Chalcedony (Var: Agate)

Specimen ID: QE6-ER8

Chalcedony (Var: Agate) : SiO2
As recorded:
Rancho Coyamito, Sierra del Gallego, Ahumada Municipality, Chihuahua, Mexico
Mindat locality:

Photo added to

Agate showing replacement of aragonite crystal. 8 x 10 cm Specimen from the Norte (North) locality.
Van King - 15th March 2009
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