Geological Survey of India : Potash in India/compiled by Virendra Kumar and P.C. Bakliwal. Kolkata, Geological Survey of India, 2005, xiii, 134 p., tables, figs., $20 (pbk). [Miscellaneous Publication No. 65]

    Contents: I. Introduction: 1. Uses of potash. 2. History of potash mining. 3. Sources of potash: i. Evaporite deposits. ii. Sea, lake and sub-surface brine resources. iii. Insoluble potash mineral and by-product potash. iv. Potash from fly ash. v. Potash from molasses residue. vi. Potash in India. II. World Resources and Mining of Potash: 1. Marine Saline Lake evaporite deposits. 2. Mining and processing of potash. III. Potassiferous Evaporite Deposits in India: 1. Configuration of the basin. 2. Geology. 3. Potash mineralisation. 4. Reserves and grade. IV. Lacustrine Seawater, Brines/Bittern and Other Resources of Potash in India: 1. Sea water brines and bitterns in India. 2. Efflorescent salt deposits (a potash source). 3. Recovery of potash as an industrial by - product. V. Glauconite - A Potential Source of Potash Fertilizer: 1. Properties of glauconite. 2. Origin of glauconite. 3. Commercial uses of glauconite. 4. Glauconite occurrences in the world. 5. Glauconite occurrences in India. VI. Status of R and D Work in India: 1. Geological Survey of India. 2. Central, Marine Chemical and Salt Research Institute (CSMCRI), Bhavnagar, Gujarat. 3. Regional Research Laboratory (RRL), Bhopal, MP. 4. Regional Research Laboratory (RRL), Bhubneshwar. 5. Project development, Sindri, Bihar. 6. Agricultural universities. VII. Conclusion. References. Annexures: 1. Case history of the exploration techniques adopted for potash in the evaporites of the Marwar supergroup in Nagaur-Ganganagar Basin. 2. Potash-bearing marine evaporite minerals.

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