Azurite Crystals on Velvet Malachite 7593f763218830c761b012aecc3068f6 Ortocerous: 350 million years ago

Ortocerous: 350 million years ago these extinct relatives of the chambered nautilus flourished in a warm

Keichousaurus (meaning "Kweichow lizard") is an extinct genus of pachypleurosaurian marine reptile from the Chialingchiang and Falang Formations of China with two known species attributed to the genus: K

Quartz is composed of silica (SiO2) and forms an important part of most igneous rocks

It is very similar to Alexandrite but lacks the photochromic color changing properties of Alexandrite

Azurite Crystals on Velvet Malachite 7593f763218830c761b012aecc3068f6 Ortocerous: 350 million years agoAzurite is a deep blue copper mineral that normally forms the weathering of copper deposits. It is generally found with its mineral cousin malachite which is why you can get both colors in one rock. Azurite is typically found as tabular to prismatic crystals of a deep "azure blue" color with splendent vitreous faces. Over 100 forms have been described. Azurite is often pseudomorphed to Malachite.