| |
Abstracts Vol. 39, Issue 8, August 2004 (Site not responding. Last check: 2007-11-01) |
 | | Our analyses of high quality spectra of several S-type asteroids (17 Thetis, 847 Agnia, 808 Merxia, and members of the Agnia and Merxia families) reveal that they include both low- and high calcium pyroxene with minor amounts of olivine (<20%). |
| | High-calcium pyroxene is a spectrally detectable and petrologically important indicator of igneous history and may prove critical in future studies aimed at understanding the history of asteroidal bodies. |
| | The silicate mineralogy inferred for Thetis and the Merxia and Agnia family members requires that these asteroids experienced igneous differentiation, producing broadly basaltic surface lithologies. |
| meteoritics.org /Abst_39-8.htm (2584 words) |
