DIASPORE, noun [Gr., to disperse.] A mineral occurring in lamellar concretions, of a pearly gray color, and infusible. A small fragment, placed in the flame of a candle, almost instantly decrepitates, and is dispersed; whence its name. It is a mineral little known.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI