Assertion: silicon carbide's grain size | /r/CapableOf | show the signature of the s-process
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text: Anders and Zinner (1993) have reviewed the subject and conclude that the grain size and abundance of silicon carbide shows the signature of the s-process originating from red giant carbon (AGB) stars of 1-3 solar masses with an age > 109 a. [s-process nucleosynthesis occurs when neutrons are captured at a slow rate relative to β-decay rates which occurs extensively during the Asymptotic Giant Branch phase of stellar evolution, shown graphically on the Hertzprung-Russell diagram Fig. 1.1]