20931 - Beautiful Malachite Crystals on Barite Matrix - Taouz Barite Mines (Morocco) Olcostephanus In the matrix that still

In the matrix that still surrounds the tooth

It has some glued fractures but not restored or fabricated

Amethyst is a purple variety of quartz (SiO2) and owes its violet color to irradiation

Everything else you see is the system of sensory lines (terrace ridges) that are already described in the article (1)

They are not usual

20931 - Beautiful Malachite Crystals on Barite Matrix - Taouz Barite Mines (Morocco) Olcostephanus In the matrix that stillMalachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and spaces, deep underground, where the water table and hydrothermal fluids provide the means for chemical precipitation. Individual crystals are rare but do occur as slender to acicular prisms. Pseudomorphs after