Rare azurite and malachite in petrified wood faced rough, Turkey. 6 pounds Colla

Rare large faced rough of green malachite, blue azurite and yellow volborthite in petrified wood (Pinus). In 2012, gold prospectors in the Tolkat province of Turkey discovered a petrified log. The log was silicified and had secondary deposition of copper minerals including azurite (blue) and malachite (green). Copper mineralization of petrified wood is very rare, […]