gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1957.031.236.11 Painite, a New Mineral from Mogok, Burma Claringbull G. F. B.Sc., Ph.D., A. Inst.P. Hey Max H. M.A., D.Sc. Department of Mineralogy, British Museum (Natural History) Payne C. J. B.Sc. Laboratory of the Diamond, Pearl, and Precious Stone Trade Section of the London Chamber of Commerce 3 1957 31 236 420 425 Copyright © 1957, The Mineralogical Society 1957 Summary

A singly terminated transparent, deep-garnet-red crystal originally weighing 1·7g. from a gem gravel from Mogok, Burma, proves to be a new mineral having Al2O3 76·2, SiO2 5·6, B2O3 2·2, CaO 15·7, H2O 0·7, Fe2O3 and MnO traces, total 100·4. Sp. gr. 4·01; ω 1·8159, ɛ 1·7875; H 8. The hexagonal unit cell has a 8·725, c 8·46 Å., space group P63, P63/m or P63 22, and contains approximately 38 O. The name painite is proposed in honour of A. C. D. Pain who recognized the unusual nature of the crystal.