 | | Book (volume) | | Mineralogy by Vandall T. King and Eugene E. Foord Maine Geological Survey DEPARTMENT OF CONSERVATION Walter...Resources Information, Maine Geological Survey Walter A. Anderson, State Geologist Maine Geological Survey...DEPARTMENT OF CONSERVATION 1994 Copyright ©1994 by the Maine Geological Survey, Department of Conservation. All...Cover photograph: Fluorapatite, Pulsifer quarry, Auburn, Maine (2.2 cm specimen), Harvard Mineralogical...Wendell E. Wilson, ©1985. The laws and policies of Maine and the United States prohibit discrimination in |  | | Book (volume) | | 0 n101ercai o of Maine j f·~ ....__ :,,. . - .._"' ..;. .. ~ L-- -~ \. • .J_..::.; I Volume...History, Gems, and Geology edited by Vandall T. King Maine Geological Survey DEPARTMENT OF CONSERVATION Robert...Robert G. Marvinney, State Geologist of Maine Volume 2: Mining History, Gems, and Geology Edited by...Resources Information, Maine Geologi,cal Survey Robert G Marvinney, State Geologist Maine Geological Survey...DEPARTMENT OF CONSERVATION 2000 Copyright ©2000 by the Maine Geological Survey, Department of Conservation. All |  | | Journal (article/letter/editorial) | | arch of the Palermo mine, North Groton, Grafton County. Rob Lawrence photo, courtesy Bob Whitmore. 242...at 15:01 05 January 2015 LOCATIONS BY COUNTY Belknap County Alton area: arsenopyrite, galena, quartz...occurrence is particularly noteworthy for Carroll County Albany, Blackberry Crossing (includes the Moose...tall, Government Gravel pit, North Conway, Carroll County. Jeff Scovil specimen and photo. Downloaded by...tall, Middle Moat Mountain, North Conway, Carroll County. Canadian Museum of Nature specimen, Jeff Scovil |  | | Journal (issue) | | acting caretaker of the San Pedro Mine in Santa Fe County, and along with his son Phillip is actively exploring...during the last year: a presidential election in the USA, more lands closed to public use, mineral localities...News, P.O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-664-2448 Email: lanny @mineralnews.com...grow to around J t/4 inches (3 cm). The Chavan Quarry (W agho li. 12 miles (20 km) east of Pune (Poona)...and less green than s pecime ns from the Dhoot Quarry, producing the first Indi a n specimens. The crystal |  | | Book (edition) | | describes sites under of the nearest town and county. and the many maps included book contain such...from Alaska to the Mexican border and eastward to Maine and Florida. Still others are to be found in Canada...in cavities in the dike. Such pegmatite dikes in Maine, Connecticut, New Hampshire, North Carolina, South...affording a challenge to the collector, especially in Maine, New Hampshire, Connecticut, New Jersey, Virginia...to visit in the summer. winter comfortable in Maine or Montana. In hot is more comfortable morning |  | | Journal (issue) | | News, P.O. Box 2043, Coeur d'Alene, ID 83816-2043 USA Phone: 208-664-2448 E-mail: lream@comtch.iea.com...feldspar. The locality, I believe, is a granite quarry. I have been told that, at the site, the large...Fifties, i.e. chiastolite crystals from Madera County, CA. They used to be very common, almost ubiquitous...Manhattan, NV, from the Twin Creek Mine, Humboldt County, NV. The crystals are about 3/g to 5/g inch (1...with fresnoites from the Junnila Mine, San Benito County, CA, which he described in the Mineral News of |  | | Book (edition) | | MARIN COUNTY FREE LIBRARY 3 1111 00289 4184 \ I s Fifth Revised Edition A complete, state-by-state...on the gem resources of our land. "Do you, Mr. Maine," he continued, "know that some of the finest tourmalines...from Alaska to the Mexican border and eastward to Maine and Florida. Still others are found in Canada and...strike gem tourmaline by the bushel basketful in Maine and California; emerald in North Carolina, a big...all challenge to the collector, especially in Maine, New Hampshire, Connecticut, New Jersey, Virginia |  | | Journal (article/letter/editorial) | | Southern Methodist University, Dallas, Texas, 75275, USA ABSTR ACT I will consider mainly geothermobarometry... and sillimanite-bearing rocks of west-central Maine all fall in the sillimanite field. Preliminary biotite...mica, sillimanite, staurolite, metamorphism, Maine, USA. Introduction I thank the Mineralogical Society...*Present address: 855 Elliott St., Longmont, CO 80501, USA { Hallimond Lecture, 2002 DOI: 10.1180/0026461046810167...in only a few specimens. In many respects, the Maine metamorphism is ideally suited for calibration and |  | | Journal (issue) | | fonner Martha Philinda Fletcher, was born November 3, I 853 in Fairfield, Ohio (Fletcher I 88 I, p. 44 I)....other siblings were Charles Henry (b. I 850), John Fletcher (b. 1856), Walter (b. I 859), Mary Ella (b. 1866)...1977, Geology and Mineral Deposits of Pershing County, Nevada, Nevada Bureau of Mines and Geology, Bulletin...Miocene Diatomite, Trinity Pass Area, Pershing County, Nevada, U.S. Geological Survey, Open-File Report...Reconnaissance of Mining Districts in Pershing County, Nevada, U.S. Bureau ofMines Lnformation Circular |  | | Journal (article/letter/editorial) | | exchange reaction; ~Fe3A12Si30~2+ MnTiO3 =89 almandine pyrospessartine phanite + FeTiO3 ilmenite (l)...minor positive deviations from ideality along the almandine-spessartine join with an interaction of about...mediummetamorphic grade, garnets are essentially almandine-spessartine solid-solutions with pyrope, grossular...mixing of almandine and pyrope as an asymmetric solution with the greatest non-ideality for almandine-rich...high-grade assemblages are generally in excess of 70% almandine plus pyrope components. Fortunately, in most low-grade |  | | Journal (article/letter/editorial) | | ofPttrdogy, Vol. 27, P»i1 5, pp. 1025-1034, 1986] C Oxford UHITCTUIT PTCH 1986 Downloaded from http://petrology...phases, garnet of composition Grossular 33 . 3 -Almandine 66 . 7 (Gr1A\m2), ilmenite and rutile, were prepared...crystal spectrometers. Well-analysed, natural almandine-rich and grossular-rich garnets, ilmenite and...taken to indicate 'no reaction'. grossular + 2 almandine + 6 rutile = 6 ilmenite + 3 anorthite + 3 quartz...reaction as a result of the free energy of mixing of almandine and grossular in the Ca-Fe garnet. The 1 1 a |  | | Report (issue) | | fossiliferous rocks in the Merrimack Synclinorium in Maine and the Bronson Hill Anticlinorium in New Hampshire...Rocks underlying the Merrimack Synclinorium in Maine range in age from Ordovician to Devonian and consist...extrapolated the fault into the Casco Bay area of Maine. It was named the Wekepeke Fault in the Clinton...Lawrence that strike into Kittery, York, and Eliot, Maine. Hitchcock (1877, Plate XXIII, Fig. 98) included...rocks from Nashua, New Hampshire, to southeastern Maine the Merrimack Group, containing subdivisions of |  | | Journal (article/letter/editorial) | | relation: 3 ilmenite * sillimanite + z quartz s almandine + 3 rutile. The reaction boundary was located(+0...equilibrium: 3 ilmenite + Al2SiOs * 2 qtartz = almandine* 3 rutile difficultto investigateexperimentally...relative stabilities of ilmenite-Al2SiO5-quartz and almandine-rutile as a function of pressureand temperature...togetherwith synthetic rutile, ilmenite, and almandine were used for starting materials.The quartz was...preparedusing two different starting materials, a glassof almandine composition, and a mixture of appropriate molar |  | | Book (volume) | | fabulous tourmalines and kunzites of California and Maine, the sparkling sapphires of Montana, and the...Kobuk jade locality. Descriptions of San Diego County, California, gemstones and the mines in which they...the generous assistance of many residents of that county. My special thanks are extended to Elbert H. McMacken...164 165 169 171 Four Himalaya crystals and one Fletcher crystal (color) following 112 172 Zoning in tourmaline...Mt. Mica Largest crystal from Mt. Mica Eh Towne Quarry 180 Tourmaline Queen Mountain IgI Tourmaline crystal |  | | Journal (article/letter/editorial) | | spessartinegarnet is stable at much lower temperatures than almandine-garnet, as low as 415°C at 3 kbar. Hence, low-grade...Fe-celadonite = Fe3A12Si3012+ 3 KMgA1Si4010(OH)2. almandine Mg-celadonite. The equilibrium constant (K,)...thermometry was possible. Data were taken from Fletcher & Greenwood (1979, nine samples), Novak & Holdaway...only the higher grade compositions were used. Fletcher & Greenwood (1979) gave the extremes for a range...used. 300 A . Hynes & R.C. Forest Data of Fletcher & Greenwood (1979) are from the Penfold Creek |  | | Report (issue) | | as the pioneer in the geology of west-central Maine, for his expertise on the mineralogy of pegmatites...paleontology: two on the Merrimack Synclinorium in Maine and three on the so-called Pennsylvanian basins...(prehnite-pumpellyite) metamorphism in Massachusetts and Maine, respectively, are the subjects of two of the...nickeliferous pyrrhotite deposits of southeastern Maine, gravity studies of the New Hampshire Plutonic Series...polymetamorphism in the Merrimack synclinorium of western Maine ....... Robert H. Moench and Robert E. Zartman |  | | Journal (article/letter/editorial) | | near Quesnel Lake, British Columbia byC. J. N. FLETCHER* andU. J. GREENWOOD University of British Columbia...the reduced activity of H 2 O. 744 C. J. N. FLETCHER AND H. J. GREENWOOD \ Quesnel Lake Area Fio...1963, 1970), K. V. Campbell (1971), and C. J. N. Fletcher (present work). Downloaded from http://petrology...April 18, 2015 PEMFOLO CKU.K AREA C. J. N. FLETCHER AND H. J. GREENWOOD 746 very narrow zone; only...York University on April 18, 2015 750 C. J. N. FLETCHER AND H. J. GREENWOOD Metamorphic framework and |  | | Journal (article/letter/editorial) | | minerals found in Ver mont slate. Figure 2. Slate quarry, Poultney; photo by Roger Bacon. The granite industry...decorator tiles. The Belvidere Mountain quarry, Low ell (Orleans County) is the most signifi cant locality...producers. The nearby hamlet of Eden Mills (Lamoille County) is the commonly given but incorrect name for the...the locality; it is near er to the quarry than the village of Lowell and is the last set tlement seen...locality from the south. The Belvidere Mountain quarry has produced worldclass crystals of grossular (the |  | | Journal (article/letter/editorial) | | Natural His tory in New York City, the Los Angeles County Museum of Natural History, and the Harvard Mineralogical...very little has been written on the reFigure 1: Almandine, 2.15-carat emerald cut, Turner mine, Marlow;...reported to exist in cut or rough form. Gemstones Almandine, the common species of garnet in New Hamp shire...such location of gemmy almandine is the Turner mine in Marlow, Cheshire County, from which a 2.15-carat...the Charles Davis mine in North Groton, Grafton County, sev eral gemmy orange beryl crystals were found |  | | Book (edition) | | abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture), dept...always included in text, except in the cases of the USA, UK, and the provinces Ontario and Quebec in Canada...Uintah County. Utah. and m (2.B. acanthite group). Monoclinic, C2/m, a,b,c Rio Blanco County. Colorado...Menzenschwand Scbwarzwald Mts., in the Sailauf quarry, Spessart Mts., Bavaria. both Germany, and from...to Hot Springco., Arkansas, in the Point of Rock quarry, pearly. Clea,·age {001} perfect. {100} and {010} |  | | Book (volume) | | cut purplish pink elbaite tourmaline (30.89 ct), Maine; round brilliant red-orange spessartine garnet (16...Colorado; colorless scheelite (19.66 ct), Kern County, California; octagonal step cut violetish pink...Vivid blue matched benitoite gems from San Benito County, California, consisting of 52 benitoites and 75...Cantlin, Ellis, [D; Jeannette B. Carillo, Gem Center USA, EI Paso, TX; Gary Christopher, The Prospectors Cache...Resources, Vancouver, BC; Barbara L. Muntyan, Ouray County Historical Society, Ouray, CO; Merrill O. Murphy |  | | Journal (article/letter/editorial) | | 1017/S0016756808005293 Printed in the United Kingdom Almandine garnet phenocrysts in a ∼ 1 Ga rhyolitic tuff...Sciences, Indiana University, Bloomington, IN 47405, USA (Received 23 October 2007; accepted 17 January 2008;...Abstract – We report on the newly discovered almandine garnet phenocrysts in rhyolitic ignimbrites (Sukhda...indicative xenoliths or xenocrysts, that these almandine garnets (Al78.7 Py12.3 Gr7.4 Sp1.6 ) are phenocrysts...Sukhda Tuff. Almandine of such composition is stable under high pressure. We infer that almandine crystallized |  | | Journal (issue) | | Explore our Website! June Program: The Estes Quarry in Maine In this issue … Mineral of the month: Scorodite...Douglas E. Rambo, P.G. The Estes Quarry, West Baldwin, Cumberland County, ME: A Relatively New Pegmatite...Pegmatite Phosphate Mineral Locality in Southwestern Maine Scorodite is in the orthorhombic mineral system....green or blue colors. June 27 Program The Estes Quarry in West Baldwin, ME, is a recent find among collectors—especially...Pluton, which is the principal source of the major Maine pegmatites (such as Newry, Paris, Greenwood, Auburn |  | | Journal (article/letter/editorial) | | Hewitt, 1973; Burt, 1974; Carswell et al, 1974; Fletcher & Hofmann, 1974; Joesten, 1974; Morgan, 1975;...assemblage in the samples under study: cordierite-(almandine)-(hercynite or biotite)-K-feldspar-plagioclas...hercynite in association with cordierite and almandine garnet does not depend on ZnO (Loomis, 1976, pp...function of the diffusion constant for pyrope-almandine exchange and time of metamorphism. In addition...sillimanite-potash feldspar isograd in western Maine, USA. Ibid. 12, 25-62. FISHER, G. W., 1970. The application |  | Wu, Chun-Ming, Wang, Xin-She, Yang, Chong-Hui, Geng, Yuan-Sheng, Liu, Fu-Lai (2002) Empirical garnet–muscovite geothermometry in metapelites. Lithos, 62 (1) 1-13 doi:10.1016/s0024-4937(02)00096-8 | Journal (article/letter/editorial) | | ðOHÞ2 ¼ Fe3 Al2 Si3 O12 þ 3KðMgAlÞSi4 O10 ðOHÞ2 almandine ð1Þ Mg celadonite At equilibrium, the Gibbs... 2001), the ratio of activity coefficient of almandine and pyrope in garnet, on the three-ion basis,...Pigage (1982), C87 = Clarke et al. (1987), FG79 = Fletcher and Greenwood (1979), H88 = Holdaway et al. (1988)...metamorphism in the Snow Peak area, northern Idaho, USA. Considering that the Prichard Formation (from which...garnet. Contrib. Mineral. Petrol. 66, 113 – 117. Fletcher, C.J.N., Greenwood, H.J., 1979. Metamorphism and |
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