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St John's Island (Zagbargad; Zebirget; Topazios), Red Sea, Egypt

Quaternary volcanic island which is an ancient (1300 BC) locality of gem peridote. The Greek name of the island, Topazios, is believed to have given name to topaz.

Presence of spinel-lherzolites with anhydrous Al-diopside pyroxenites and hydrous Cr-diopside pyroxenites layers.





Mineral List:
  		•  Actinolite
  		• 'Albite-Anorthite Series'
  		• 'Apatite'
  		• 'Clinopyroxene Subgroup'
  		• Davyne
  		• Forsterite
  		• Forsterite
    var: Peridot
  		• Hercynite
    var: Picotite
  		• Ilmenite
  		• Kaersutite
  		• Magnesiohornblende
  		• Magnetite
    var: Titaniferous Magnetite
  		• 'Orthopyroxene Subgroup'
  		• Pargasite
  		• Phlogopite
  		• Spinel
  		• Tremolite


    17 entries listed. 10 valid minerals.

    The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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    Copyright © Jolyon & Ida Ralph 1993-2008. Jobs in Egypt Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.