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Elahera District, Central Province, Sri Lanka

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Gem mining in highly metamorphosed sedimentary rocks 115 km NE of Colombo. Produces 35% of the island's gemstones.
Gems & Gemology 1986, 22 (2), 80-95




Group 4 - Oxides and Hydroxides
  		• Chrysoberyl4.BA.05
    BeAl
     
    2
    		O
     
    4
  		• Corundum
    var: Ruby    		4.CB.05
    Al
     
    2
    		O
     
    3
      var: Sapphire4.CB.05
    Al
     
    2
    		O
     
    3
  		• Spinel4.BB.05
    MgAl
     
    2
    		O
     
    4
    Group 6 - Borates
  		• Sinhalite6.AC.05
    MgAl[BO
     
    4
    		]
    Group 9 - Silicates
  		• Pyrope
    var: Rhodolite    		9.AD.25
    Mg
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
  		• Zircon9.AD.30
    Zr[SiO
     
    4
    		]
    Unclassified Minerals
  		• 'Tourmaline'-


    8 entries listed. 7 valid minerals.

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