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Azurite has the formula Cu3(CO3)2(OH)2
South Africa (6)
• Eocene of Spain (1 collection)
It is still preserved included in part of the sandy-gravel sediment that is cemented and mineralized to its surface
The entire mandible and cranial remains of this mosasaur species are extremely rare
21161 - Premium Grade Soft Bodied Xiphosurid (Horseshoe Crab Ancestor) Lower Ordovician Shark Azurite has the formula Cu3(CO3)2(OH)2Xiphosurans are an order of arthropods related to arachnids, or, according to one recent study, actually arachnids. They are sometimes called horseshoe crabs (a name applied more specifically to the only extant family, Limulidae). They first appeared in the Tremadocian (Lower Ordovician) from Fezouata Fm in South Morocco. Currently, there are only four living species. They are members of the order Xiphosura, which contains two suborders, Xiphosurida