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Madagascar

Back to the roots - Oliver Kuerdele presents facts, tips and maps on his trip to the island. Rate this

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• Madagascar Amethyst - ( SiO2 ) © 2004 gggems.com All rights reserved.
  
  (Variety of Quartz)
  · Crystallographic properties:
  Trigonal System (Subdivision of the hexagonal system)
  Quartz forms hexagonal prisms at the blunted ends and the head
  finishing in h...
• Madagascar Tourmaline - © 2004 gggems.com All rights reserved.
  
  (Na, Li,Ca) (Fe2, Mg, Mn, Al)3 Al6 I(OH)4 I (BO3)3ISi6O18I
  
  · Crystallographic properties: Trigonal.
  
  Hardness 7 - 7.5
  Density 3.02 to 3.26
  Refractive index: 1.62 - 1.64
  
  · Ch...
• Madagascar Garnets - © 2004 gggems.com All rights reserved.
  
  Crystalline System: cubic.
  
  Red - violetish: Hardness Density Ref.Index
  Pyrope Mg3Al2Si3O12 7,25 3,58 g / cm3 1,714
  Almandine Fe3Al2Si3O12 7,50 4,32 1,830
  Rhodolite Mg,Fe3Al2SiO12 7,25 3,...
• Madagascar gem safari - © 2004 gggems.com All rights reserved.
  
  MADAGASCAR GEM SAFARI 2
  
  Sapphire from Maromby in a metamorphic limestone. ( Andranondambo area.)
  
  Looking for sapphire on the ground in 1992.
  
  Sapphires from Andranondambo, discove...
• Madagascar Movie Review - Madagascar is an animated comic adventure from PDI/DreamWorks about a bunch of zoo animals returned to the wild. A lion, a zebra, a giraffe and a hippo are best friends who have spent their entire lives in New York\'s Central Park Zoo. The civilized New
• Ilakaka Madagascar ( Sapphire rush ) - ...
• Ilakaka Madagascar ( Sapphire rush ) - © 2004 gggems.com All rights reserved.
  
  ILAKAKA
  
  · The plateau of Ilakaka in 1992.
  
  Ilakaka is located on the road to Tulear,
  south-west of Madagascar. The discovery of
  sapphire in the current of 1998 transformed the ar...
• Andranondambo Sapphire discovery ( Madagascar ) - ...
• Andranondambo Sapphire discovery ( Madagascar ) - © 2004 gggems.com All rights reserved.
  
  Tranomaro in 1991 >>
  
  Geographical division
  We will distinguish:
  1 the volcanic solid mass of
  Androy, it is covered with
  thorny bush and meadows.
  
  2 the gneissic zone of to <...
• Madagascar corundums ( Sapphire & Ruby discovery ) - © 2004 gggems.com All rights reserved.
  
  
  AL2O3
  Sapphire found in a metamorphized limestone.
  
  · Crystallographic properties of corundum:
  Trigonal.c = 1,3630 pp 0 86°4' ; pa1 = 122°26'
  Macle according to p (1011), often po...