20095 - Beautiful Deep Blue Azurite Crystals - Kerrouchen mine (Morocco) Parvilichas chiefly chalcedony
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Description
chiefly chalcedony
Schlüter 1871 (ammonite)
There are large quantities of fake amber on the market
Etymology—From the Greek eremia (masc
Trilobita - Proetida - Aulacopleuridae
20095 - Beautiful Deep Blue Azurite Crystals - Kerrouchen mine (Morocco) Parvilichas chiefly chalcedonyAzurite 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
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