Mesothermal Deposits

Mesothermal Deposits

 

a class of hydrothermal mineral deposits originating in the earth’s interior by deposition of a mineral mass from hot mineralized aqueous solutions, circulating at depths of approximately 1,000 m; the solutions are under great pressure and have temperatures of 300°-200°C. Mesothermal deposits form veins, sheetlike bodies, and irregularly shaped deposits. They were first identified by the American geologist W. Lindgren in 1907.

References in periodicals archive ?
(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 [62], 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.