 | | Journal (issue) | | “Bob” Jackson was born in New Jersey in 1948, the son of Ruthie and Charlie Jackson, a shipping manager...journalism, but those plans were interrupted by the Vietnam War. After four years in the Navy, he saw the light...Rhodochrosite on Manganite N'Chwaning Mine, Northern Cape Province, South Africa. 8.7 cm In 1978 a historic discovery...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 |  | | 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 |  | | Book (volume) | | California, is arguably the most important gem-pegmatite district in North America. Its wealth of tourmalines...towns, counties, and districts in each state and province arranged alphabetically; with an appendix, containing...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 |  | | 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 |  | | 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...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 |  | | Journal (article/letter/editorial) | | beryllium and the crustal Be cycle from migmatite to pegmatite JOSEPH M. EVENSEN*† and DAVID LONDON School of...the final stages of the petrogenesis of granite–pegmatite systems. In combination with reported data on...(Table 1), although the database is skewed toward pegmatite samples that contain abnormally high contents...illustrates the distribution of Be in a schematic pegmatite dike initially Mineral/melt partitioning and...Table 11. Beryllium reservoirs in a schematic pegmatite dike. Temperature (°C) 700 600 500 400 Be |  | | Book | | MALAWI Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...Administered Tribal Areas and North West Frontier Province. Ilmenite crystal clusters to 12 cm across have...of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas]. Beginning...hematite. Zagi [Zegi] Mountain, Warsak district, North West Frontier Province. Surface diggings worked by local...to 6 cm (2005: 120). Los Remedios mine, Taxco district, Taxco, Guerrero. Ilvaite occurs in the wallrock |
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