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chrysoberyl

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Journal Article
Published: 23 October 2018
The Canadian Mineralogist (2018) 56 (4): 411–424.
... the available specimens it is possible to infer that a blocky albite unit and masses of quartz (quartz cores) formed the main units of the dike. The pegmatite, composed mainly of primary albite (Ab 96 –Ab 100 ), also contains primary chrysoberyl, almandine, schorl, and muscovite as common accessory minerals...
FIGURES
Journal Article
Published: 01 August 2017
American Mineralogist (2017) 102 (8): 1747–1758.
... and the so-called alexandrite effect wherein the perceived color of a mineral changes with different lighting conditions (i.e., daylight vs. incandescent light). In this article we have collected ultraviolet/visible/near-infrared (UV-Vis-NIR) spectra of a gem-quality, synthetic Cr-bearing chrysoberyl crystal...
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Journal Article
Published: 01 April 2015
American Mineralogist (2015) 100 (4): 861–871.
...Sandra Drev; Matej Komelj; Matjaž Mazaj; Nina Daneu; Aleksander Rečnik Abstract We studied V-shaped twins of chrysoberyl (BeAl 2 O 4 ) from Rio das Pratinhas pegmatites near Arataca in the Bahia state of Brazil. The local structure of the twin boundaries was determined using powder X-ray...
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Journal Article
Published: 01 April 2014
The Canadian Mineralogist (2014) 52 (2): 129–164.
... (beryl, chrysoberyl, bertrandite, euclase, trilithionite, Li-muscovite, petalite, pollucite), rare element-bearing oxide minerals (columbite-tantalite, bismutotantalite, Nb-rutile, cassiterite, hübnerite, qitianlingite), phosphate minerals (triplite, lithiophilite, Mn-rich apatite, xenotime, monazite...
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Journal Article
Published: 01 April 2014
The Canadian Mineralogist (2014) 52 (2): 191–219.
...-REE-U oxide, Y-REE phosphate, Mn-Fe-phosphate, Ti-Zr-silicate, Be-Y-REE-U-silicate and oxide minerals (beryl, chrysoberyl, bertrandite, bavenite, and milarite), garnet (almandine-spessartine), tourmaline (schorl to rare elbaite), bismuthinite, magnetite, and rarely dumortierite and helvite...
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Journal Article
Published: 01 August 2012
The Canadian Mineralogist (2012) 50 (4): 873–894.
... and kyanite as the major phases; the accessory and trace minerals include beryl, chrysoberyl, garnet, fluorapatite, columbite-(Mn) to tantalite-(Mn), pollucite, gahnite, zircon, uraninite and thorite. Holmquistite was found in the exocontact assemblage. Primary textures of magmatic origin were partially...
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Journal Article
Published: 01 December 2002
Mineralogical Magazine (2002) 66 (6): 985–1002.
...P. J. Downes; A. W. R. Bevan Abstract A deposit of chrysoberyl (BeAl 2 O 4 ), including the variety alexandrite, occurs near Dowerin, in the southwestern region of the Archaean Yilgarn Craton, Western Australia. The deposit is situated in the northern part of the Lake Grace Terrain, a crustal...
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Journal Article
Published: 01 January 2002
Reviews in Mineralogy and Geochemistry (2002) 50 (1): 551–589.
... for special optical purposes, and as gemstones. Beryl, ideally Al 2 Be 3 Si 6 O 18 , bertrandite, Be 4 Si 2 O 7 (OH) 2 , and phenakite, Be 2 SiO 4 are mined and processed as ores of Be. Beryl and chrysoberyl are used as maser and laser crystals, and bromellite BeO has outstanding properties...
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Journal Article
Published: 01 October 2000
The Canadian Mineralogist (2000) 38 (5): 1163–1175.
... chrysoberyl, emerald and phenakite. The pegmatite is associated with a two-mica peraluminous Hercynian granite, and intrude dunites of the Schistose domain in the Galician Tras-Os-Montes Zone. The composition of fluid inclusions in emerald and phenakite has been determined using a Raman microprobe...
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Journal Article
Published: 01 June 1999
American Mineralogist (1999) 84 (5-6): 733–745.
...Joseph M. Evensen; David London; Richard F. Wendlandt Abstract Beryllium contents of granitic melts at saturation in beryl (+ or - chrysoberyl, phenakite, or quartz) have been determined by forward- and reverse-direction experiments at 650-850 degrees C and 200 MPa using natural beryl...
Journal Article
Published: 01 December 1996
The Canadian Mineralogist (1996) 34 (6): 1329–1336.
Journal Article
Published: 01 August 1995
The Canadian Mineralogist (1995) 33 (4): 775–792.
Journal Article
Published: 01 March 1995
Mineralogical Magazine (1995) 59 (1): 111–114.
Journal Article
Published: 01 April 1986
American Mineralogist (1986) 71 (3-4): 557–568.
... of chrysoberyl have been measured from 340 to 800 K. The resulting data have been combined with solution and phase-equilibrium experimental data and simultaneously fit using the program phas20 to provide an internally consistent set of thermodynamic properties for several important beryllium phases...
Journal Article
Published: 01 April 1986
American Mineralogist (1986) 71 (3-4): 277–300.
...Mark D. Barton Abstract The phase relations and thermodynamic properties of behoite (Be(OH) 2 ), bertrandite (Be 4 Si 2 O 7 (OH) 2 ), beryl (Be 3 Al 2 Si 6 O 18 ), bromellite (BeO), chrysoberyl (BeAl 2 O 4 ), euclase (BeAlSiO 4 (OH)), and phenakite (Be 2 SiO 4 ) have been quantitatively evaluated...
Journal Article
Published: 01 October 1981
American Mineralogist (1981) 66 (9-10): 1022–1033.
...Edward S. Grew Abstract Sunnamite, taaffeite, beryllian sapphirine, niobian rutile, chrysoberyl, and wagnerite occur in sillimanite-rich, medium-grained segregations in two pegmatites of probable late Archean age which cut granulite-facies rocks near McIntyre Island (67°22′S, 49°05′E) in Casey Bay...
Journal Article
Published: 01 August 1978
American Mineralogist (1978) 63 (7-8): 664–676.
...D. M. Burt Abstract Seven commonly associated minerals in the system BeO–Al 2 O 3 –SiO 2 –H 2 O include chrysoberyl, phenakite, euclase, bertrandite, beryl, kaolinite, and quartz. The phase rule implies that not more than six of these minerals can coexist at an invariant point...
Journal Article
Published: 01 June 1975
American Mineralogist (1975) 60 (5-6_Part_1): 481–482.
...Dale A. Huckaby; Terry L. Wright; Arthur J. Ehlmann Abstract An absorption band near 780 cm -1 in the infrared spectra of behoite [β-Be(OH) 2 ] and of chrysoberyl [Al 2 BeO 4 ] was assigned to the vibration of a beryllium atom moving in a tetrahedral cage of four fixed oxygen atoms. Using...
Journal Article
Published: 01 February 1974
American Mineralogist (1974) 59 (1-2): 159–165.
Journal Article
Published: 01 December 1965
American Mineralogist (1965) 50 (11-12): 1972–1981.
...E. F. Farrell; R. E. Newnham Abstract The optical absorption spectra of the isomorpbous minerals chrysoberyl, alexandrite, peridot, and sinhalite have been measured in polarized light at 77° K. Electronic transitions between the 6 A 1 ground state of Fe 3+ and a number of quartet states give rise...