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Cymophane

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Formula:
BeAl2O4
A variety of Chrysoberyl

An opalescent variety of Chrysoberyl. Exhibits a bluish (or yellowish according to other sources) chatoyancy which is caused by microscopic tube-like cavities or needle-like inclusions of rutile in an orientation parallel to the c-axis.

Visit gemdat.org for gemological information about Cymophane.


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Chemical Properties of CymophaneHide

Formula:
BeAl2O4

Synonyms of CymophaneHide

Other Language Names for CymophaneHide

German:Cymophanit
Spanish:Cymophanita

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for CymophaneHide

Reference List:
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Haüy (1798), Journa ines: 4: 5.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 718.

Internet Links for CymophaneHide

Localities for CymophaneHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Democratic Republic of the Congo
 
  • Kasaï (Kasaï-Occidental)
Edwards, M.G. (1917) The American Mineralogist, 2, #7, 88-89.
Madagascar
 
  • Antananarivo Province
    • Analamanga Region
      • Ankazobe District
Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
  • Fianarantsoa Province
    • Matsiatra Region
      • Ikalamavony District
        • Fitampito Commune
Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871; Behier, J. (1960): Contribution á la Minéralogie de Madagascar. Annales Géologiques de Madagascar XXIX, Tananarive, p. 27
  • Mahajanga Province (Majunga)
    • Betsiboka Region
      • Maevatanana District
Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Géologique Madagascar. A 1871
  • Tuléar Province (Toliara)
    • Menabe Region
      • Miandrivazo District
Behier, J. (1963): Carte mineralogique de Madagascar. Archive Service Geologique A. 1871
Sri Lanka
 
  • Sabaragamuwa Province
    • Ratnapura District
Josep Sanchez specimens (INTAN, Barcelona)
      • Ratnapura
Ceylon Aluvial Mine, (Book, Co. 2002)
Mineral and/or Locality  
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