Donate now to keep alive!Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
What is a mineral?The most common minerals on earthMineral PhotographyThe Elements and their MineralsGeological TimeMineral Evolution
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Starley Mine (Parker prospect), Lawton, Comanche Co., Oklahoma, USA

This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84): 34° 42' 7'' North , 98° 37' 20'' West
Latitude & Longitude (decimal): 34.70197,-98.62229
Köppen climate type:Cfa : Humid subtropical climate

No description has been added for this locality. Can you add one?

Mineral List

7 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

252.17 - 298.9 Ma

ID: 2831825
Post Oak Conglomerate

Age: Permian (252.17 - 298.9 Ma)

Stratigraphic Name: Post Oak Conglomerate

Description: LAWTON- "Post Oak Conglomerate," Ppo, limestone conglomerate near limestone outcrops; contains zeolite-opal ("Tepee Creek Formation") locally, near gabbro and anorthosite outcrops; arkosic gravel and cobbles near igneous outcrops. These rock types are interbedded with sand, silt, clay, and shale, as much as 500 feet (150 m) thick at surface but several thousand feet thick in subsurface, extending down section into Pennsylvanian rocks.

Comments: Named from Post Oak Creek, and from Post Oak Mission in the NE corner of Comanche Co, OK, S. Oklahoma folded belt province, where unit is thick and well developed (Chase, 1954). Present also in southeastern Kiowa and southwestern Caddo Cos, OK. Consists of conglomerate and arkose beds--four distinct litho-facies: 1) granite boulder conglomerate, 2) rhyolite porphyry conglomerate, 3) limestone boulder conglomerate, and 4) conglomerate with zeolite-opal cement. Post Oak is a near-shore facies of lower part of Wichita.

Lithology: Major:{conglomerate}, Minor:{sandstone,siltstone,mudstone,shale}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on 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 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.


Rocks & Minerals (1997): 72(4): 252-264.

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2018, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 23, 2018 00:09:03 Page generated: November 9, 2017 13:21:10
Go to top of page