"... The territory of the former Bard Ranch north of Phoenix is now entirely within the territory of a regional park with strictly controlled collection ban (Ranger are looking for illegal collectors regularly even with helicopters).

Here excellent plume-agates could be found with deep black, dense plumes, but also conventional fortification agates with white, black and blue gray layers in nodules of sometimes extraordinary sizes ... "

Johann Zenz wrote in his article “Achat- und Jaspisfundstellen in Arizona, USA”, Mineralienwelt 01/2012, Bode Publishing House