THE ANALYSIS OF 4 COSMIC DUST PARTICLES

A set of four stratospheric particles was reanalysed. These particles registered in the NASA Cosmic Dust Catalogs (CDCs) were classified in the Houston Johnson Space Center (JSC) as the particles of cosmic orig in (''C''). Present energy-dispersive X-ray (EDX) spectra confirmed pr evious classification and revealed additional features in the chemical composition of the cosmic dust particles. The particles are extremely fine-grained aggregates with bulk chondritic composition. Somewhat hi gher content of oxygen may indicate a presence of hydroxide containing minerals in their phase composition.