scholarly journals Selected geochemical data and geochemical plots from U.S. Department of Energy-National Uranium Resources Evaluation on sediment samples from the Table Mountain 1 degree by 3 degrees Quadrangle, Brooks Range, Alaska

1987 ◽  
Author(s):  
J.B. Cathrall ◽  
Steve McDanal ◽  
A.T. Miesch
Keyword(s):  
Department Of Energy ◽  
Geochemical Data ◽  
Brooks Range ◽  
Sediment Samples ◽  
Table Mountain ◽  
Resources Evaluation

scholarly journals Granulometry, heavy mineral and geochemical studies of stream sediments around Bula, Dass District, Northeast Nigeria

2020 ◽  
Vol 18 ◽  
pp. 63-73
Author(s):  
C. I. Adamu ◽  
E.E. Okon ◽  
D.O. Inyang
Keyword(s):  
Trace Elements ◽  
Stream Sediments ◽  
Stream Sediment ◽  
Heavy Mineral ◽  
Geochemical Data ◽  
Provenance Analysis ◽  
Sediment Samples ◽  
Granulometric Analysis ◽  
Elemental Analyses ◽  
Geochemical Studies

Active stream sediments generally consist of broken-down fragments of pre-existing rocks by the action of river (stream) flow. This makes them target materials for routine geochemical surveys and provenance analysis. Fifteen (15) stream sediment samples were collected in some parts of Bula and its environs, northeastern Nigeria, in order to determine their textural characteristics, heavy mineral and elemental composition. The sediments were subjected to granulometric, heavy mineral and elemental analyses. The result of granulometric analysis show that the streamsediments are poorly to moderately well sorted, very platykurtic to leptokurtic, fine to medium grained and positively skewed. Zircon, rutile and tourmaline are the dominant heavy mineral species occurring in the sediments. The computed Zircon-Tourmaline-Rutile (ZTR) index values for the samples range from 59.18 - 83.53, indicating mineralogical maturity. The geochemical data of the stream sediment samples show that the mean contents of the trace elements [Ti (0.73 ± 0.74%), Fe (0.39±0.19%), Cr (816±639ppm), Ni (258±108ppm), Pb (48±12.37ppm) and Zn (502±126ppm)] were higher than their respective average crustal values except for Fe. Computed threshold values indicate possible mineralization containing Fe and Ti. The elements have variable spatial distribution. The study shows that the trace elements composition of the stream sediments is majorly lithogenic. Because mineralization in rocks and sediments are often characterized by considerable variation in their trace elements contents, the metal concentrations in these sediments are large enough for Ilmenite and Rutile mineralization to be suspected within the study area.

Evaluation of stream sediment data for favourability of uranium mineralization in Tertiary granitic plutons of the Alaska Range

1982 ◽  
Vol 46 (341) ◽  
pp. 475-482 ◽  
Author(s):  
Michael Beyth ◽  
Carlotta McInteer
Keyword(s):  
Source Rock ◽  
Uranium Mineralization ◽  
Surrounding Area ◽  
Alaska Range ◽  
Sediment Samples ◽  
Potential Source ◽  
Potential Source Rock ◽  
Resources Evaluation ◽  
Scientific Laboratory ◽  
Sediment Data

AbstractFavourability of uranium mineralization in six tertiary granitic plutons of the Alaska Range in the Talkeetna and Mt McKinley quadrangles was studied. The uranium concentrations of drainage sediment samples, which were collected and analysed by the Los Alamos Scientific Laboratory for the National Uranium Resources Evaluation, were statistically evaluated and compared to those of the surrounding area using factor and cluster analyses. The results of this study suggest that five of the six plutons under consideration are likely to contain uranium mineralization. These plutons are probably a potential source rock for uranium in the region.

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