Refractory minerals in interplanetary dust

Details Refractory minerals in interplanetary dust Refractory minerals in interplanetary dust

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986sci...234..590c&link_type=abstract

Science (ISSN 0036-8075), vol. 234, Oct. 31, 1986, p. 590-592.

Computer Science

11

Interplanetary Dust, Mineralogy, Refractory Materials, Calcium Compounds, Carbonaceous Chondrites, Inclusions, Magnesium Compounds, Olivine, Silicates, Spinel

Scientific paper

A newly studied interplanetary dust particle contains a unique set of minerals that closely resembles assemblages in the refractory, calcium- and aluminum-rich inclusions in carbonaceous chondrite meteorites. The set of minerals includes diopside, magnesium-aluminum spinel, anorthite, perovskite, and fassaite. Only fassaite has previously been identified in interplanetary dust particles. Diopside and spinel occur in complex symplectic intergrowths that may have formed by a reaction between condensed melilite and the solar nebula gas. The particle represents a new link between interplanetary dust particles and carbonaceous chondrites; however, the compositions of its two most abundant refractory phases, diopside and spinel, differ in detail from corresponding minerals in calcium- and aluminum-rich inclusions.

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