Rudist Bivalve Fossil | Saudi Arabia | Late Cretaceous titanium ” and weighs 23

” and weighs 23

is weakly to moderately magnetic and has a Mohs hardness of 5

and smokey quartz

Composed of iron oxide (Fe₃O₄)

This specimen is sourced from coarse-grained pegmatite deposits in Minas Gerais

Rudist Bivalve Fossil | Saudi Arabia | Late Cretaceous titanium ” and weighs 23Rudist bivalves are an extinct marine mollusk that operated as major reef builders in the Late Cretaceous. Their shell structure was heteromorphic, they often possessed a thick, calcitic attached valve and a smaller free upper valve. While rudists themselves are known for their strange and varied shapes, some groups within this subclass exhibit homeomorphic evolution, where unrelated species evolved similar, often parallel forms. This item is 8 x 4