 | Wise, Michael A., Harmon, Russell S., Curry, Adam, Jennings, Morgan, Grimac, Zach, Khashchevskaya, Daria (2022) Handheld LIBS for Li Exploration: An Example from the Carolina Tin-Spodumene Belt, USA. Minerals, 12 (1) 77 doi:10.3390/min12010077 | Journal (article/letter/editorial) | | in the field at a historically important CTSB pegmatite locality in Gaston County, N.C. in four contexts:...muscovite and rapidly determine the degree of pegmatite fractionation. This study demonstrates the potential...compositional information for pegmatites during a Li pegmatite exploration program. Academic Editor: Paul Alexandre...distribution and face multiple production challenges. Pegmatite deposits (26%) will, therefore, remain an important...alternative process for the generation of some LCT pegmatite populations [10–12]. Granites parental to LCT |  | | Report (volume) | | ... Grafton district...................................... Alstead area, Keene district................Plate 61. Geologic map of the Alstead area, Keene district , New Hampshire........................ 62. Map...locations of mica and feldspar mines of the Grafton district, New Hampshire .................................locations of mica and feldspar mines of the Keene district, New Hampshire.. Figure 38. Index map of New Hampshire...adjacent to large areas of biotite gneiss. The pegmatite bodies range from a fraction of an inch to more |  | | Book (volume) | | Illinois geology. These measures constitute the Upper Carboniferous system of repeated alterations of...Vanderburgh Co., brought down by glaciers from the Lake Superior Copper regions. Similarly, cubes of Galena...principally in Devonian limestone exposures which outcrop over much of Iowa, being most typical and best... BUTLER COUNTY SHELL ROCK, just N at gravel pit⎯Lake Superior agates. CLAYTON COUNTY AREA, many mines...commercial dredging operations⎯Lake Superior agates; d all regional Cr. beds⎯Lake Superior agates, Quartz crystals |  | | Book (volume) | | Illinois geology. These measures constitute the Upper Carboniferous system of repeated alterations of...Vanderburgh Co., brought down by glaciers from the Lake Superior Copper regions. Similarly, cubes of Galena...principally in Devonian limestone exposures which outcrop over much of Iowa, being most typical and best... BUTLER COUNTY SHELL ROCK, just N at gravel pit⎯Lake Superior agates. CLAYTON COUNTY AREA, many mines...commercial dredging operations⎯Lake Superior agates; d all regional Cr. beds⎯Lake Superior agates, Quartz crystals |  | | Journal (article/letter/editorial) | | crystallization of primary tourmaline from the moment when pegmatite melt was sealed off the host rock. Negligible...concentrations of Mg in secondary tourmaline show that the pegmatite system was closed to the host rocks during the...garnet are related to originally Ca-enriched pegmatite melt contaminated before emplacement. Keywords:...subsolidus alterations, contamination, elbaite pegmatite Received: 13 September, 2017; accepted: 30 May...2008). They demonstrate exsolution of fluids from pegmatite melts; however, the timing of this fluid exsolution |  | | 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...mi. region surrounding this town contains many pegmatite dike minesMica minerals, Quartz crystals, Aquamarine...chalcedony, Kyanite, jasper. POWDER SPRINGS, S 2 mi., outcrop on Turner propertyCorundum. CRISP COUNTY CORDELE...COUNTY smoky). ATLANTA, Emory University, area pegmatite outcropsQuartz crystals (clear, BARNESVILLE |  | | Report (chapter) | | 3 Pegmatites in the Falcon Lake-West Hawk Lake area . Lucy pegmatite. Results of the drill program...program . ..... . .. . . . Artdon pegmatite Subsurface pegmatite on the Alan 27 claim .... .. . . . . . . ....... . .. . Molybdenite pegmatites in the Falcon Lake area . . .. .. . . . . .. . . . . . . . . . . ...... . . Molly and Bendum claim s Deer pegmatite , West Hawk Lake. . . . . . . . . . . . . . . . .. . ... . . Radioactive minerals in pegmatites , Caddy Lake-Telford area . ...... ... Libby claim ........ |  | | Book (volume) | | along the N side of the Platte R. all the way to lake Guernsey, WYagate, petrified wood. NANCE COUNTY...for gems and gemstones: quartz family minerals, pegmatite crystals, Turquoise, agatized and opalized wood...CHURCHILL COUNTY AREA: far E part of Co.: (a) Dry Lake area, on slopes of the Clan Alpine Mts., old camp... line, mining dist. E of Humboldt Lake on W flank of Humboldt Lake Range (extending into Pershing Co...Wonder (Hercules), veins in Tertiary volcanics and lake sedimentsCopper, Gold, Silver and Zinc minerals; |  | | Book (volume) | | prehistoric Indians from lead producing areas of the upper Mississippi Valley. Not a county in Alabama but...and E of the Louisville and Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T...a bed⎯dark yellow ocher. CLAY COUNTY AREA: c pegmatite outcrops in the mica schists, as large platy books...crystals; (e) Coosa and Tallapoosa R. drainage area pegmatite outcrops and numerous old mines⎯Muscovite mica...Rte. 46, starting 1½ mi. E of town: c numerous pegmatite outcrops in area bordered by Crooked Cr. (S) and |  | | Book (volume) | | prehistoric Indians from lead producing areas of the upper Mississippi Valley. Not a county in Alabama but...and E of the Louisville and Nashville RR), area pegmatite outcrops⎯Muscovite mica; d SE Region: (a) B.T...a bed⎯dark yellow ocher. CLAY COUNTY AREA: c pegmatite outcrops in the mica schists, as large platy books...crystals; (e) Coosa and Tallapoosa R. drainage area pegmatite outcrops and numerous old mines⎯Muscovite mica...Rte. 46, starting 1½ mi. E of town: c numerous pegmatite outcrops in area bordered by Crooked Cr. (S) and |  | | Book | | Minor, the Sinai Peninsula, Silesia, and Saxony in Germany. Numerous deposits in Arizona, California, Colorado...phosphorus handbook. Wiley. New York Moore PB (1982) Pegmatite minerals ofP(V) and B(III). Mineral Assoc Can...Mode of Occurrence: Occurs in large masses in pegmatite at several mines in the Custer-Pringle area, Custer...Pennington County, South Dakota. Also found in pegmatite at Chanteloube, France; Buranga, Ruanda; Varutrask...Sukula and Lemnas, Finland; and in several other pegmatite deposits Amblygonite Optical Constants: IX |  | | Report (volume) | | Beryl Deposits of the Beecher No. 3-Black Diamond Pegmatite Custer County South Dakota GEOLOGICAL SURVEY... Beryl Deposits of the Beecher No. 3-Black Diamond Pegmatite Custer County South Dakota By JACK A. REDDEN ...BULLETIN 1072-1 A study of a beryl deposit in pegmatite of the Black Hills, South Dakota UNITED STATES...BERYL DEPOSITS OF THE BEECHER NO. 3-BLACK DIAMOND PEGMATITE, CUSTER COUNTY, SOUTH DAKOTA By JACK A. EEDDEN...EEDDEN ABSTRACT The Beecher No. 3-Black Diamond pegmatite, near Ouster, S. Dak., is one of the most important |  | | Journal (article/letter/editorial) | | Avenue Littleton, Colorado 80122 Four Obscure Pegmatite Mineral Localities in Oxford County, Maine Oxford...dumps of peg matites in the Maine pegmatite belt. The famous pegmatite quarries of western Maine—Mt. Mica...mining of these pegmatite dikes since the 1920s. The excavations are on three parallel pegmatite dikes, striking...or covered by vegetation (thus obscuring the pegmatite mineralogy), the dumps are virtually untouched...M I N E R A L S you reach an angular-shaped pegmatite boulder which stands five feet above the ground |  | | Journal (issue) | | Lieber Heidelberg, W. Germany Olaf Medenbach Ruhr Universitat Bochum Bochum, W. Germany Eric Offermann Arlesheim...Country Australia Canada China Czechoslovakia France Germany Japan Italy Mexico Namibia USSR USA Zaire Total...explorers to the native copper deposits of western Upper Michigan, but it wasn’t until about 1844 that the...at the southwest end of the district. The great native copper belt of Upper Michigan occurs in a series...lava flows and conglomerates known as the Portage Lake lava series. The belt is from 2 to 4 miles wide |  | | Journal (issue) | | I Mine as far back as 2010. The mines in this district are developed in skams and deserve greater scientific...coming months. 4 The Valor Lithium and Cesium Pegmatite Lacorne Township, Abitibi RCM, Quebec, Canada...Jacobson and Donald Doell, Jr. The southern pegmatite (of three) on the former Valor Lithium Mines Ltd...work documented the occurrence of poll ucite on outcrop, along with the previously known spodumene, "lepidolite"'...east of the northern end of Lake Chaptes. In the northern area, an outcrop, 30.5 meters wide by 91.44 |  | | Report (issue) | | connected by smaller streaks or stringers of pegmatite, or by mere seams in the rock. Many of them, on...and may constitute simply a bulge in a sheet of pegmatite. In many places the schistosity of the inclosing...irregularity on the other wall of the pegmatite. It is not uncommon for pegmatite masses to cut across the country...masses included in the hornblende areas. Where the pegmatite is in contact with hornblende gneiss, the latter...them having no visible connection with other pegmatite bodies. They range from a fraction of an inch |  | | Journal (article/letter/editorial) | | Little Gem amethyst mine. It is an imposing pegmatite outcrop about 50 meters long, 20 meters wide, and...that extends for 100 meters downhill so that the pegmatite would have been easily spotted from great distances...mine from the south, across the valley, showing pegmatite exposure and mine workings, June 2016. Note mine...compressor on upper terrace (left center), and skid-steer loader and small excavator on upper bench (center)...Homestake Pass on Interstate-90, and can be reached via Upper Rader Creek Road. Access is by a dirt road that |  | | Book (volume) | | .................................112 Colorado – Lake City Area Site Map .....................................................258 Missouri – New Lead District Map .........................................................325 New Jersey – Franklin Mining District Map ............................................Texas – Fluorite in the Terlingua Quicksilver District .................................455 Texas – Sulfur..................................481 Utah – Clear Lake Area Map ...................................... |  | | Book | | Rocks; Minerals Found in Igneous Rocks; Granite Pegmatite Gems and Minerals; Hydrothermal Mineral Deposits;...Gemstones and Minerals; Volcanic Flows; Values in an Outcrop 4. Preparation for Field Collecting 52 Field... Recently, archaeologists working in the remote Lake Rudolf area of Africa's Kenya found shaped stone...cultural evolution and the possibility of language. The Lake Rudolf implements are some 1,800,000 years older...the Bronze Age in central Europe, the prehistoric Lake Dwellers were boring holes into garnets and stringing |  | | Journal (article/letter/editorial) | | Kanyon Lithium Pegmatites C R Y S T A L MOUNTAIN DISTRICT, LARIMER COUNTY, C O L O R A D O MARK I . JACOBSON...P O D U M E N E occur in the Crystal Mountain district in a group of unzoned pegmatites. These mineralogically...on a cliff on the west side Three subparallel pegmatite veins can be traced for ap proximately 400 feet...schist is a 1/8-inch zone of very fine-grained pegmatite that can be interpreted as a chill zone. Occa-...north of the western albite-quartz-spodumene pegmatite. Sharp contacts with schist are apparent. Location |  | Daneshvar, Narges, Azizi, Hossein, Asahara, Yoshihiro, Tsuboi, Motohiro, Minami, Masayo, Mohammad, Yousif O. (2021) Geochemistry and Genesis of Beryl Crystals in the LCT Pegmatite Type, Ebrahim-Attar Mountain, Western Iran. Minerals, 11 (7) 717 doi:10.3390/min11070717 | Journal (article/letter/editorial) | | Geochemistry and Genesis of Beryl Crystals in the LCT Pegmatite Type, Ebrahim-Attar Mountain, Western Iran Narges...2 July 2021 Abstract: Ebrahim-Attar granitic pegmatite, which is distributed in southwest Ghorveh, western...was directly produced by partial melting of the upper continental crust (UCC). The crystallization temperature...temperature of the Ebrahim-Attar granitic pegmatite changes from 586 to 755 ◦ C (average = 629 ◦ C), as...Geochemistry and Genesis of Beryl Crystals in the LCT Pegmatite Type, Ebrahim-Attar Mountain, Western Iran. Minerals |  | | Report (issue) | | beds and shale of Triassic (?) and Jurassic age, Upper and Lower Cretaceous sandstones, shales, and limestones...Tertiary " badland " formations. 'These formations outcrop at successively greater distances from the central...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 |  | | Report (issue) | | Pegmatite Investigations 1942-1945 Black Hills, South Dakota By LINCOLN R. PAGE and OTHERS GEOLOGICAL...StollKnowles Lode claim._______________^____________ Lake mica prospect by W. C. Stoll and L. R. Page. _ Lofton...pocket] PLATE 1. Index map showing locations of pegmatite mines and prospects. 2. 3. 4. 5. 6. 7. 8. 9....Dakota. Geologic map and sections Beecher Lode pegmatite, Ouster County, South Dakota. Geologic map and...Geologic map and sections,' Elkhorn and Hot Shot pegmatite mines, Custer County, South Dakota. Geology of |  | | Book (edition) | | of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...Colorado at the Pelican Dives m.ine, Silver Plume district, and at the Little Emma mine, Clear Creek County;...Cripple Creek district. It is also found in Canada; Mexico; Bolivia; Czechoslovakia; Norway; Germany; Tsumeb;...Outstanding crystals found in talc near Wenatchee Lake, Chelan County, Washington. ADAMITE Zn2As04(0H)...occurrences are found in Chile, Italy, France, Germany, Turkey, and Algeria. SELECTED REFERENCES: Palache | | | Book (edition) | | of weakness caused by deformation or twinning. pegmatite Very coarse-grained granitic rock representing...Colorado at the Pelican Dives mine, Silver Plume district, and at the Little Emma mine, Clear Creek County;...Cripple Creek district. It is also found in Canada; Mexico; Bolivia; Czechoslovakia; Norway; Germany; Tsumeb;...Outstanding crystals found in talc near Wenatchee Lake, Chelan County, Washington. Adamite Group Adamite-Olivenite...occurrences are found in Chile, Italy, France, Germany, Turkey, and Algeria. SELECTED REFERENCES: Palache |
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