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Tapia gypsum deposit, Trancas Department, Tucumán, Argentina

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Name(s) in local language(s): Yacimiento Tapia, Departamento Trancas, Provincia de Tucumán, Argentina
 
Elevation: 752 meters over sea level.
Gypsum Deposit. At presente is in exploitation.

History:
Gypsum in Tucuman is located within the stratigraphic column, in the upper strata of tertiary, usually accompanying the oolitic limestone, interacting with clayey sediments of color greenish-Brown.
Are presented in various varieties, such as fibrous concrecionales robes and partially crystallized type Selenite, sacaroide (Alabaster), etc...
The Tertiary of Tucumán presents the clay series that totals 11 bitumen, cinerites, marl, limestone and sandstones, interbedded with gypsum and limestone.
Gypsum banks reach thicknesses variables, coming in part to occur more than 1 meter.
In the area of Tapia, especially in the vicinity of the road to Raco, gypsum is presented in masse in the arcillita Brown, with a variety of fine grain medium and fibrous, being exploited today for supply of cement factories.
Chemical analysis of gypsum Tapia:
Silicon dioxide (SiO2): 3.64 g.%
Calcium sulfate (SO4Ca.2H2O): 85.94 g.%
Ferric oxides and aluminous ((Fe2O3 - Al2O3): 8.84 g.%
Indeterminate: 1.58 g.%

Mineral List



1 entry listed. 1 valid mineral.

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References

Hugo A. Peña (1970) - Minerales y Rocas de Aplicación de la Provincia de Tucumán. Dirección Provincial de Minas. Tucumán.

Carlos Díaz - Yacimientos mineros de la Provincia de Tucumán. Informe del Departamento de Investigaciones Industriales de la Universidad Nacional de Tucumán.

R. López Zigarán - Estudio y ensayo de materiales, Fascículo II: cales, yesos y cementos. Publicación Nº 751. Instituto General de Construcciones. Facultad de Ciencias Exactas y Tecnología. Universidad Nacional de Tucumán.

Juan C. Porto (1961) - Yesos y sulfatos alcalinos en Vipos. Tucumán. Instituto Miguel Lillo. Universidad Nacional de Tucumán. Inédito.

 
Mineral and/or Locality  
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