Precambrian granite ___________ ----------------Pioneer Formation _____________ ----- __ ---------Dripping...intermediate syenite and culminated by alkalic aplite and a very late stage fernie facies called deuteric...which is believed to be related to the alkalic aplite stage of diabase differentiation. In the area that |
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| stone have been The Pinnacle, The Caledonia, The Pioneer, is chiefly upon the low grade ores of the field...the richer portions. The Homeward Bound and Pioneer Mines have been able some years by treating ore...gold found in Sawpit Gully, 1871. Discovery of Pioneer Claim, 1872. Homward Bound Mine, 1874. Erection...Bound. {b) Eclipse. (r) Pioneer. (d) (e) Caledonian. {h) Usher. (/) Golden Quarry (/) Star, (g) Golden Crown...communication with Nowra. for progress in this district. * Address delivered to Royal Society of N. |
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| Idaho: A Field Guide to the Lost River, White Knob, Pioneer, Boulder, and Smoky Mountains 5 Paul Karl Link...Janecke, and Bradford R. Burton Field Guide to the Pioneer Mountains Core Complex, South-Central Idaho 43...Carrietown Counties, Idaho Silver-Lead-Zinc District, Blaine and Camas Robert S. Darling Vii 193...the Challis volcanic field and the rise of the Pioneer Mountains core complex. The dominant northsouth...Challis magmatic episode, the formation of the Pioneer Mountains core complex, and the present-day hydrothermal |
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| ____-_-_--_--------_--__---_---Albite granite and aplite.-..--------------------------------Structural features...dikes_____________-_-_-_-__------___-_-___-___-_ Pegmatite-aplite relations....___-_-_---_---_-___-__---__-_-_ Line...____________________________________ Gold Butte district, Virgin Mountains__________________________ Virgin...been reported in the Marietta district, Mineral County; the Sylvania district, Esmeralda County; near Crescent...few common minerals. Beryl was not found in any district where it had not already been reported. PREVIOUS |
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| .............................................. Aplite.......................................................... 57 57 58 59 59 60 61 62 62 63 64 64 Quarry methods............... ..........................Consolidated Granite Co. quarry................................ Aberdeen Granite Co. quarry............................................. Anderson Granite Co. quarry.................................. 65 65 66 66........................... 75 United Granite Co. quarry..............;................. 75 Undeveloped |
 | | Journal (article/letter/editorial) |
| other involves a contact aureole of metamorphosed Pioneer argillite (Apache Group). A few samples were also...Quartzvein TX57 TX40 TX50M TX30T 270 0.04(~0.5 PIONEER ARGILLITE Pegrnatite TXta TXId TX59 550 400...samples from the Texas Canyon quartz monzonite-Pioneer argillite contact zone. The notation is similar...2. Sample JL 1 is an unmetamorphosed sample of Pioneer shale from the Johnny Lyon Hills (see Fig. 1)....irregular, gently-dipping contact with metamorphosed Pioneer argillite. A n added complication is t h a t in |
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| No. 61 GEOLOGY OF THE STONE MOUNTAIN-LITHONIA DISTRICT, GEORGIA By Leo Anthony Herrmann ATLANTA 1 9...No. 61, "Geology of the Stone MountainLithonia District, Georgia". This report was prepared by Dr. Leo...__________ . __________________ _ Location of the District .. _________ ·------------------------- __ _ Physiography...Pegmatite dikes _____________________ ·------------Aplite dikes __________________________________ ---·------------...---Block Quarry ___ ----------------------------------------------------------Britt Quarry --------- |
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| 257 34. Idealized diagram of an ore body in the Pioneer workings of the Gold Hill mine.._________________________...third class are fairly well defined veins, but the Pioneer lode of the Gold Hill mine lies along a group of...other mines may disclose lodes similar to the Pioneer. This possibility and the downward continuity of...of the lodes as a whole entitle the district to more extensive exploration, both horizontally and downward...assisted by S: S. Philbrick, spent 16 days in the district in May and June 1930. During this time most of |
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| belongs to the ilmenite series, and pegmatite and aplite veins are accompanied; therefore, its emplacement...and has a maximum 180 mL thickness of 4.0 m. Aplite dyke cuts the wall rock and skarn, as shown in...increases toward the contact with the aplite dyke. The aplite is a pale yellowish-green compact rock...amounts of garnet and clinopyroxene are included in aplite in the vicinity of the contact with the skarn....Marble N Skarn 220 mL 230 mL 190 Hornfels Aplite Fig. 2 (a) Underground geological map and (b) |
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| 1397–1424 Structural Geologic Evolution of the Butte District, Montana Robert A. Houston†,* and John H. Dilles..., Corvallis, Oregon 97331 Abstract The Butte district contains two porphyry Cu-Mo deposits and the younger...southwest Montana. New geologic mapping of the Butte district reveals three distinct episodes of deformation:...that are limited to the northwest part of the district and synchronous with the eruption of the Lowland...produced ~20° of gentle NE tilting (episode I) in the district. The exhumation history of the deposit is therefore |
 | Zhou, Xiaohui, Lin, Shoufa, Anderson, Scott D. (2016) Stratigraphy, structure and lode gold system at the Central Manitoba mine trend, Rice Lake greenstone belt, Archean Superior Province, Manitoba, Canada. Precambrian Research, 281. 80-100 doi:10.1016/j.precamres.2016.05.020 | Journal (article/letter/editorial) |
| Hefei University of Technology, Hefei 230009, PR China c Manitoba Mineral Resources, Manitoba Geological...tonalitic-granodioritic plutons (2.73–2.72 Ga), as well as late aplite dikes (2.73–2.72 Ga) and quartz-feldspar porphyry...was folded during G1 and G2 prior to rare late aplite dike emplacement. All fault-fill veins and extension...feldspar porphyry and aplite dikes (Anderson, 2013a; Zhou et al., 2014). In the district around the Central...Anderson, 2013a). Preliminary U-Pb zircon data of aplite dikes near the Rockland and Ogama mines suggest |
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| The Wallapai Mining District Cerbat Mountains Mohave County Arizona GEOLOGICAL SURVEY BULLETIN 978-E...978-E The Wallapai Mining District Cerbat Mountains Mohave County Arizona By MCCLELLAND G. DINGS CONTRIBUTIONS...ILLUSTRATIONS PLATE 18. Geologic map of Wallapai mining district, Mohave County, Ariz_______-_________________-_-___--------___--...section of Tennessee-Schuylkill mine, Wallapai district, through Tennessee and Schuylkill shafts, with...gold, silver, copper, lead, and zinc in Wallapai district, 1904-48___________________________...__-_ 2. |
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| The tungsten area adjoins a rich agricultural district. The tungsten deposits were briefly examined by...larger than are common in the ore bodies of the district, but it must be said that the scheelite is neither...the tungsten-bearing deposits. Narrow dikes of aplite also occur at some places. Scattered through the...is the only occurrence of the kind noted in the district, and none is found in the tungsten ore bodies...mass in which the largest tungsten deposit of the district is inclosed. iSuch rocks are commonly called "lime-silicate |
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| Lucking collection, p. 78 5 36 86 Chips from the Quarry Connoisseur's Choice: Topaz from Granite Pegmatites...Limoeiro Mine, Virgem da Lapa, Ara~uaf Pegmatite District, . Minas Gerais, Brazil, Michael A. Menzies Signature...5 cm, Limoeiro mine, Virgem da Lapa, Ara<;uar district, Minas Gerais, Brazil; private collection, Jeff...column beginning on page 36. Chips from the Quarry T UCSON: In trying to come up with a new way...Gerais, Brazil; C: Aquamarine, 6.5 x 14.1 cm, Pioneer mine, Minas Gerais, Brazil; D: Elbaite, 8.9 cm |
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| leucogranite Other intrusive bodies Pegmatite and aplite dikes Economic significance __ ____ Cretaceous...88 88 88 89 89 district Mesa Grande district __ Ramona district Rincon _ district Other areas Miscellaneous...96 96 97 97 115 116 . _ Gold District summaries Julian district Escondido region Mesa Grande ... Dulzura 121 121 district (Rice) district Ballena placer deposits Additional gold mines Boulder Creek...20 121 district Montezuma 16 1 121 district Area south of Pine Valley El Cajon district Laguna |
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| quartz monzonite.-------------.-------------------Aplite -__--___--..__-___-__--_-_-__-------------------_...of the replacement lodes in the Coeur d'Alene district at the other end of the State, but the outlook...deposits in Boise Basin. Field studies in the district were started the latter part of June 1932 and...of the ore deposits in the Pearl-Horseshoe Bend district WaS begun and finished within the month. During...GEOLOGIC WORK A summary of previous work in the district is given in the publications included in the bibliography |
