04988 - Well Crystallized Acicular Brochantite with Quartz from South Morocco Crinoids It is conserved in its

It is conserved in its natural matrix

-Mosasaurus hoffmanni (Mantell

ridged back

This type of remains

At the bottom of the piece a casting has been made for its greater protection

04988 - Well Crystallized Acicular Brochantite with Quartz from South Morocco Crinoids It is conserved in itsBrochantite is a sulfate mineral, one of a number of cupric sulfates. Its chemical formula is Cu4SO4(OH)6. Formed in arid climates or in rapidly oxidizing copper sulfide deposits. Crystals of brochantite can range from emerald green to black green to blue green, and can be acicular or prismatic. Brochantite is often associated with minerals such as malachite, azurite, and chrysocolla, and may form pseudomorphs with these minerals. Brochantite is a