A NEW METEORITE FROM KANSAS

Murchisite, Cr5S6, a new mineral from the Murchison meteorite

Murchisite (IMA 2010-003), Cr5S6, is a new chromium sulfide mineral, discovered in the Murchison CM2 meteorite. The type material occurs as one subhedral crystal (1.3 × 4 mm in size) in contact with low-Ni iron (“kamacite”), martensitic iron, schreibersite, and a Ca-,Al-rich glass, all of which are included in an isolated forsteritic olivine grain in the meteorite’s matrix. The mean chemical co...

Tistarite, Ti2O3, a new refractory mineral from the Allende meteorite

Tistarite, ideally Ti2O3, is a new member of the corundum-hematite group. It is found as one subhedral crystal in a cluster of micrometer-sized refractory grains along with khamrabaevite (TiC), rutile, and corundum crystals within a chondrule from the Allende meteorite. The mean chemical composition determined by electron microprobe analysis is (wt%) Ti2O3 94.94, MgO 2.06, Al2O3 1.50, ZrO2 0.44...

On a Stony Meteorite from Anthony, Harper County, Kansas, and a Recently Found Meteoric Iron from Mejillones, Chile.

Grossmanite, CaTi3+AlSiO6, a new pyroxene from the Allende meteorite

Grossmanite, Ca(Ti,Mg,Ti)AlSiO6 with an end-member formula CaTiAlSiO6, is a new member of the Ca clinopyroxene group, where the trivalent cations are dominant in the M1 site with Ti3+ being the dominant trivalent cation. It occurs as micrometer-sized crystals along with spinel and perovskite in a melilite host in Ca-,Al-rich refractory inclusions from the Allende meteorite. The mean chemical co...

Gujba: A new Bencubbin-like meteorite fall from Nigeria

Alan E. Rubin, Gregory W. Kallemeyn, John T. Wasson, Robert N. Clayton, Toshiko K. Mayeda, Monica M. Grady and Alexander B. Verchovsky. Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, USA ([email protected]); Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA; Natural History Museum, Cromwell Road, London SW7 5BD, UK; PSSRI,...