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

Canyon group, Brewster County, Texas, USAi
Regional Level Types
Canyon groupShaft
Brewster CountyCounty
TexasState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
29° 20' 36'' North , 103° 42' 21'' West
Latitude & Longitude (decimal):
29.34333,-103.70611
GeoHash:
G#: 9tnqbjg92
GRN:
N20W65
Type:
Shaft
Köppen climate type:
BWh : Hot deserts climate
Nearest Settlements:
PlacePopulationDistance
Study Butte233 (2011)17.2km
Manuel Benavides916 (2014)32.6km
Álamos de San Antonio131 (2013)46.7km
Mindat Locality ID:
41989
Long-form identifier:
mindat:1:2:41989:4
GUID (UUID V4):
0


6 miles west of Terlingua
Development: PROSPECTED 1929-1934. Group of 5 claims.

Geology: shaft sunk through the GRAYSON FORMATION into the DEVILS RIVER LIMESTONE 400 ft drift follows a fault zone along which there has been some movement and alteration of the limestone close to the undulating base of the grayson. The zone contains some iron oxide and calcite, but the only cinnabar reported to have been found was at the bottom of the shaft.

Rock formation(s): Santa Elena Limestone


Ore(s): Solution Collapse At Contact Between Limestone And Clay.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


3 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘCinnabar2.CD.15aHgS
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3

List of minerals for each chemical element

CCarbon
Cⓘ CalciteCaCO3
OOxygen
Oⓘ CalciteCaCO3
FFluorine
Fⓘ FluoriteCaF2
SSulfur
Sⓘ CinnabarHgS
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ FluoriteCaF2
HgMercury
Hgⓘ CinnabarHgS

Other Databases

Link to USGS MRDS:10040141

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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.

References

Yates, R.G. and Thompson, G.A., (1959), Geology and Quicksilver Deposits, Terlingua District, Texas: USGS Prof. Paper 312, 114 P.
CHESTER, J. W., (1965), MERCURY IN TEXAS, in U.S. Bureau of Mines, Mercury Potential in the United States: USBM IC 8252, Ch. 10.
Quick NavTopCommoditiesMineral ListRock TypesOther DatabasesOther RegionsReferences
 
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 09:07:52 Page updated: July 12, 2025 14:07:02
Go to top of page