20095 - Beautiful Deep Blue Azurite Crystals - Kerrouchen mine (Morocco) Parvilichas Trilobita - Proetida - Aulacopleuridae
Yard notes & kiln story
Description
Trilobita - Proetida - Aulacopleuridae
more present in sidi-daoui maestrichian level 3
chiefly chalcedony
Neumayr (1875) - Ammonite
Conrad 1841 (trilobite)
20095 - Beautiful Deep Blue Azurite Crystals - Kerrouchen mine (Morocco) Parvilichas Trilobita - Proetida - AulacopleuridaeAzurite is one of the two basic copper carbonate minerals, the other being bright green malachite. Simple copper carbonate (CuCO3) is not known to exist in nature. Azurite has the formula Cu3(CO3)2(OH)2, with the copper cations linked to two different anions, carbonate and hydroxide. Small crystals of azurite can be produced by rapidly stirring a few drops of copper sulfate solution into a saturated solution of sodium carbonate and allowing the