Grape Agate
| Grape Agate | |
|---|---|
 | |
| General | |
| Category | Mineral |
| Identification | |
| Mohs scale hardness | 7 |
Grape Agate is a market name for purple aggregates of tiny quartz crystals with botryoidal (spherical) habit.[1] Mineralogically speaking, grape agate is not an agate[2] and is actually botryoidal purple chalcedony.[3]
It occurs in Indonesia[2] and has also been found west of the Green river in Utah.[4]: 75
References[edit]
- ^ "Grape Agate: What are these tiny spheres of purple quartz?". geology.com. Retrieved 2021-11-11.
- ^ a b "Grape agate". www.mindat.org. Retrieved 2021-11-17.
- ^ "What Is Grape Agate?". Retrieved 2021-11-20.
- ^ Wilson, James R. (1995). A Collector's Guide to Rock, Mineral, & Fossil Localities of Utah. Utah Geological Survey. ISBN 978-1-55791-336-4.
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