Mamra Springs 45°13' N, 62°5' E Kazakstan Fall 1927, May 5-15 Stone. Chondrite. Ordinary (L6) Synonym(s): Mamra Approx. recovered weight: 1 kg A stone of 1kg fell in the night of 5 May (L.A. Kulik, 1929) or 15 May, I.S. Astapowitsch (1938). The data seems to be uncertain, but somewhere between 5 and 15 May, V.1 Vernadsky, letter of 5 August 1939, in Min. Dept., NHM, London. Only 58g have been preserved, date given as 15 May, L.G. Kyasha & A. Ya. Skripnik (1978). Source