Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Chalcedony from
Opal Hill Mine, Mule Mountains District (Hodges Mountain District), Riverside County, California, USA


05188370017362181682101.jpg
Fire Agate

Opal Hill Mine, Mule Mountains District, Riverside County, California, USA
09154080017362181686227.jpg
Fire Agate

Opal Hill Mine, Mule Mountains District, Riverside County, California, USA
05188370017362181682101.jpg
Fire Agate

Opal Hill Mine, Mule Mountains District, Riverside County, California, USA
03431950017272014134885.jpg
Fire Agate

Opal Hill Mine, Mule Mountains District, Riverside County, California, USA
00445380017272014106032.jpg
Fire Agate

Opal Hill Mine, Mule Mountains District, Riverside County, California, USA
03431950017272014134885.jpg
Fire Agate

Opal Hill Mine, Mule Mountains District, Riverside County, California, USA
Locality type:Mine
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Quartz1
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Opal Hill Mine, Mule Mountains District (Hodges Mountain District), Riverside County, California, USA
Data Identifiers
Mindat Occurrence Record ID:214529
Long-form Identifier:1:3:214529:7
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
0.2km (0.1 miles) ⓘUnspecified Fire Agate occurrences [1], Mule Mountains District (Hodges Mountain District), Riverside County, California, USA
5.0km (3.1 miles) ⓘThumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
5.2km (3.2 miles) ⓘWiley's Well, Mule Mountains District (Hodges Mountain District), Riverside County, California, USA
9.6km (6.0 miles) ⓘTwin Buttes Agate fields, Palo Verde, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
13.3km (8.3 miles) ⓘPotato Patch, Hauser beds (Hauser Geode beds; Hauser Beds Mine), Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
13.5km (8.4 miles) ⓘHauser beds (Hauser Geode beds; Hauser Beds Mine), Thumb Peak, Palo Verde Mining District, Palo Verde Mountains, Imperial County, California, USA
17.4km (10.8 miles) ⓘBlack Hills, Imperial County, California, USA
18.9km (11.7 miles) ⓘUnnamed Fire Agate site [1], Black Mountains, La Paz County, Arizona, USA
20.1km (12.5 miles) ⓘUnnamed Agate occurrence [2], Little Chuckwalla Mountains, Riverside County, California, USA
26.1km (16.2 miles) ⓘMidway Well, Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
References
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 3, 2026 08:59:44
Go to top of page