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Merelani Hills (Mererani), Lelatema Mts, Arusha Region, Tanzania

(Mererani)

Gem mining area 70 km from Arusha, where tanzanite was first found in 1968.

The occurrence of gem-quality tanzanite and grossular has been found to occur mainly in boudinaged pegmatitic veins and hydrothermal fracture fillings. These fracture fillings occur in brecciated and hydrothermally altered graphite-bearing gneiss in a mineral association containing glass-clear quartz, diopside, zoisite, graphite and calcite.

Refs.:
- Barot, N.R. and Boehm, E.W. (1992) Gem Quality Green Zoisite, Gems & Gemology: Spring 1992: 28(1).

- http://www.ajol.info/viewarticle.php?id=16567&jid=98&layout=abstract




Mineral list contains contents from all localities listed at bottom of page


Mineral List:
  		•  'Apatite'
  		• Axinite-(Mg) (TL)
  		• Calcite
  		• 'Chabazite'
  		• Diopside
  		• Graphite
  		• Grossular
  		• Grossular
    var: Tsavorite
  		• Gypsum
  		• Kyanite
  		• 'Marialite-Meionite Series'
  		• Prehnite
  		• Pyrite
  		• Quartz
  		• Scolecite
  		• Sillimanite
  		• Sphalerite
  		• 'Stilbite'
  		• Tremolite
  		• Zoisite
       var: Tanzanite


    21 entries listed. 15 valid minerals. 1 type locality (valid mineral).

    Localities in this Region:
    Tanzania
     
    • Arusha Region
      • Lelatema Mts
        • Merelani Hills (Mererani)

    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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