rare earth elements in Wyoming

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56 figure 21. Location of phosphate-related samples included in this report. Sample sites with enrichment of greater than five times crustal abundance in one or more REE are shown in red.
distinct horizons (plus one unit within the underlying Tipton Shale Member), and four uraniferous phosphatic zones (UPZs) in the NE¼SW¼ sec. 10, T. 17 N., R. 106 W. (table 19). The UPZs in the lower part of the Wilkins Peak tend to be more enriched in uranium and phosphate (up to 0.15 percent uranium and 18.2 percent P 2 O 5 ) than those higher in the member. Scarce, dark green to black, REE-bearing carbonate minerals within the Wilkins Peak Member include burbankite, mckelveyite, and ewaldite (Milton and others, 1965; Milton, 1971). Love (1964) noted the presence of REE-bearing minerals in his UPZs 1, 2, and 57 2a (numbered from the bottom), as well as in a trona bed. The lower UPZs commonly host greater than 0.1 percent REE, but the enrichment is not homogenous and significant lateral variation is observed (King and Harris, 2002). UPZs are not lithologically distinct from the surrounding rocks and are best identified through the use of radiation detecting equipment. A Geiger counter was not available during sampling of the I-80 on-ramp and Lulu claims (see below); therefore, field identification at those sites was based table 19. Measured section of the lower part of the Wilkins Peak Member of the Green River Formation by Love (1964), Lulu claim #2, southwest of Rock Springs. Bed Description Thickness (m) (ft) 14 Oil shale, dark-brown, laminated, hard; weathers white; UPZ 3 0.15 0.5 13 Shale, gray, soft, fissile 3.35 11.0 12 Gray, very hard, massive, medium-grained sandstone; weathers rusty brown; out crops as ledge that breaks into angular blocks that are conspicuous down slope; regionally identifiable, known as the Firehole bed. 0.12 0.4 11 Shale, claystone, and siltstone, gray to greenish-gray, chippy; moderately hard, but forms slope 4.88 16.0 10 Dolomitic marlstone, tan, slabby, hard, fissile; forms ledge 0.61 2.0 9 Claystone and silstone, green, blocky, slightly radioactive near top; UPZ 2a occurs about 1 m below the top, but is not lithologically distinct 2.74 9.0 8 Dolomitic marlstone, tan, hard, slabby, fissile; weathers gray; forms ledge 1.52 5.0 7 Claystone and silstone, green, blocky; forms slope; UPZ 2 occurs about 1 m below top, but is not litholigically distinct 3.35 11.0 6 Shale and marlstone, greenish-gray, hard, fissile; forms slope 1.52 5.0 5 Dolomitic marlstone, gray, hard, thin-bedded, fissile; weathers tan; interbedded with gray, soft, fissile calcareous shale; forms slope broken by thin ledges 9.14 30.0 4 Dolomitic marlstone, bluish-gray; weathers rusty brown at top; top 1.5 m forms widespread hard brown ledge that comprises most radioactive part of UPZ 1 2.44 8.0 3 Shale, gray, marly, soft, fissile 0.91 3.0 2 Marly sandy siltstone, gray, hard slabby, fissile; weathers brown, forms weak ledge; base of Wilkins Peak Member 1.83 6.0 1 Oil shale, dark brown, fissile, thin bedded; weathers gray; top of Tipton Shale 4.3+ 14+
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are earth elements in Wyoming Wayne
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Rare Earth Elements in Wyoming Wyom
Page 6 and 7:
Deacon’s Prayer Group Claims . .
Page 9 and 10:
AbstrAct Rare earth elements (REE)
Page 11 and 12:
Wyo-DOG is a multi-tiered applicati
Page 13 and 14: neodymium-145 through electron capt
Page 15 and 16: ability and economic factors, inclu
Page 17 and 18: Gosen, Foley, and Cordier, 2010). T
Page 19 and 20: Extraction of rEE Aside from genera
Page 21 and 22: diorites, and their associated pegm
Page 23 and 24: REE deposit in Wyoming and is curre
Page 25 and 26: 17 figure 1. Locations of samples c
Page 27 and 28: accessory aegirine, apatite, stront
Page 29 and 30: Precambrian occurrences Precambrian
Page 31 and 32: 23 figure 5. Sample locations and g
Page 33 and 34: table 6. Concentration of the REE,
Page 35 and 36: the Tie Siding pegmatites. The alte
Page 37 and 38: coarse-grained granite (QAP: 30% Q,
Page 39 and 40: lbs) for 1957 and 450 kg (1,000 lbs
Page 41 and 42: granite to granodiorite with rapaki
Page 43 and 44: 35 figure 10. Sample locations and
Page 45 and 46: table 10. Concentration of the REE,
Page 47 and 48: tertiary-aged Igneous occurrences L
Page 49 and 50: downstream from older REE mineral c
Page 51 and 52: 43 figure 15. Locations of 1952 USB
Page 53 and 54: samples 20110824WS-C and 20110824WS
Page 55 and 56: Samples of the Flathead were collec
Page 57 and 58: tourmaline, amphibole, spinel, sphe
Page 59 and 60: Mud creek, nW¼nE¼ sec. 19, t. 44
Page 61 and 62: figure 20. Sample locations and geo
Page 63: interaction between oxidized ground
Page 67 and 68: figure 22. Sample locations and lit
Page 69 and 70: 1977; Love, 1984). REE concentratio
Page 71 and 72: figure 26. Dahllite concretions fro
Page 73 and 74: Moonstone Formation Reefs, SW¼SE¼
Page 75 and 76: EfErEncEs Adams, J.W., Arengi, J.T.
Page 77 and 78: logical Survey of Wyoming [Wyoming
Page 79 and 80: Love, J.D., 1964, Uraniferous phosp
Page 81 and 82: Saywell, T., 2011, Molycorp’s Mou
Page 83 and 84: IndEx A Abandoned Mine Lands 2 acmi
Page 85 and 86: f fergusonite 12, 13, 33 Ferris Mou
Page 87 and 88: monazite 1, 11, 12, 13, 14, 15, 18,
Page 89 and 90: strontianite 18, 19 Stump Formation
Page 91: notes
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