(1994); Giolani (1995), the country's type of emerald deposit is unique in the world in accordance to mesothermal deposits
(300 [grados] C) developed through thermochemical reduction of sulfates rich in hydrogen and sulfides by interaction with organic strata.
At the Qatruyeh area similar to other mesothermal deposits
, ore forming system is accompanied by both replacement and brecciated textures with the latter more common in shallower deposits and well developed alteration patterns , with sodic-calcite alteration in depth and the propylitic-hematitization haloes in shallower depths [11,53, 62].
Having worked at the nearby Sigma mines, Canadian Malartic, Marban and Rand Malartic in the 1980s as mine and exploration geologists, we acquired top level expertise with vein-type mesothermal deposits
within the Val d'Or Gold Camp and along the Cadillac Break of the Abitibi Greenstone belt," said Alain-Jean Beauregard, president of Geologica.