Vote for your favorite mineral in #MinCup26! - Arsenuranylite vs. Talc
It's a pair of soft and lovely minerals as Stichtite and Talc compete 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

Kokernot o6 Ranch, Jeff Davis County, Texas, USAi
Regional Level Types
Kokernot o6 RanchVolcanic Province (Extinct)
Jeff Davis CountyCounty
TexasState
USACountry

This page kindly sponsored by Stephen C. Blyskal
PhotosMapsSearch
Latitude & Longitude (WGS84):
30° 33' 48'' North , 103° 37' 24'' West
Latitude & Longitude (decimal):
Type:
Volcanic Province (Extinct) - last checked 2023
Age:
56.0 to 33.9 Ma
Geologic Time:
Mindat Locality ID:
428999
Long-form identifier:
mindat:1:2:428999:2
GUID (UUID V4):
0


110,000 acre ranch stretching from just north of Alpine, Texas in Brewster County to north of Wild Rose Pass in Jeff Davis County. Ranch has over 125 documented occurrences of chalcedony, fortification agate, moss agate, plume agate and calcite.

Note: "o6" is the cattle brand mark for that ranch.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Detailed Mineral List:

Quartz
Formula: SiO2
Quartz var. Agate
Formula: SiO2
Quartz var. Chalcedony
Formula: SiO2
Quartz var. Fortification Agate
Formula: SiO2
Quartz var. Moss Agate
Formula: SiO2
Quartz var. Plume Agate
Formula: SiO2

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz
var. Agate
4.DA.05SiO2
var. Chalcedony4.DA.05SiO2
var. Moss Agate4.DA.05SiO2
4.DA.05SiO2
var. Fortification Agate4.DA.05SiO2
var. Plume Agate4.DA.05SiO2

List of minerals for each chemical element

OOxygen
O Quartz var. AgateSiO2
O Quartz var. ChalcedonySiO2
O Quartz var. Moss AgateSiO2
O QuartzSiO2
O Quartz var. Fortification AgateSiO2
O Quartz var. Plume AgateSiO2
SiSilicon
Si Quartz var. AgateSiO2
Si Quartz var. ChalcedonySiO2
Si Quartz var. Moss AgateSiO2
Si QuartzSiO2
Si Quartz var. Fortification AgateSiO2
Si Quartz var. Plume AgateSiO2

Other Regions, Features and Areas containing this locality


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.
 
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 8, 2026 01:46:09 Page updated: June 5, 2026 22:59:12
Go to top of page