gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1971.038.293.12 The Molteno Meteorite Frost Michael J. 1 British Museum (Natural History), London, S.W. 7

Present address: Dept. of Geology, Northern Polytechnic, London, N. 7.

 3 1971 38 293 89 93 2 2 1968 31 7 1969 Copyright © 1971, The Mineralogical Society 1971 Summary

The Molteno meteorite was seen to fall in South Africa in 1953. It is a howardite, with pyroxene varying from En76Fs22Wo2 to En38Fs58Wo4 and then to En33Fs26Wo41. Also present are twinned plagioclase (An 84·4%) and small quantities of olivine (Fa 12%), troilite, nickel-iron (Ni 4%), ilmenite, and an aluminian chromite with 0·71% V2O3. A bulk analysis and analyses of the metal, troilite, and combined silicates and oxides are given.