Magnesite

Magnesite

from the Upper Silurian age

in iron smelting and other metallurgy

Malachite is known for its deep green coloration

These specimens of natural uncut aquamarine occur within a unique matrix of thick mica with a strong yellowish tint

From the Upper Ordovician Period - Ashgill Stage - Ktaoua Formation

It is found in many sites across the world

with color intensity usually deepest at the termination or tip of each crystal

and is one of the more common gems although pieces of exceptional hue and clarity are considered fairly rare and can be extremely valuable

it is not uncommon for insects and other small animals to become trapped within tree sap

A vivid and richly colored copper-based mineral

Flexycalymene Trilobite Fossils (Flexicalymene ouzregui) are approx

The word copper originates from the latin for the island of Cyprus