Vote for your favorite mineral in #MinCup26! - Cuprite vs. Orpiment
It's a fiery match of vibrant red Cuprite and just as saturated orange Orpiment battle for 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

Hidden Fire Opal Mine (Louisiana Opal Exchange Mine), Vernon Parish, Louisiana, USAi
Regional Level Types
Hidden Fire Opal Mine (Louisiana Opal Exchange Mine)Mine
Vernon ParishParish
LouisianaState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
06124990017272041476080.jpg
Opal

Hidden Fire Opal Mine, Vernon Parish, Louisiana, USA
04300990017272072438294.jpg
Opal

Hidden Fire Opal Mine, Vernon Parish, Louisiana, USA
07345900017272072438825.jpg
Opal

Hidden Fire Opal Mine, Vernon Parish, Louisiana, USA
00379640017272041464616.jpg
Opal

Hidden Fire Opal Mine, Vernon Parish, Louisiana, USA
01668150017272041452925.jpg
Opal

Hidden Fire Opal Mine, Vernon Parish, Louisiana, USA
07345900017272072438825.jpg
Opal

Hidden Fire Opal Mine, Vernon Parish, Louisiana, USA
06124990017272041476080.jpg
Opal

Hidden Fire Opal Mine, Vernon Parish, Louisiana, USA
01668150017272041452925.jpg
Opal

Hidden Fire Opal Mine, Vernon Parish, Louisiana, USA
Latitude & Longitude (WGS84):
31° North , 93° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~46km
GRN:
N21W57
Type:
Mine
Köppen climate type:
Cfa : Humid subtropical climate
Mindat Locality ID:
43623
Long-form identifier:
mindat:1:2:43623:5
GUID (UUID V4):
0


About 15 miles east of Toledo Bend dam. Operated from 1989 to 1993.

Near Monks Hammock.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

ⓘ Hematite
Formula: Fe2O3
ⓘ 'Limonite'
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ Opal var. Precious Opal
Formula: SiO2 · nH2O
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘOpal4.DA.10SiO2 · nH2O
ⓘvar. Precious Opal4.DA.10SiO2 · nH2O
Unclassified
ⓘ'Limonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ OpalSiO2 · nH2O
Hⓘ Opal var. Precious OpalSiO2 · nH2O
OOxygen
Oⓘ HematiteFe2O3
Oⓘ OpalSiO2 · nH2O
Oⓘ QuartzSiO2
Oⓘ Opal var. Precious OpalSiO2 · nH2O
SiSilicon
Siⓘ OpalSiO2 · nH2O
Siⓘ QuartzSiO2
Siⓘ Opal var. Precious OpalSiO2 · nH2O
SSulfur
Sⓘ PyriteFeS2
FeIron
Feⓘ HematiteFe2O3
Feⓘ PyriteFeS2

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
Quick NavTopMineral ListOther Regions
 
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 5, 2026 12:30:36 Page updated: October 30, 2025 02:53:59
Go to top of page