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SPANGOLITE.Named in 1890 by Samuel Lewis Penfield in honor of Norman Spang [1842 Etna, Pennsylvania, USA - Decemeber, 1922 Paris, France], iron manufacturer and mineral collector of Etna, Allegheny County, Pennsylvania, USA, contributor of the type specimen for study.

SPANGOLITE.Named in 1890 by Samuel Lewis Penfield in honor of Norman Spang [1842 Etna, Pennsylvania, USA - Decemeber, 1922 Paris, France], iron manufacturer and mineral collector of Etna, Allegheny County, Pennsylvania, USA, contributor of the type specimen for study.

Gem Silica with Azurite and Malachite.  Gem Silica or Gem Chrysocolla is a rare form of chalcedony colored by copper ... It is often found mixed with malachite, azurite, turquoise or quartz.

Gem Silica with Azurite and Malachite. Gem Silica or Gem Chrysocolla is a rare form of chalcedony colored by copper ... It is often found mixed with malachite, azurite, turquoise or quartz.

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