Abstract
THE Geological Survey of India has recently commenced the publication of a series of Bulletins of Economic Minerals as a war-time measure to direct attention to India's mineral resources. Those issued in 1941 deal with chromite, strontium minerals phosphates and clay, and several others are in preparation. No. 6 (1942), ”Indian Precious Stones”, by Dr. L. A. N. Iyer, is a useful pamphlet of fifty-four pages, with two plates illustrating the mining of ruby at Mogok in Burma. It rather gives the impression of a hasty compilation from scattered sources of information ; but some additional matter is given relating to the Mogok “stone tract”, where the author was engaged in the production of the Geological Survey maps. There, in addition to ruby, a considerable variety of minerals of gem quality has been found. Apart from these, and the sapphire of Kashmir and the many gemstones of Ceylon, there are really few occurrences of importance in India proper, except for semi-precious stones such as agate and almandine garnet.
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Indian Precious Stones. Nature 150, 458 (1942). https://doi.org/10.1038/150458b0
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DOI: https://doi.org/10.1038/150458b0