Opal Var. Geyserite
Unknown Owner
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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
Known provenance
| Date | Collector | Acquisition price |
|---|---|---|
| 08/2024 | Unknown Owner | Not disclosed |
| — | The Arkenstone | Not disclosed |
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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


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