Rare Petrified wood with Calcite- Schilderia admanica- Chinle Formation, Northern Arizona. Out of all Arizona petrified wood found today, less than 1% is Schilderia. This type of wood is found only in the upper Chinle rock formation. Measurements nearly 24 x 18 inches. The item “Rare Petrified Wood Slab with Calcite” is in sale since […]