Uvalde County, Texas, USA

Datolite "crystal ball" is 1.8mm in diameter perched happily on a calcite rhomb. From the west vent of the maar crater in Knippa, Uvalde Co., Texas. Collectee by Don Saathoff, 1993. Photo by and in the collection of Don Saathoff.

Calcite crystal group, 12 mm., Knippa Quarry, Uvalde County, Texas. Gift Art Smith 2009. K. Nash specimen & image.

Complex, rounded calcite crystals. Gift, Art Smith. K. Nash specimen & photo.

© Kelly Nash

Goethite pseudomorph after pyrite crystals from Uvalde County. Ex Barbara & Forrest Cureton, Joe Cilen (#16,399).

© Kelly Nash