A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c13.7
A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v1.c13.7
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v1.c13.7
"Vaikrānta has 8 faces and 6 angles" &c., (p. 83) possibly refers to a mineral crystallizing in the octahedral form, and of the many minerals crystallizing in this form the family of spinels is more likely to exhibit the great range of colours given.