 | Mogessie, A., Hauzenberger, Ch. A., Hoinkes, G., Felfernig, A., Stumpfl, E. F., Bjerg, E. A., Kostadinoff, J. (2000) Genesis of platinum-group minerals in the Las Aguilas mafic-ultramafic rocks, San Luis Province, Argentina: textural, chemical and mineralogical evidence. Mineralogy and Petrology, 68 (1) 85-114 doi:10.1007/s007100050005 | Journal (article/letter/editorial) | | University of Graz, Austria Institute of Geosciences, Mining University of Leoben, Austria 3 Departmento...rocks occur in (1) unaltered orthopyroxene-rich, plagioclase- and spinelbearing rocks which carry abundant...rocks are quartz feldspar and tourmaline rich pegmatite veins striking in the same NNE direction. Recent...analysis at the Institute of Mineralogy, University of Graz. Silicate mineral analyses were carried out with...olivine chrome spinel BMS amphibole plagioclase phlogopite PGM and accessories such as apatite |  | | Journal (article/letter/editorial) | | chemistry and Sm–Nd age correlation of magmatic pegmatite garnet overprinted by eclogite-facies metamorphism...University of Vienna, Althanstr. 14, A-1090 Vienna Austria Institute of Mineralogy and Petrography, University...University of Innsbruck, Innrain 52, 6020 Innsbruck, Austria Accepted 17 January 2007 Abstract Meta-pegmatites...relationships with other pegmatite minerals indicate that garnet crystallized during pegmatite emplacement. Whole...though continuous garnet crystallization during pegmatite-emplacement. This was supposedly related to low |  | | Journal (article/letter/editorial) | | University of Vienna, Althanstrasse 14, A-1090 Wien, Austria Institut für Mineralogie und Petrographie, University...University of Innsbruck, Innrain 52, A-6020 Innsbruck, Austria a r t i c l e i n f o Article history: Received...al., 2001, modified) and some dated (meta-)pegmatite outcrops. SI = Silvretta; EW = Engadine window; Ötz...t)-bearing garnet(Grt)–mica schist, biotite–plagioclase(Bt–Pl)-rich mica schist, amphibolite, Mn-rich...ilmenite, graphite, apatite, monazite and zircon. Plagioclase is notably absent. The garnet pophyroblasts are |  | | Journal (article/letter/editorial) | | http://www.tandfonline.com/loi/tigr20 Gabbro-pegmatite ophiolite complex of Armenian Soviet Socialist...cite this article: S.B. Abovyan (1965) Gabbro-pegmatite ophiolite complex of Armenian Soviet Socialist...tandfonline.com/ page/terms-and-conditions Gabbro-pegmatite ophiolite complex of Armenian Soviet Socialist...characteristic pyroxene-plagioclase ratios. Contact characteristics of certain types of pegmatite veins are noted... It is noted that gabbro-pegmatite composition is dominated by plagioclase feldspars, pyroxenes, and |  | | Journal (article/letter/editorial) | | Minerals of the PACOIMA PEGMATITE Los Angeles County, California Downloaded by [New York University]...attract collectors to this southern California pegmatite. WILLIAM P. MOLLER 627 Grove Lane Santa Barbara...UNUSUALLY LARGE ALLANITE crystals occur in a pegmatite that crops out in Pacoima Canyon only a few miles...found irregularly distributed throughout this pegmatite in pods and lenses of perthite. The crystals are...the west end of the pegmatite exposure. Figure 1. Pacoima Canyon pegmatite outcrops, as viewed from west |  | | Report (issue) | | ____ Palermo No. 1 mine________________ Keene district.__________________________ Beryl Mountain mine...Page Description of pegmatites Continued Raymond district--_________________ General geology.__________-_-_...Geologic map and sections of the Chandler mine (pegmatite 7), Raymond, Rockingham County, l\.fl. Geologic...Raymond, Rockingham County, N.H. Geologic map of pegmatite 37, Raymond, Rockingham County, N.H. Geologic...Geologic map of the Smith No. 3 prospect (pegmatite 49), Raymond, Rockingham County, N.H. Geologic map of the |  | | Journal (article/letter/editorial) | | PIDOTE from the Calumet Iron Mine in the Turret District, Salida, Colorado The Calumet iron mine is one...County, Colorado. It is located in the Turret district within the San Isabel National Forest, in the...deteriorates near the mine where numerous pegmatite outcrops can be seen. The Calumet mine, at an elevation...position, in volume percent, is quartz 9-20%; plagioclase 45-55%; orthoclase 9-18%; biotite 2-12%; augite...alteration of primary ironrich minerals and plagioclase into epidote and calcite. Crystals of fibrous |  | | Book | | Poisons and Venomous Bites, Pregnancy, 127 Austria, Vision and Diseases of the Epilepsy, 124 Russia...Treatment for Cabochons, Australia, 363 331 Austria, Beryl Carvings, 332 Faceted Gems, and Gems...Dr. K. CA; Milton Switzerland; Hans Stern, Austria; the United States and its several branches and...library at Res- CA; Victoria and Albert Mu- Austria; David P. Wilber, Fallbrook, AZ; and Miriam and...colored varieties tens they form distinctive outcrops which could have been discovered gem known |  | | Book | | Rocks; Minerals Found in Igneous Rocks; Granite Pegmatite Gems and Minerals; Hydrothermal Mineral Deposits;...find throughout the region, especially in the pegmatite intrusions (dikes) of New England, New Jersey...found in veins, dikes, stream gravels and benches, outcrops, and as "float" over the widespread lower surfaces...the heart of the then most prolific metal-mining district of central Europe, and although he did not enjoy...differing types of mineralizations, not only surface outcrops but deeply buried concentrations. He is trained |  | | Report (issue) | | the early 1900's, the original Encampment mining district was an important base-metal producer, encompassing...encompassing more than 2,500 mines and prospects. The district comprised 25,000 mi2, including the study area...Mountains and south into Colorado. Within the district, massive suifide deposits occur in Archean rocks...presently accepted Encampment mining district. Total production of the district is not known, but it probably...Wyoming, nearly all from the original Encampment district (Hausel, 1986). In southern Wyoming, small mines |  | | Report (issue) | | central core of metamorphic rocks, and some of the outcrops form hogbacks with the scarp toward the center...whether to classify the rock as granite or pegmatite. The pegmatite occurs both in the metamorphic rocks and...muscovite mica of commercial value is found in pegmatite. In this rock mica occurs as an accessory mineral...less prominence, the essential constituents of pegmatite being feldspar and quartz. The feldspars are commonly...though a plagioclase, albite, or oligoclase is present in some pegmatites, and locally plagioclase is the |  | | Report (issue) | | This 24 cm wide "schorl" specimen from Tyrol, Austria was part of the Gigot D'Orcy collection and is...of which was the unification of the various plagioclase feldspars into a series as early as 1864, although...earlier formed gem quality crystals in many pegmatite pockets. Though the tourmaline group now consists...streak: yellow-brown; luster: vit district Corinthia in Austria and Slovenia, dravite is a reous to...(OH) Named after the discovery location in a pegmatite on the island of Elba in Tuscany, Italy, elbaite |  | | Report (issue) | | 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 ______ |  | | Book (volume) | | Murphrees Valley, as a narrow strip of scattered outcrops about 5 mi. long⎯Manganese minerals. CALHOUN...area⎯Barite. CHEROKEE COUNTY CENTRE, area Miocene outcrops⎯tektites (dark green and dark blue tektites have...of the Louisville and Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T. Childers...in the United States CLARKE COUNTY AREA, vein outcrops along county roads⎯chert (resembles chalcedony)...bed⎯dark yellow ocher. CLAY COUNTY AREA: c pegmatite outcrops in the mica schists, as large platy books |  | | Book (volume) | | Murphrees Valley, as a narrow strip of scattered outcrops about 5 mi. long⎯Manganese minerals. CALHOUN...area⎯Barite. CHEROKEE COUNTY CENTRE, area Miocene outcrops⎯tektites (dark green and dark blue tektites have...of the Louisville and Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T. Childers...in the United States CLARKE COUNTY AREA, vein outcrops along county roads⎯chert (resembles chalcedony)...bed⎯dark yellow ocher. CLAY COUNTY AREA: c pegmatite outcrops in the mica schists, as large platy books |  | | Book (volume) | | pans. Many other gem crystal species occur in pegmatite exposures, such as Aquamarine, Beryl, some Ruby-red...areaAlmandite garnet; (g) harmony Church, area pegmatite outcropsBeryl; (h) Hickory Flat, 2 mi. NE on rd....mi. region surrounding this town contains many pegmatite dike minesMica minerals, Quartz crystals, Aquamarine...smoky). ATLANTA, Emory University, area pegmatite outcropsQuartz crystals (clear, BARNESVILLE, THOMASTON...NW of the Covington hwy. on the Philips rd., a pegmatitegreen Muscovite, Feldspar, Quartz. STONE MOUNTAIN: |  | | Book (volume) | | ......................258 Missouri – New Lead District Map .........................................................325 New Jersey – Franklin Mining District Map ............................................Texas – Fluorite in the Terlingua Quicksilver District .................................455 Texas – Sulfur..............502 Vermont – Orange County Copper District Site Map ...................................503...Murphrees Valley, as a narrow strip of scattered outcrops about 5 mi. longManganese minerals. CALHOUN |  | | Book (volume) | | which also produced a most remarkable series of pegmatite dikes ranking with those in Maine and Southern...Hills Dist. Includes both Veins and the extensive pegmatite dike exposures and mines. BON HOMME & CHARLES...Alt. 16 for 15 to 17 mi. (near Rte. 79), pegmatite outcropsRose Quartz; S along US 385 for 32 mi....Co., all regional side rds., look for limestone outcrops and ridgesFairhill agates; in Bull Moose mine...Spodumene, blue-green Tourmaline; Gayle Royal Flush pegmatite, 5.9 mi. SE Amblygonite. FAIRBURN: NW about |  | | Book (volume) | | also quarried a rough, porous flintstone from outcrops, especially around McArthur, Vinton Co., for making...Bolivar to Zoar Station, as nodules in limestone outcrops⎯flint. VINTON COUNTY AREA: c Swan Twp., on Upper...McCloud on Rte. 62 to Crater Lake: (a) area basalt outcrops⎯Natrolite; (b) draws, washes, slopes, etc.⎯Quartz...gem Corundum crystals are still gathered from pegmatite exposures in these counties. Mountain stream gravels...States FEASTERVILLE: c area outcrops⎯sunstone; d Triassic rock outcrops: (a) S and SE of Holland Sta |  | | Book (edition) | | PARADISE I Bancroft and Region l Old Mines Quarries Outcrops Roadcuts '· Maps • .• ·' f J : .... !...numerous abandoned mines, quanies, roadcuts and outcrops that contain dozens of varieties of minerals....body of granite and amphibolite. Bancroft and District Mineral Collecting Guidebook, p. 12 AMER ICAN...once-successful mine is the pit. Bancroft and District Mineral Collecting Guidebook, p. 34; Touring the...diopside and phlogopite bearing marble. Bancroft and District Mineral Collecting Guidebook, p. 6 BURGESS MINE |  | | Report (volume) | | are composed essentially of perthite, quartz, plagioclase, and muscovite. The common accessories are tourmaline...'EOONOMDC GEOLOGY plagioclase feldspar: those with less than 40 percent of plagioclase, with and without...beryl; and those with more than 40 percent of plagioclase, with and without beryl. About 42 percent of...40 percent plagioclase, and 58 percent of them contain less than 40 percent of plagioclase. Most of the...similar to the main part of the body. This type of pegmatite is of limited economic value. About 25 percent |  | | 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 |  | | Journal (article/letter/editorial) | | fractionation in country rocks of the Tin Mountain pegmatite Fang-Zhen Teng ⁎, William F. McDonough, Roberta...(amphibolites and schists) of the Tin Mountain pegmatite show systematic changes with distance to the contact...dramatically along a ∼10 m traverse from the pegmatite into amphibolite, with Li concentration decreasing...−19.9. Rubidium and Cs also decrease from the pegmatite contact into the country rock, but only within...concentrations remain constant. Neither mixing between pegmatite fluids and amphibolite, nor Li isotope fractionation |  | | 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...LIS'J' OF ILLUSTRATIONS CHAPTER I. iii iv PEGMATITE . . . . . • • . . . . . . . . . . . . . . . ....110, 15th Dist., DeKalb County, Ga., showing pegmatite dike in mica schist Frontispiece PLATES FACING... . . . . . . . . . . . . . III. A. Irregular pegmatite dike cutting biotite gneiss (Carolina), roadside |  | | Book (volume) | | also quarried a rough, porous flintstone from outcrops, especially around McArthur, Vinton Co., for making...Bolivar to Zoar Station, as nodules in limestone outcrops⎯flint. VINTON COUNTY AREA: c Swan Twp., on Upper...McCloud on Rte. 62 to Crater Lake: (a) area basalt outcrops⎯Natrolite; (b) draws, washes, slopes, etc.⎯Quartz...gem Corundum crystals are still gathered from pegmatite exposures in these counties. Mountain stream gravels...States FEASTERVILLE: c area outcrops⎯sunstone; d Triassic rock outcrops: (a) S and SE of Holland Sta |
|
