 | | Journal (article/letter/editorial) | | The gemmy, intense purple apatites from this pegmatite mine have made Pulsifer the premier locality for...County, Massachusetts. Rather than a granite pegmatite, the geological environment in which this specimen...pericline variety of albite, calcite, epidote, muscovite, quartz, titanite, chabazite, and stilbite. Another...” 5.6 cm tall, Alchori, Shigar Valley, Skardu district, GilgitBaltistan, Pakistan. Private collection...Scovil photo. Figure 5 (right). Fluorapatite and muscovite, 15 cm tall, Brumado, Bahia, Brazil. Fine Minerals |  | | Report (issue) | | Addresses Right: Aquamarine Rough from Marijao, Madagascar is sorted in a workshop in Idar-Oberstein, Germany...William "Skip" Simmons and Alexander Falster, pegmatite specialists from the University of New Orleans...pegmatites. Most ore beryl occurs in massive pegmatite zones where crystals may reach considerable size...can be found adjacent to the core margin of the pegmatite and in Suggested Chromophores for Beryl Color-generating...Assun�io, Portugal. Pegmatites at Mahajamba, Madagascar have yielded beryl crystals to lengths of 3 meters |  | | Journal (article/letter/editorial) | | Mines and Minerals of the California Pegmatite Province Downloaded by [Pennsylvania State University]...of the past century, the Southern California pegmatite province has been the source of some of the world’s...(bottom left page). Map of the Southern California pegmatite province, including location of major specimen-producing...variety aquamarine, 6 cm tall, on albite and muscovite, Audrey Lynn claim, Cahuilla Mountain, Riverside...Geology and Geography The Southern California pegmatite province is a mountainous, semiarid region located |  | | Journal (issue) | | ................................. 2 Himalaya pegmatite,...................................................................................... 2 Unnamed pegmatite occurrence, Volcan Mountains ....................................... 3 Brown Derby no. 1 pegmatite ............................................................................... 3 Ridgefield pegmatite,............................................................................... 3 Strickland pegmatite, ............................................ |  | | Journal (issue) | | CONTENTS Page Feature Articles: The Coolgardie pegmatite field, Western Australia Mark I. Jacobson ......Mineralogy Vol 3, No 2, December 1997 %e Coo(gardie Pegmatite :fie[� 'Western .9Lustrafia Mark I. Jacobson Chevron...70593 California, USA This n otable Australian pegmatite locality has produced a range of lithium minerals...the Western Australian outback, an abundance of pegmatite fields stretch from the fiercely hot and arid...Cattlin Creek pegmatite field,near Ravensthorpe in the south. The Coolgardie pegmatite field, near the |  | | Journal (article/letter/editorial) | | hambergite, danburite, and axinite from three pegmatite dikes (named Main, US Swamp, and Spessartine)...pocket mineralogy includes foitite, spessartine, muscovite, axinite, danburite, and rare beryl. The thicker...patterns of δ11BTur from margin-to-core of each pegmatite attest to a negligible fractionation of boron...only the bulk isotopic US composition of the pegmatite-forming melts. KEYWORDS AC CE PT ED M AN...influx of fluids from the host rock into the pegmatite (Trumbull et al., 2013). 3 ACCEPTED MANUSCRIPT |  | | Journal (article/letter/editorial) | | variety aquamarine with spessartine on albite and muscovite, 11.5 × 11.0 × 7.0 cm, Haramosh Mountains, Pakistan;...Etched beryl variety aquamarine, with spessartine, muscovite, and feldspar, 9.9 × 5.5 × 5.1 cm, Dassu, Shigar...textural, and mineralogical attributes of a layered pegmatite dike from near Palomar Mountain, San Diego County...in composition, and for convenience, the term pegmatite will refer to those of granitic composition in...generally highest in white micas (e.g., mostly muscovite in composition), which contain up to 10 ppm Be |  | | Journal (article/letter/editorial) | | beryllium and the crustal Be cycle from migmatite to pegmatite JOSEPH M. EVENSEN*†and DAVID LONDON School of...compatible in plagioclase of An31 (1.84 at 700°C) and muscovite (1.35 at 700°C) but incompatible in biotite (0...case of plagioclase of An31 (0.89 at 700°C), muscovite (0.87 at 700°C), biotite (0.18 – 0.08 from 675–...minerals, cordierite, calcic oligoclase, and muscovite (in this order) control the fate of Be because...the final stages of the petrogenesis of granite–pegmatite systems. In combination with reported data on |  | | Journal (article/letter/editorial) | | throughout the Wausau complex. I n the massive pegmatite, it commonly forms brown prismatic crystals surrounded...Texas 77479. Recent quarrying at the Little Patsy pegmatite has led to the discovery of fluocerite-(Ce), (Ce...(Ce,La)F . The Little Patsy quarry pegmatite is a well-zoned, vertical pipelike body with a circular...Chalet Place, Huber Heights, Ohio 45424. The pegmatite district of central Connecticut, commonly referred...early 1900s through the 1940s— quarries within the district, such as Strickland and Gillette, were highly |  | Kampf, A. R., Adams, P. M., Kolitsch, U., Steele, I. M. (2009) Meurigite-Na, a new species, and the relationship between phosphofibrite and meurigite. American Mineralogist, 94 (5) 720-727 doi:10.2138/am.2009.3134 | Journal (article/letter/editorial) | | meurigite-Na is the Silver Coin mine, Valmy, Iron Point district, Nevada, where it occurs as radial sprays of cream-colored...quarry in Victoria, Australia, and at an unnamed pegmatite prospect near Linopolis, Minas Gerais, Brazil...2003 at the Silver Coin mine, Valmy, Iron Point district, Nevada. The sprays of yellow to cream fibers...and SE¼ Sec. 2, T35N, R41E) Valmy, Iron Point district, Humboldt County, Nevada (Fig. 1). The following...ruifrancoite, leucophosphite, muscovite, and quartz on a specimen from an unnamed pegmatite prospect near Linopolis |  | | Journal (article/letter/editorial) | | lizardite, magnetite, manganite, molybdenite, muscovite, pectolite, phlogopite, prehnite, pyrite, pyroaurite...Hampton submitted several samples from an unnamed pegmatite feldspar mine in Middleton. Two of the specimens...so-called cookeite turns out to be sericitic muscovite. Crystals of cookeite are fairly dis tinctive...quarry at Glendale has produced a large variety of pegmatite phosphate minerals. Among these is the species |  | | Journal (issue) | | but Espenshade (1954) identifies it as a short unnamed inclined adit accompanied by a small dump about...James RiverRoanoke River manganese and iron mining district. Mining for iron ore began during the Revolutionary...turquoise were reported (Sterrett, 1910). The district was explored for manganese ores by the Otter River...portion of the James River–Roanoke River manganese district, west of Lynch Station (after Espenshade, 1954)...of the Bishop copper prospect is mapped as a muscovite schist unit, whereas the nearby Bishop manganese |  | | Journal (article/letter/editorial) | | MINERALOGY OF AN EVOLVED DICKINSON COUNTY, MICHIGAN, PEGMATITE. T. W. Buchholz1, A. U. Falster 2, W. B. Simmons2...(1961) documented approximately ninety known pegmatite occurrences in central Dickinson County in the...Upper Peninsula of Michigan. A small beryl-rich pegmatite was investigated to describe its mineralogy and...determine its degree of geochemical evolution. The pegmatite is emplaced in Lower Proterozoic metamorphic rocks...probable that the pegmatite is late- to post-Penokean in age. Local control for pegmatite emplacement appears |  | | Journal (issue) | | SEPTEMBER–OCTOBER 2019 Articles The Golconda District, Minas Gerais, Brazil ..........................volume 50, September–October, 2019 The Golconda District Minas Gerais, Brazil Carlos Cornejo1 Andrea Bartorelli2...with tourmaline, have sustained the Golconda pegmatite field’s reputation as among the most important...districts in all of Brazil. INTRODUCTION The Golconda Pegmatite Field is a familiar name to mineral collectors...nascent electronics industry. It was in India that muscovite processing for exportation (known as the “Indian |  | London, D., Morgan, G. B., Paul, K. A., Guttery, B. M. (2012) Internal Evolution of Miarolitic Granitic Pegmatites at the Little Three Mine, Ramona, California, USA. The Canadian Mineralogist, 50 (4) 1025-1054 doi:10.3749/canmin.50.4.1025 | Journal (article/letter/editorial) | | the temperatures recorded by feldspars in the pegmatite that surrounds the miarolitic pockets, then the...compositions. Keywords: miarolitic, granitic pegmatite, modal analysis, bulk composition, alkali feldspars...Three mine are located within the Ramona pegmatite district, ~7.5 km east of Ramona, San Diego County...The Main dike contains the thickest section of pegmatite, 1026 the canadian mineralogist up to ~2.5...dikes in Foord et al. (1989). Other small, unnamed pegmatite dikes occur on the property. Geometry of the |  | | Report (issue) | | OF THS FUJKTKSS SPRUCE PIHB DISTRICT, ISOlCffl CABOLIHA by Donald A* Brobst This report la praliminary...Geologic map of the Plumtree area, Spruce Pine district, Forth Carolina.................................Figure 1. Index map of Plumtree area, Spruce Pine district, North Carolina ................................................... 42 ?. Muscovite in the vail zone of the pegmatite in tha Meadow mine, Avery Co...structure map of the Plumtree area, Spruce Pine district , Horth Carolina. .............. 10. Geologic |  | | Book (volume) | | California, is arguably the most important gem-pegmatite district in North America. Its wealth of tourmalines...qualify as world's best and superior to any from Madagascar, Afghanistan, Russia, or Brazil. Certainly, only...Mine in Topsham: both are small open pits in pegmatite. Morrill et al. (l 958) relieves the problem by...standard labeling procedures when they collect at unnamed sites. Locality data should be referred to nearby...addition to lacking verifiability. There are few unnamed spots in Maine. When a specific locality within |  | | Book | | Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas]. Beginning...testing to be hematite. Zagi [Zegi] Mountain, Warsak district, North West Frontier Province. Surface diggings...to 6 cm (2005: 120). Los Remedios mine, Taxco district, Taxco, Guerrero. Ilvaite occurs in the wallrock...manto deposits of polymetallic ores in the Taxco district, commonly as compact aggregates of crystals overgrown |  | | Journal (issue) | | Mogok belongs to Mogok Township, in Pyin-U-Lwin District, in Mandalay Division, which borders Sagaing Division...January–February, 2022 Figure 3. The Ruby Mining District in Burma around Mogok, as surveyed by R. Gordon...exchange for exclusive gem-mining rights in the district. Agreeing, the king made U Tha Doon “sole governor”...depopulated mining district, and the smuggling of gems entirely out of the district became an industry...off complete anarchy, King Mindon decreed the district free and open to all for mining and trading. Additionally |  | | Book | | Strontian crandallite from the Alto Benedeto pegmatite, Parai'ba, Brazil (by J.P. Cassedanne & L. Barreto)...JEANETE --with J. P. Cassedanne: Apatite and muscovite from the Ze Pinto prospect, Minas Gerais, Brazil...21:409-412 --with J. P. Cassedanne: The Jaguara~u pegmatite, Minas Gerais, Brazil 25:165-170 9 AUTHOR/TITLE...23:228 Al 'JAJ\ABO~OINA The Anjanabonoina pegmatite. Madagascar (by W. E. Wilson) 20:191-200 A.'\ :E.!\1ARTINL...Rybicki) 7:72-77 Chalcanthite from the Helvetia district, Arizona (by G. Robinson) 9:252 Cuprite [from |  | | Report (issue) | | Pegmatite Investigations 1942-1945 Black Hills, South Dakota By LINCOLN R. PAGE and OTHERS GEOLOGICAL...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...of U. S. Bureau of Mines sample cuts, Elkhorn pegmatite, Custer County, South Dakota. Geologic map and |  | | Report (issue) | | Helpful suggestions on field occurrences and pegmatite mineralogy were received horn Dr. James J. Norton...Zinnwaldite Phlogopite Glauconite Kaolinite Talc Muscovite (Sericite) (Fuchsite) Montmorillonite lliite...north side of the tunnel entrance to the Greene pegmatite three miles east-northeast of Pringle has been...in the siliceous gold ores of the Bald Mountain district three miles west of Lead by Ziegler (5) p 61....southeast part of the Gayle (Dubuque)-Royal Flush pegmatite 5.9 miles southwest of Custer by Redden (5) p |  | | Journal (issue) | | e r a lo j g ic a l Volume Eight/Number Two PEGMATITE ISSUE #1 p u b lis h e r ls * h n Q n i. • ;...83 by R. Lasmanis The Clear Creek Pegmatite: A Rare Earth Pegmatite in Burnet County, Texas............. Iores K IO i DITOR Here it is: our first Pegmatite Issue! Actually this accumulation is a happy accident;...our file of articles I realized we had enough pegmatite-related papers to fill an issue. One advantage...a certain article. The article on the Harding pegmatite, for instance, may not cause “Vol. 8, no. 2!” |  | | Journal (issue) | | Golden Topaz, 3.5 inches, from Katlang, Mardan District, Pakistan; Freilich Collection. OPENING SPREAD:...Stan Tourmaline) into a general San Diego County pegmatite collectic of nearly 200 superb specimens. Fine...garnets stood side-by-side with rare and exotic pegmatite specie It was widely acclaimed as the finest such...on matrix, from Ghundao Hill, Katlang, M ardan District, Pakistan; 3.15 inches. ♦ 61 ♦ T opaz with...exceptional, bright, rose-pink muscovite from Tchombarak Vil lage, Pech district, Kunnar in Nuristan, Afghanistan |  | | Book | | Roland Bouhelier in 1973 from the "Bouhelier pegmatite", and shortly thereafter acquired by the Canadian...Organic compounds 491 Partially studied and unnamed MSH minerals 494 Gemstones 514 Pseudomorphs...an accumulated repository of partially studied (unnamed) minerals. This is likely to continue for many...case of the island of Laven in the Langesundfjord District of Norway. Interestingly, and in contrast to its...and partially studied and unnamed (UK) minerals. For the unresolved unnamed minerals, all available technical |
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Unnamed pegmatite, Mandevontena, Masindray, Soavinandriana District, Itasy, Madagascar