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Carnotite is a bright greenish-yellow mineral that occurs typically as crusts and flakes in sandstones. Amounts as low as one percent will color the sandstone a bright yellow. The high
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The mineral was first described in 1899 by French scientists M. M. C. Freidel and E. Cumenge, who identified it in specimens from
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Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of
Mineralogy, 20th ed., John Wiley and Sons, New York
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Carnotite is an ore of uranium. At times in the early 20th century, it was mined primarily for
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middle
Siwaliks sandstone (Dhokpathan Formation), in the vicinity of Takhat Nasrati,
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176:, b = 8.41 Å, c = 6.91 Å; β = 103.83°; Z = 2
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In the United States it is an important ore of uranium in the
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882:, State of Colorado Mineral Resources Board, p. 330–331.
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Crusts, earthy masses, foliated and granular aggregates.
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Bright yellow to lemon-yellow, may be greenish yellow.
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631:Several related mineral species exist, including:
427:. The water content can vary and small amounts of
40:Carnotite in fossilized wood from St. George, Utah
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874:Robert J. Wright and Donald L. Everhart (1960)
621:quack devices involving radioactive substances
470:content makes carnotite an important uranium
859:
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332:Measured: 43° to 60°, Calculated: 26° to 36°
209:On {001} as both twin and composition plane
880:Mineral Resources of Colorado First Sequel
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497:where it occurs as disseminations in
748:"IMA–CNMNC approved mineral symbols"
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459:Carnotite from the Happy Jack Mine,
252:Dull, earthy; silky when crystalline
727:List of minerals named after people
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592:, United States. It is named for
533:. It also occurs incidentally in
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619:The mineral was used to produce
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505:logs. It also occurs in the
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539:Carbon County, Pennsylvania
219:Perfect on {001}, micaceous
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936:Minerals described in 1899
931:Minerals in space group 14
501:and concentrations around
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590:Montrose County, Colorado
544:Carnotite is reported in
482:mineral usually found in
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568:carnotite occurs in the
19:Not to be confused with
627:Related mineral species
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809:Handbook of Mineralogy
752:Mineralogical Magazine
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864:Mindat with locations
714:Earth sciences portal
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337:Other characteristics
112:Strunz classification
921:Uranium(VI) minerals
596:(1839–1920), French
594:Marie Adolphe Carnot
474:. It is a secondary
926:Monoclinic minerals
773:10.1180/mgm.2021.43
764:2021MinM...85..291W
746:Warr, L.N. (2021).
447:are often present.
16:Radioactive mineral
916:Potassium minerals
580:Name and discovery
535:Grants, New Mexico
486:in arid climates.
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287:Optical properties
911:Vanadate minerals
896:Mineral Galleries
484:sedimentary rocks
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348:, not fluorescent
308:=1.901 – 2.060, n
304:=1.750 – 1.780, n
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722:List of minerals
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546:Congo (Kinshasa)
491:Colorado Plateau
382:chemical formula
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296:Refractive index
278:Specific gravity
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138:Prismatic (2/m)
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64:(repeating unit)
54:Vanadate mineral
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272:Semitransparent
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172:a = 10.47
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890:External links
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181:Identification
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633:margaritasite
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616:or vanadium.
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570:Upper Miocene
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134:Crystal class
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519:South Dakota
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671:tyuyamunite
558:Radium Hill
507:U.S. states
375:radioactive
346:Radioactive
290:Biaxial (−)
268:Diaphaneity
152:Space group
905:Categories
850:Webmineral
839:Mindat.org
733:References
562:Kazakhstan
451:Occurrence
353:References
235:Mohs scale
143:H-M symbol
127:Monoclinic
102:IMA symbol
21:Carnallite
782:235729616
586:Roc Creek
554:Australia
503:petrified
499:sandstone
437:magnesium
366:potassium
362:Carnotite
322:δ = 0.200
168:Unit cell
29:Carnotite
700:See also
673:, (Ca(UO
669:O) and
566:Pakistan
515:Colorado
476:vanadium
372:vanadate
328:2V angle
238:hardness
225:Fracture
215:Cleavage
205:Twinning
51:Category
876:Uranium
760:Bibcode
602:chemist
550:Morocco
527:Arizona
511:Wyoming
480:uranium
468:uranium
429:calcium
378:mineral
369:uranium
116:4.HB.05
60:Formula
46:General
823:
780:
614:radium
564:. In
560:) and
537:, and
529:, and
523:Nevada
445:sodium
443:, and
433:barium
262:yellow
258:Streak
248:Luster
229:uneven
141:(same
878:, in
778:S2CID
380:with
364:is a
186:Color
821:ISBN
696:O).
692:5-8H
654:)(VO
608:Uses
600:and
531:Utah
478:and
461:Utah
441:iron
282:4.70
768:doi
681:(VO
650:(UO
639:,K,
588:in
509:of
472:ore
106:Cnt
81:(VO
72:(UO
907::
856:^
831:^
801:^
776:.
766:.
756:85
754:.
750:.
646:O)
637:Cs
635:((
623:.
604:.
576:.
552:,
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525:,
521:,
517:,
513:,
439:,
435:,
431:,
162:/a
157:P2
92:3H
784:.
770::
762::
694:2
690:·
687:2
685:)
683:4
679:2
677:)
675:2
667:2
665:H
663:·
660:2
658:)
656:4
652:2
648:2
644:3
641:H
556:(
425:O
423:2
421:H
419:3
417:·
414:2
412:)
410:4
408:O
406:V
404:(
402:2
400:)
398:2
395:O
392:U
390:(
388:2
385:K
310:γ
306:β
302:α
300:n
242:2
174:Å
160:1
145:)
96:O
94:2
90:·
87:2
85:)
83:4
78:2
76:)
74:2
70:2
68:K
23:.
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