Azurite mineral from Iran (ancient Persia).
Coming from the mines of Mes Meydook, the mineral, after being extracted and ground very finely, undergoes a purification treatment according to the floating method called "froth flotation". The result is a very intense blue with no impurities.
This azurite can replace Lapislazzuli for its intensity.
Azurite is a natural mineral blue pigment known since ancient times. Composed of basic copper carbonate 2CuCO3 · Cu (OH) 2, in the form of a pigment it is also known as Azzurro della Magna (or d’Alemagna, an azurite sourcing area for English artists). The original name of the mineral, however, probably derives
from the Arabic al-lazward or Persian lajward, whose meaning is, in fact, blue.
Very finely ground, ready to use.
An example in Lincoln Cathedral
the external garment of the Madonna is painted with this extra azurite from Iran and egg tempera.