Chemistry:Grape Agate
From HandWiki
Short description: Mineral that looks like grape
| Grape Agate | |
|---|---|
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| 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](p75)
References
- ↑ "Grape Agate: What are these tiny spheres of purple quartz?". https://geology.com/minerals/grape-agate/.
- ↑ 2.0 2.1 "Grape agate". https://www.mindat.org/min-51479.html.
- ↑ "What Is Grape Agate?" (in en). https://www.geologyin.com/2019/04/what-is-grape-agate.html.
- ↑ Wilson, James R. (1995) (in en). A Collector's Guide to Rock, Mineral, & Fossil Localities of Utah. Utah Geological Survey. ISBN 978-1-55791-336-4. https://books.google.com/books?id=t-XvE8DTiW0C&dq=grape+agate&pg=PA75.
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