| | 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) | the U.S., Germany, Austria, Switzerland, France, Italy, Great Britain, Hungary, Yugoslavia, Romania, Ceylon...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...including the region now known as the Eastern Pegmatite Province. Just below the center can be seen the Rio | | | Journal (issue) | crystal cluster, 7.3 cm, from near Bapu, Guangdong Province, China. Rob Lavinsky specimen, now in the Tom...but Espenshade (1954) identifies it as a short unnamed inclined adit accompanied by a small dump about...the Hesse-Nassau Province in Germany. During the next two years Ahlfeld visited Italy, Austria, Yugoslavia...the José Lippeheide mining company in the Basque province between 1953 and 1954. He published his monograph...Survey, GEOBOL. In 1963 he mapped the Ayopaya province for the German Mission at the age of 71, quite | | | 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 | 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...concerning the origin of the Monteregian Hills alkaline province, and a brief description of each member. The geology...and partially studied and unnamed (UK) minerals. For the unresolved unnamed minerals, all available technical | | | 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) | Rhodochrosite on Manganite N'Chwaning Mine, Northern Cape Province, South Africa. 8.7 cm In 1978 a historic discovery...exchange for some corals that he had brought from Italy, inspiring him to praise Binnyaran as “the most...of that year all of Burma became officially a province of India. Immediately following the annexation...25-carat round 30 brilliant which then went to an unnamed American buyer; its current whereabouts are unknown...pegmatites, most notably at the rich Sakhan-gyi pegmatite mines. Crossed-hammer symbols indicating important | | | Journal (issue) | part of the Monteregian Hills alkaline igneous province. LOCATION The Francon quarry is unusual in being...Proterozoic Grenville Province, and on the southeast by the Humber Zone of the Appalachian Province. The sedimentary...Zone marks the western edge of the Appalachian Province. In the Montreal area, the Taconic Orogeny is...Hills alkaline igneous province its name (Adams, 1903). The Monteregian Province comprises an east-southeast-trending...which intrudes Proterozoic rocks of the Grenville Province; the major plutons Mont Royal, Mont SaintBruno | | | 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!” | | 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...Little 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 | | | Journal (issue) | Sililcates Nacrite, Chlorite, Kaolinite, Tourmaline, Almandine (LH) *Zone abbreviations: O = Oxide zone, C =...TURNEAURE, F. S. (1971) The Bolivian silver-tin province. Economic Geology, 66, 215-225. JACOBSON, H....deposits of the San Cristobal district, Villa Martin Province, Potosf, Bolivia. U.S. Geological Survey Bulletin...however, was vesuvianite from the Susa Valley, Italy. Dudley had several miniature specimens with prismatic...Argentina has come up with a surprise: a granite pegmatite locality. Xavier du Gromont is the geologist working |
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Unnamed pegmatite, Chiavenna, Sondrio Province, Lombardy, Italy