Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Mineralogical Characteristics and Mineral Economics of Kaolinite Deposit of Sawa Area, Chittaurgarh, Rajasthan


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1 Department of Geology, M. L. Sukhadia University, Udaipur - 313 001, India
     

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A large deposit of low-grade kaolinite is occurring within the rocks of Lower Vindhyan Supergroup southwest of Chittaurgarh, Rajasthan. The deposit is being utilised by open-cast, manual to semi-mechanised methods of mining. Kaolinite produced is being marketed without processing. Earlier, nearly 60% of the kaolinite produced from the area was consumed by cement industries, but in recent past, utilisation of low-grade kaolinite has been minimised by cement industries in production of ordinary cement and hence its production has significantly declined. Mineralogical studies reveal that kaolinite is the main clay-mineral and quartz, calcite, iron-oxides and biotite are present as non-clay minerals in clay deposit of the area. Chemical analysis of the kaolinite show that alumina ranges from 15 to 35% while, silica and iron varies from 51 to 78% and 0.25 to 2.50% respectively.

Keywords

Kaolinite, China Clay, Mineralogy, Mineral Economics, Vindhyan Supergroup, Rajasthan.
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  • Mineralogical Characteristics and Mineral Economics of Kaolinite Deposit of Sawa Area, Chittaurgarh, Rajasthan

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Authors

M. S. Shekhawat
Department of Geology, M. L. Sukhadia University, Udaipur - 313 001, India
Veena Sharma
Department of Geology, M. L. Sukhadia University, Udaipur - 313 001, India

Abstract


A large deposit of low-grade kaolinite is occurring within the rocks of Lower Vindhyan Supergroup southwest of Chittaurgarh, Rajasthan. The deposit is being utilised by open-cast, manual to semi-mechanised methods of mining. Kaolinite produced is being marketed without processing. Earlier, nearly 60% of the kaolinite produced from the area was consumed by cement industries, but in recent past, utilisation of low-grade kaolinite has been minimised by cement industries in production of ordinary cement and hence its production has significantly declined. Mineralogical studies reveal that kaolinite is the main clay-mineral and quartz, calcite, iron-oxides and biotite are present as non-clay minerals in clay deposit of the area. Chemical analysis of the kaolinite show that alumina ranges from 15 to 35% while, silica and iron varies from 51 to 78% and 0.25 to 2.50% respectively.

Keywords


Kaolinite, China Clay, Mineralogy, Mineral Economics, Vindhyan Supergroup, Rajasthan.

References