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Callaina

E Vicipaedia
Callaina

Callaina,[1] in Latinitate mediaevali turcosa,[2] est gemma cyanea viridi mixta, non perspicua, perraro crystallina. In descriptione chemica est minerale phosphati cum alia tum aluminium et cuprum continens.

Formula chemica callainae haec est: CuAl6[(OH)2|PO4]4H2O.

  1. Plin. Nat 1.37a.46; 37.147; etiam callais apud Plinium (Nat. 37.151); lapis callainus in Dig. 39.4.16.7.
  2. Keferstein 1849: 54, apud quem etiam lapis Turcicus et alia similia.

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