home / Achate aus aller Welt / Nordamerika / USA / Idaho / Spencer

home / agates worldwide / Northamerica / USA / Idaho / Spencer

Opalhaltige Thundereggs im rhyolithischen Muttergestein von Spencer, Idaho.

 

 

 

 

 

 

Opal-bearing thundereggs in the rhyolitic hostrock of Spencer, Idaho.

foto courtesy of Doug Moore, Stevens Point, WI