FORMS OF CARBON IN THE NEW HAVERÖ UREILITE OF FINLAND

Abstract

Based on its mineral composition and structure the Haverö meteorite, which fell on August 2, 1971, in Finland, is a ureilite, the sixth meteorite in this rare group. Elementary carbon in this meteorite is represented by diamond, lonsdaleite, graphite and chaoite microcrystals in the intergrowths. The presence of lonsdaleite and chaoite indicates that diamonds were formed in the Haverö meteorite due to the action of strong shock waves