 | | 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...lavender-colored gem variety of spodumene now known as kunzite. Since the beginning of mining in the late nineteenth...(bottom left page). Map of the Southern California pegmatite province, including location of major specimen-producing...Geology and Geography The Southern California pegmatite province is a mountainous, semiarid region located |  | | Journal (article/letter/editorial) | | variety kunzite, with quartz, lepidolite, and albite, 26 × 17 × 13 cm, Kunar Valley, Nuristan Province...Province, Afghanistan; Joe Budd photo, courtesy of The Arkenstone. (f) Beryl variety heliodor, 8.5 × 2.9 × 2...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...cavity (Silver Dollar Pocket) exposed at the Havey pegmatite, Maine, in October 2013; photo courtesy of Jeff |  | | Report (issue) | | 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...the world's largest known beryl crystal is a pegmatite at Malakialina, Madagascar, which produced one...the giant-sized crystals found in the massive pegmatite portions. Morphology Beryl crystals are hexagonal |  | | Journal (issue) | | Golden Topaz, 3.5 inches, from Katlang, Mardan District, Pakistan; Freilich Collection. OPENING SPREAD:...the Brumado mine, Brazil; Elbaite from Nuristan, Afghanistan; Neptunite from San Benito County, California;...San Francisco mine, Mexico; elbaite from Nuristan, Afghanistan; gold from California; barite from the M...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 |  | | Book | | 25:53-54 AFGHANISTAN Famous mineral localities: the pegmatites of Laghman, Nuristan, Afghanistan (by P....Strontian crandallite from the Alto Benedeto pegmatite, Parai'ba, Brazil (by J.P. Cassedanne & L. Barreto)...21:409-412 --with J. P. Cassedanne: The Jaguara~u pegmatite, Minas Gerais, Brazil 25:165-170 9 AUTHOR/TITLE...23:209-225. 23:228 Al 'JAJ\ABO~OINA The Anjanabonoina pegmatite. Madagascar (by W. E. Wilson) 20:191-200 A.'\...Rybicki) 7:72-77 Chalcanthite from the Helvetia district, Arizona (by G. Robinson) 9:252 Cuprite [from |  | | 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 | | 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) | | 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...for mica produced in Minas Gerais. A rich, new pegmatite deposit in the Brazilian Golconda area, best known |  | | 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)...deposits of the James River-Roanoke River manganese district. U.S.Geological Survey Bulletin 1008,134–135. |  | | Book (volume) | | California, is arguably the most important gem-pegmatite district in North America. Its wealth of tourmalines...world's best and superior to any from Madagascar, Afghanistan, Russia, or Brazil. Certainly, only the best...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 |  | | Report (issue) | | Helpful suggestions on field occurrences and pegmatite mineralogy were received horn Dr. James J. Norton...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...schist exposed at the Beecher No. 3-Black Diamond pegmatite four and one-half miles south-southeast of Custer |  | | 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 |
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