 | | Report (issue) | | The Natural History Museum of Milan and its Madagascar Collection The Museo Civico di Storia Naturale... the museum began paleontologic fieldwork in Madagascar (upper Permian fauna and Jurassic and Cretaceous...fieldwork in Madagascar in 1996 in collaboration with other institu tions in Madagascar, Italy, and the...Pezzotta has spent a total of twenty nine months in Madagascar making geological-mineralogical surveys. In collaboration...both classic and new minerals and gemstones from Madagascar opened at the Natural History Museum in Milan |  | | Journal (article/letter/editorial) | | Antlerite, Utah, 244 Apatite, Bahia, Brazil, 38; Madagascar, 256; Michigan, 96; Ohio, 255 Aquamarine, Minas... Miguel Arrojado Ribeiro Listoa, 47 Arsenic, Madagascar, 256 Arsenopyrite, Colorado, 337; Maine, 412...Part 1,52-53 Dadsonite, Nevada, 128 Danburite, Madagascar, 256 Daniel Bonanza mine, Colorado, 3 11 Datolite...Estes Quarry, Cumberland County, Maine: A New Pegmatite Locality, W. B. Thompson, A. U. Falster, W. B...Estes Quarry, Cumberland County, Maine: A New Pegmatite Locality, 408-18; Minerals of the Brufnado Magnesite |  | | Journal (issue) | | west. Butte is situated in the Summit Valley, an intermontane valley at an elevation of 1,800 meters (5...Marcosson, 1957). By the winter of 1864 the Summit Valley district (Butte’s original name) had been organized...Co. Unita Unrepresented Valdemere Valley East Valley Queen Valley West Venus Vesuvius Virginius Volunteer...mentioning here. By the mid-1890’s, the Summit Valley had been more or less denuded of vegetation by...Bow Creek provided the sole drainage within the valley watershed, it became a de facto sewage system for |  | | Journal (issue) | | Rhodizite-Londonite from the Antsongombato Pegmatite, Central Madagascar Brendan M. Laurs, Federico Pezzotta...Process ratified • Alexandrite from Mananjary, Madagascar • Colorchange apatite from Kazakhstan • New emerald...60 ct heated amber, 3.44 ct plastic-impregnated opal; (row 2) 4.48 ct “diffusion-treated” topaz, 2.51...68); and Steve Ulatowski of New Era Gems, Grass Valley, California, for the before-and-after sample of... RHODIZITE-LONDONITE FROM THE ANTSONGOMBATO PEGMATITE, CENTRAL MADAGASCAR By Brendan M. Laurs, Federico Pezzotta |  | | Book | | acicular crystals of rutile (Weerth, 2004). Tonniq Valley, Skardu district, Gilgit-Baltistan [Northern Areas]...region of Alpine-type clefts along the Torrniq Valley produced small numbers of ilmenite specimens reminiscent...The thin-tabular ilmenite crystals of the Torrniq Valley also form spherical aggregates ("closed roses")...several centimeters diameter. However, many Torrniq Valley specimens labeled "ilmenite" prove upon testing...commonly seen. Mount Blanco mine near Ryan, Death Valley. The Mount Blanco borate deposit is the type locality |  | | Journal (issue) | | across, and more. Exploitation of this remarkable pegmatite continued intermittently until 1937, when the...bed. lt proved to be topaz from a Precambrian pegmatite cutting coarse-grained reddish granites of the...photo. Spodumene, 9.5 cm, from Resplendor, Doce Valley, Minas Gerais, Brazil. Don and Laura Aaron photo...this in mind, I prefer gern crystals, mostly pegmatite specimens in a few farnilies ... but not always...aquamarine ("The Tuning Fork"), 5.2 cm, from the Shigar Valley, Gilgit-Baltistan, Pakistan. Paul Bordovsky photo |  | | Journal (issue) | | Museum Toronto, Ontario Steven R. Morehead Green Valley, AZ Donald R. Peacor University of Michigan Ann...Regularly! Alpine Mineral Company Fine Alpine and Gem Pegmatite Minerals www.alpineminerals.com e-mail: kevin@alpineminerals...colored by copper. Cuprian elbaite from the Batalha pegmatite veins, unrecognized until the 1980’s, has become...though not of such high quality; and the Khan pegmatite near Rössing, Namibia, is also high in copper...local mining industry has focused on industrial pegmatite minerals, especially tantalite. Access is via |  | Gaines, Richard V., Skinner, H. Catherine W., Foord, Eugene E., Mason, Brian, Rosenzweig, Abraham, King, Vandall T. (1997) Dana's New Mineralogy (8th ed.) Wiley-Interscience. p.1872 | Book (edition) | | extent of producing diffraction patterns (e.g., opal), (2) metamict materials that were crystalline at...few materials by X-ray diffraction order (e.g., opal). Lattice constants are generally derived es be...fibrous minerals Columbite, wolframite Quartz Opal, some yellow varieties of sphalerite Nepheline Tale...Mineralogical Magazine A. LaCroix, Mineralogie de Madagascar, 1922 P. Embry and Fuller Manual of New Mineral...Mohave and Cochise Cos., AZ; Elmore, Idaho, and Valley Cos., ID; Goldfield, Esmer- 444.2 Silver 3 |  | | Book (volume) | | yegorovite Na4[Si2O4(OH)2]2·7H2O from the Palitra pegmatite, Lovozero massif, Kola peninsula hydrated proton)...MgB6O7(OH)6·2H2O Locality: Chelkar salt dome, Aksai Valley, Aktobe region, Kazakhstan (type locality). Description:...MgB6O7(OH)6·2H2O Locality: Chelkar salt dome, Aksai Valley, Aktobe region, Kazakhstan (type locality). Description:...Locality: Ampanodiana North pegmatite, Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa Commune...Vakinankaratra Region, Antananarivo Province, Madagascar. Description: Grey grains from the association |  | | Book | | SHAPE program available from Eric Dowty, 521 Hidden Valley Road, Kingsport, Tennessee, 37663, USA. The authors...Al)802o(OH)4*4H20, 0 Syst=? Monte Chiaro, Taro Valley, Italy. H=?, Dvv,=?, Dp=?, VHIE 08c. Veniale &...E Mon. Porcelanous white. Furnace Creek, Death Valley, Inyo Co., California, USA. H=4.5, Djj4= 2.88,...brown. Balangero serpentinite, Lanzo massif, Lanzo Valley, Piemonte, Italy. H=?, Djjj= 2.98, D(;= 3.098,...Translucent dark blue-green, green. Sapucaia Pegmatite, Galileia, Minas Gerais, Brazil. H=6, Djjj=3.60 |
|
