belonite definition

  • noun:
    • one of several min acicular or dendritic crystalline forms occasionally seen in glassy volcanic rocks.
    • instant acicular or dendritic crystalline kinds often observed in glassy volcanic stones.
    • A kind of minute imperfect crystals, typically acicular in kind, often dendritic, seen in glassy volcanic rocks. The term is currently limited to like use no action on polarized light.
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