07815 - Beautiful Azurite + Malachite Crystals on Carbonate Matrix - Kerrouchen (Morocco) Shark vertebrae Impressive and unique natural association

Impressive and unique natural association that is composed of the pubis (pelvic bone) next to a complete vertebra

Gerastos sp: Fossilworks (Paleobiology Database)

A preparation like this requires tens of hours and a lot of patience

You can also see a partially disarticulated calyx with its corresponding arms

where the organic matter has difficulty decomposing

07815 - Beautiful Azurite + Malachite Crystals on Carbonate Matrix - Kerrouchen (Morocco) Shark vertebrae Impressive and unique natural associationAzurite 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