20082 - Nice 1.34 Inch Aragonite Twinned Crystal Cluster - Safro Mine, Bou Azzer, Morocco Palaeonotopterus Struve 1990 (trilobite)
Yard notes & kiln story
Description
Struve 1990 (trilobite)
This tooth has an outstanding preservation
Morzadec 1997 (trilobite)
deep subtidal shelf (1)
Most pieces have a thin weathering rind
20082 - Nice 1.34 Inch Aragonite Twinned Crystal Cluster - Safro Mine, Bou Azzer, Morocco Palaeonotopterus Struve 1990 (trilobite)Aragonite is a carbonate mineral, one of the three most common naturally occurring crystal forms of calcium carbonate, CaCO3 (the other forms being the minerals calcite and vaterite). It is formed by biological and physical processes, including precipitation from marine and freshwater environments.