Refractory minerals in interplanetary dust

Roy Christoffersen, P R Buseck

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)590-592
Number of pages3
Issue number4776
StatePublished - 1986

ASJC Scopus subject areas

  • General


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