CĂRȚI ÎN ENGLEZĂ ÎN LEGĂTURĂ CU «COFFINITE»
Descoperă întrebuințarea
coffinite în următoarea selecție bibliografică. Cărți în legătură cu
coffinite și extrase din aceasta pentru a furniza contextul de întrebuințare al acestuia în literatura Engleză.
1
Energy, Waste and the Environment: A Geochemical Perspective
coffinite and ningyoite is impossible, whereas substantial solid solution between
coffinite and xeno- time is likely to occur (Finch & Murakami 1999). Such P- REE-
rich coffinite has already been described for the Gabon natural nuclear reactors ...
R. Gieré, Peter Stille, 2004
2
Geological Survey Professional Paper
Uranium has been assigned a valence value of +4 because both uraninite and
coffinite are historically considered to be ... Coffinite compositions are in the
range: UO2, 76.9 to 82.3 weight percent; CaO, 1.0 to 2.4 weight percent; and
SiO2, ...
3
Bedrock Geology of the Coventry Center Quadrangle, Rhode Island
At a later stage, pitchblende and coffinite were deposited virtually
contemporaneously, generally in company with quartz and pyrite, although some
pyrite was deposited after the uranium minerals also. In some sections of the ores
, pitchblende ...
George Emerson Moore, 1963
4
The Ore Minerals Under the Microscope: An Optical Guide
Coffinite. Geologic Environment: Reflection Colour: Internal Reflections:
Reflectance [%]: sediment impregnations, replacements of uraninite dark grey
often none, occasionally greenish to yellow to orange [4] Bireflectance:
Anisotropy: ...
5
Mineral Deposits at the Beginning of the 21st Century
A. Piestrzynski. calcite, pyrite, sphalerite, galena, barite, fluorite, and minor
coffinite II; -low temperature alterations (argilitization), and formation of secondary
minerals Uranium mineralization is therefore developed in several
morphologically ...
6
Uranium Deposits Of The World
Pitchblende and coffinite exhibit a colloform habit, have shrinkage cracks, and
contain appreciable amounts of Ca and Si, and occasionally Fe. In pitchblende–
coffinite veinlets, the pyrite–marcasite volume ratio is about 8:1, and essentially
all ...
7
United States Geological Survey Professional Paper
The minerals uraninite, coffinite, and thorite have been found in some nodules,
but in many the uranium-bearing compound, which may be an organometallic
complex, has not been identified. The trace-metal suite of the asphaltite is similar
to ...
8
Systematic Mineralogy of Uranium and Thorium
X-ray powder data, given in the table below, indicate that coffinite is tetragonal
and iso- structural with zircon. The unit-cell dimensions of material from the
Arrowhead mine, Mesa County, Colo., are a0 6.94 A, c0 6.31 A ; o0:c0=l:0.908.
The cell ...
9
Mineral Deposit Research: Meeting the Global Challenge: ...
Data of the electron microprobe and X-ray powdered crystal analysis show that
uranium minerals are mainly coffinite, minor brannerite and uraniferous Ti-Fe
oxides. According to electron microprobe data, the composition of coffinite is:
UO2 ...
Jingwen Mao, Frank P. Bierlein, 2008
10
Thermodynamics, Solubility and Environmental Issues
-15 -10 -5 0 5 10 -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 UO2(am)Uraninite Coffinite(am)
Coffinite S a t u r a t i o n I n d e x Eh (V) common occurrences in U deposits.
Associated thermodynamic data refer to pure crystalline or amorphous phases,
and are ...
ȘTIRI NOI CARE INCLUD TERMENUL «COFFINITE»
Află ce ziare naționale și internaționale au scris despre și cum este întrebuințat termenul
coffinite în contextul următoarelor știri.
Niger – Africa's Rising Uranium Hotspot
... of roll-front type, either reduced consisting of pitchblende and coffinite (Akouta, Arlit, Afasto, Madaouela) or oxidized minerals (Imouraren). «InvestorIntel, Iun 15»
NexGen Drills 40.45m Off-Scale within 190.7m of Total Composite …
... and fracture hosted pitchblende and coffinite. A total composite mineralization of 190.7 m including 40.45 m of off-scale radioactivity (>10,000 ... «Canada NewsWire, Apr 15»
JORC Resource Statement for Slovakia
Uraninite is the most dominant uranium mineral, with lesser amounts of coffinite accompanied by abundant fine-grained molybdenite (MoS2). «Marketwired, Ian 15»
Burmese Tycoon Tay Za Claims Uranium Unearthed in Burma
According to the World Nuclear Association, there are two main minerals in which uranium is naturally found: uraninite and coffinite. Tay Za ... «The Irrawaddy News Magazine, Ian 15»
How Uranium Could Be Dangerous to Human Life
... specimens of uranium minerals in their collection such as pitchblende, uraninite, autunite, uranophane or coffinite which may emit radiation. «AllAfrica.com, Nov 14»
NexGen Drills Record Total Composite Off-Scale of 53.85 m, within …
... with dense semi-massive to massive uranium mineralization (uraninite and coffinite), which resembles the high-grade uranium mineralization ... «Canada NewsWire, Aug 14»
Eclipse Metals highlights high grade uranium potential, Northern …
Petrographic studies of the ore from Devil's Elbow identified uraninite as the primary uranium mineral with minor coffinite. Geological mapping ... «Proactive Investors Australia, Dec 13»
New nuclear plant is an opportunity to revitalise British manufacturing
... pitchblende, carnotite and coffinite. These ores are a finite resource which are costly to extract and transport and do not exist in commercial ... «Telegraph.co.uk, Oct 13»
Athabasca Basin: Uranium Exploration Abounds
The deposit is mostly pitchblende and coffinite uranium occurring as fracture and breccia fillings, Unity's website states. The company also has ... «Uranium Investing News, Aug 13»
Toro Energy cashed up to advance Wiluna Uranium project to …
Given the high quality and speed of uranium extraction, it is likely that the mineralisation at Theseus consists primarily of uraninite and coffinite, ... «Proactive Investors Australia, Mar 12»
