The message of oldhamites from enstatite chondrites

Investigation of Presolar Silicate Grains from Enstatite Chondrites

Be-B IN ENSTATITE AND ORDINARY CHONDRITES: A PRELIMINARY STUDY

Aubrites: Their origin and relationship to enstatite chondrites

All ten known aubrites (enstatite achondrites) as well as Happy Canyon and Mt. Egerton, related anomalous meteorites, have been studied in order to understand their origin and relationship to enstatite chondrites. Mineralogically, aubrites contain 75-9B% enstatite (En98.76-99.54), 1-16% plagioclase (Anl.S-B.:), O.Z-K.l^r diopside (Wo40.1-46.1). 0.3-10.07f olivine (Fo99.79-99,99), <0.l3.7% metal...

Separation of Q-Noble gas carrier from bulk carbon in enstatite chondrites by stepped combustion

The nature of the planetary noble gas (PNG) carrier or Q-phase [1] in meteorites is still a subject of discussion. Failure to identify and isolate this carrier since the first successful concentration of it by a factor of ~200 in an Allende HF-HCl residue [1] and establishing it to be carbonaceous in nature [2], led eventually to the so-called “labyrinth” theory [3], according to which PNG init...

NWA 4415 AND 4416: TWO NEW ENSTATITE CHONDRITES FROM NORTHWEST AFRICA. V. Moggi-Cecchi, G.Pratesi,

Moggi-Cecchi, G.Pratesi, I.A. Franchi, R.C. Greenwood, Museo di Scienze Planetarie, Via Galcianese 20/h, I59100 Prato, Italy, e-mail: [email protected], Dipartimento di Scienze della Terra dell'Università degli Studi di Firenze, Via G.La Pira 4, I-50123 Firenze, Italy, e-mail: [email protected], Planetary and Space Sciences Research Institute, The Open University, Walton Hall, Milton Ke...