 | | Journal (article/letter/editorial) | | replaced by beryllium silicates such as bavenite, bertrandite and bityite. Tourmaline crystals vary from schorl–dravite...partie par des silicates de Be comme bavénite, bertrandite et bityite. Les cristaux de tourmaline varient...1990) is located at Leckbachscharte in the Eastern Alps (Habachtal, Salzburg, Austria). Although the tectonic...oxides of Nb–Ta, mainly columbite–tantalite, and bertrandite. Crystals of greenish beryl are rare; accessory...beryl reveal partial replacement by bavenite, bertrandite or bityite. Bluish green euhedral millimetric |  | | Book | | © 1993 Eigenverlag Dr. Reinhard Exel, Vienna/Austria: A-1100 Wien, Malborghetgasse 31 Gesamtherstellung:..................................... Entwicklungen im Mittelalter und in der Neuzeit ....................der Mineralogie im 19. Jahrhundert ................... „ .•.•... „„..... Fortschritte im 20. Jht. und Aspekte...Industriemineralien, Edelsteine, usw.) vorgenommen wird. Im Bestreben alle bislang auf dem Territorium der Republik...Gestaltung des vorliegenden Werkes bedeutsam waren: - Im Zuge flächendeckender, geochemischer Untersuchungen |  | | Journal (article/letter/editorial) | | have also been mined in Afghanistan, Australia, Austria, Bulgaria, China, India, Madagascar, Namibia, Nigeria...address: lgroat@eos.ubc.ca (L.A. Groat). 0169-1368/$ – see front matter © 2008 Elsevier B.V. All rights reserved...the difference between emerald and green beryl (see Conklin, 2002; Schwarz and Schmetzer, 2002). However...Canada, the Muzo mine in Colombia, the Mohmand district in Pakistan, and Norway. Beryl has a wide stability...Be-bearing minerals occur in metamorphic rocks (see below) (Zwaan, 2006). 3. The geochemistry of Be, |  | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | hosted in: (IIA) Mafic-ultramafic rocks (Brazil, Austria); (IIB) Sedimentary rocks-black shale (Colombia...deposits or hidden granitic intrusion-related (Austria, Egypt, Australia, Pakistan), and some unclassified...(Malyshevo). Ukraine: 43. Wolodarsk. Bulgaria: 44. Rila. Austria: 45. Habachtal. Norway: 46. Eidswoll. Switzerland:...[18], the Muzo mine in Colombia [1], the Mohmand district in Pakistan [1], and Eidswoll in Norway [13]....silica to form silicate minerals, such as beryl, bertrandite [Be4 Si2 O7 (OH)2 ], and/or Be-bearing micas |  | | Journal (issue) | | absolutely parallel and the inclusion is rather visible (see Figures 1, 2 and 3). Thefluorescenceappeared to be...table-cut diamond, probably the Mirror of Portugal (see Figures 4, 5 and 6). The piece of jewellery on page...and in the collar of his Queen, Marie Leczinska (see Figure 7). Strangely enough we have not been able...Commerce and Industry AN UNUSUAL CHRYSOBERYL I am guilty of having quite a few failings, among them...one. We seldom study the actual skin structure to see if in fact it is of the ultra fine overlapping platelets |  | | Book | | a few such specimens have been found after 1960 (see the Amity-Edenville entry for Edenite and Spine!)...Mount Malosa, Chilwa alkaline province, Zomba district. "Illite" is the name of a series of incompletely...to 2 cm which are pseudomorphs after bastnasite--see photo in Guastoni, Pezzotta and Zorzi (2008). ILMENITE...euhedral, pale tan to white rnicrocline crystals-see photos in Dupuis and David (2013). ffighway 5 extension...molybdenite specimens showing crystals to 6 cm (see this entry for Molybdenite), and in a second roadcut |  | | Book | | Paris-Lodron-University of Salzburg, Hellbrunner Str. 34, A-5020 Salzburg, Austria; franz.neubauer@sbg.ac...Geography and Geology, Paris-Lodron-University of Salzburg. Mineral concentrates of muscovite were packed...Northern Brazilian pegmatite region. Bull. Geol. Soc. Am. 1945, 56, 505–514. [CrossRef] Beurlen, H. The mineral...Northeastern Brazil and its sedimentary cover: A review. J. Am. Earth Sci. 1995, 8, 365–376. [CrossRef] Magyar,...pegmatites: Evidence from beryl and its breakdown products. Am. Mineral. 2014, 99, 424–432. [CrossRef] Scorza, E |
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