It sheds green sparkles every time I touch it. Mica mines operate near here, which makes me think this is a chunk. Very shiny.

    • Wren@lemmy.todayOPM
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      18 days ago

      I don’t think so. The rock is dark green, it only looks white because it’s very shiny. It’s fairly brittle and sands off into dust rather than flakes and fibres.