...Richard L. Reynolds; Martin B. Goldhaber; Donald J. Carpenter* Geochemical and petrographic studies of core samples from the Panna Maria uranium deposit, a roll-type orebody in the Jackson Group (Eocene) in Karnes County, Texas, yield important constraints on the origin of the deposit. Organic...

...Richard L. Reynolds; Martin B. Goldhaber; Donald J. Carpenter Abstract Geochemical and petrographic studies of core samples from the Panna Maria uranium deposit, a roll-type orebody in the Eocene Jackson Group in Karnes County, Texas, yield important information on the origin of the deposit...

...Robert J. Finley; William E. Galloway ABSTRACT Uranium mineralization in the Panna Maria, Texas, area occurs in the Tordilla Sandstone Member of the Eocene upper Jackson Whitsett Formation on the reduced side of a linear alteration front that extends more than 3 mi (5 km) along strike. Two open-pit...

... of Chevron’s Panna Maria mill near Hobson, Texas, are largely responsible for the upswing in production levels. The intermontane basins of Wyoming contain uranium deposits in sandstones of the Paleocene Fort Union Formation and the Eocene Wind River, Wasatch, and Battle Spring Formations. Activity in 1986...

... Mills Operating in United States in 1985 Company Location Remarks Bear Creek Uranium Company Powder River Basin, Wyoming Operated entire year, closed January 1986 Chevron Resources Company Panna Maria, Texas Closed in May Cotter Corporation Canon City, Colorado Operated January...

... , no. 10) continued on a limited scale in 1986. Ore from Chevron Resources’ Mt. Taylor mine in the eastern Ambrosia Lake area was shipped by rail to the company’s Panna Maria mill near Hobson, Texas. After testing the ore at the nearby Homestake mill, all production from Mt. Taylor began being milled...

..., the ore was shipped by rail to Chevron’s Panna Maria mill near Hobson, Texas). The production grade of the Mt. Taylor ore is approximately 0.50% U 3 O 8 . Homestake Mining continued small-scale mining at its Ambrosia Lake Section 23 mine. Both the Homestake and the Quivira Mining mills at Ambrosia...

... discovery in Karnes County. Tenneco’s Cochran No. 1, discovery well for Davy field, was completed through perforations at 11,057–11,130 ft. in the Edwards for an open-flow potential of 6,500 MCFGPD plus 26 bbls. of 53.6° gravity condensate per MMCFG. Development of the oil reserves in Big John, Panna Maria...

... block of an up-to-the-coast fault; thus, this discovery is similar structurally to Fashing, Panna Maria, Person, and Dubose fields. It appears that reservoir characteristics along this trend are closely related to faulting and that reservoir quality changes considerably along these faults. The yield...

... for deeper drilling. The discovery of oil in the Edwards in the still expanding Person field of Karnes County in 1959 stimulated a wave of exploratory drilling along the trend in 1960 resulting in two new Edwards oil fields in Karnes County; one is the Panna Maria field discovered by the Standard of Texas...

..., principally the Eocene Whitsett Formation, the Miocene Catahoula Formation and Oakville Sandstone, and the Pliocene Goliad Sand ( Figure 3 , no. 12). Currently, Chevron Resources Company operates open pit mines and a mill near Panna Maria, Texas. Also in the northern part of the area, IEC Corporation...

... to Chevron’s Panna Maria mill near Hobson, Texas. Everest Minerals has a solution mining plant near Hobson, in Karnes County, and recovers uranium from the Tex-1 project. In Duval County, in the southern part of the area, Malapai Resources continued solution mining production at the Holiday-El Mesquite...

... Panna Maria, Texas. Also in the northern part of the area, IEC Corp. operates a solution mining plant near Three Rivers, Texas, and United States Steel Corp. and United States Steel-Niagara Mohawk operate plants near George West, Texas. In November 1983, Everest Minerals Corp. began operation...

... continue across the faults. Figure 10 shows fault traces and isopachs together. Local thickness anomalies, such as the 130-ft-thick Buda area in the Panna Maria field (just above the title word “Isopach,” Fig. 7 ), probably are apparent and not real, because of the penetration of steeply dipping beds...

... ) Biogenic and nonbiogenic ore-forming processes in the South Texas uranium district: Evidence from the Panna Maria deposit . Economic Geology , 77 , 541 – 556 . Riegler , T. , Beaufort , M.F. , Allard , T. , Pierson-Wickmann , A.C. , and Beaufort , D. ( 2016 ) Nanoscale...

... 2531 ± 21   Ma ; 2516 ± 38   Ma ; 2514 ± 13   Ma LA-ICPMS Verma et al. [ 70 ] Granite Jhansi-Panna 2545 ± 75 ID-TIMS-Rb-Sr whole rock Crawford [ 67 ] Granite Mahoba 2540 ± 7   Ma SHRIMP Kumar et al. [ 41 ] Granitoid Chitrakoot hillock...

...-forming processes in the south Texas uranium district: evidence from the Panna Maria deposit : Economic Geology , v. 77 , p. 541 – 556 . Reynolds , R. L. , N. S. Fishman , R. B. Wanty , and M. B. Goldhaber , 1990 a, Iron sulfide minerals at Cement oil field, Oklahoma...

... district: Evidence from the Panna Maria deposit . Economic Geology , 77 , 541 – 556 . Reynolds , R.L. , Fishman , N.S. , Scott , J.H. , and Hudson , M.R. ( 1986 ) Iron-titanium oxide minerals and magnetic susceptibility anomalies in the Mariano Lake-Lake Valley cores—Constraints...

... in anoxic sediments : AAPG Bulletin , v. 65 , p. 977 – 981 . Reynolds , R. L. , M. B. Goldhaber , and D. J. Carpenter , 1982 , Biogenic and nonbiogenic ore-forming processes in the south Texas uranium district; evidence from the Panna Maria deposit : Economic Geology , v. 77 , p...

.... 755 – 774 . Reynolds , R.L. , Goldhaber , M.B. , and Carpenter , D.J. , 1982 , Biogenic and nonbiogenic ore-forming processes in the south Texas uranium district: Evidence from the Panna Maria deposit : Economic Geology , v. 77 , p. 541 – 556 , doi: 10.2113/gsecongeo.77.3.541...