DENMAN-002 - A NEW CV3 CHONDRITE FROM SOUTH-AUSTRALIA

Denman 002 is a new Australian carbonaceous chondrite. A single stone of 30 g was recovered in 1991 May near Fisher Station on the Trans Aus tralian Railway, Nullarbor Plain, South Australia (30-degrees-36'S, 13 0-degrees-04'E). Texture, mineral and chemical composition indicate th at it is a CV3 chondrite of oxidised subgroup with several similaritie s to Allende. It is composed of sharply defined chondrules, Ca-Al rich inclusions up to 3.5 mm across, olivine aggregates and fine-grained, nearly opaque matrix (40 vol%). Silicates are compositionally highly h eterogeneous (olivine Fa: 0.2-45.6 mol%, PMD: 109.7). Denman 002 shows shock effects of stage S1 and weathering of category A