Opal Var. Geyserite - image 1
Opal Var. Geyserite - image 2

Opal Var. Geyserite

Unknown Owner
Help improve this recordNo owner is registered for this specimen yet. If it's yours or you know more about it, you can add the owner, provenance, publications and other details.
Sign in to contribute
So-called "geyserite" is a variety of opal formed in fumarole deposits. Apparently these were collected by a Dr. Leidy in 1877 on a trip, and brought back to give to the Academy for its collections. Half a dozen samples were here, all with the same number handpainted on the backsides, denoting common origin. This piece comes with a copy of the original label. NOTE: Collecting in the park is prohibited today.

Product details

SpeciesOpal
SizeMiniature
Dimensions3.7 x 2.8 x 1.9 cm
Added on10/23/2024
LocalityUSA, Wyoming

Known provenance

DateCollectorAcquisition price
08/2024Unknown OwnerNot disclosed
The ArkenstoneNot disclosed

Learn more

Opal
Mineral guide
Learn about Opal
amorphous silica with water and a spectacular play-of-color; black, boulder, and fire opal varieties capture brightness, color, and collecting appeal.
Regional guide
Opal from Wyoming
Sign in to contribute