Moni: "How can we not fall in love with rocks as these?" Anne: "This is the smallest and the newest of the Julesburg bunch."
Julesburg, L3.6; L3.7; Contains copper; S3; br; Find 1983, Colorado, USA A single mass of 57.9 kg was found in a landfill at Julesburg. - abundant chondrules and chondrule fragments - little fine-grained matrix - clearly defined chondrules abundant - glass within chondrules (clear, pale-brown, lilac) - brecciated and shocked - aluminum-rich spinels within chondrules and inclusions - examination of main mass suggests three smaller individuals have spalled during ablative flight - interior of the stone dark grey - gross heterogeneity on cut surfaces and in thin sections - a few rounded, light-grey, metal-poor inclusions - veins of metal and sulphide - light and dark material - numerous chondrules indent each other - some chondrules welded to adjacent silicates - olivine phenocrysts in the darker areas - metal grains p to 0.6 mm across and generally angular - troilite is polycrystalline - high-nickel metal: taenite with 38% Ni, tetrataenite with 49% Ni - rare, pale-green inclusions (olivine and/or pyroxene) - megachondrules and large clasts Signed: Proud owner of a 43.5-gram slice* + thin section * Purchased from Walter and Niki Zeitschel in 1987 ______________________________________________ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list