142:
735:
36:
141:
1036:
943:
Medicine, Institute of; Practices, Board on
Population Health and Public Health; Effects, Committee on Asbestos: Selected Health (2006-09-23).
954:
1079:
796:
119:
1064:
778:
333:
57:
734:
366:
100:
1074:
766:
72:
1069:
53:
750:. Often referred to as blue asbestos, it is considered the most hazardous. The association between blue asbestos and
918:
518:
showing a diamond-shaped cross section, but also in fibrous, bladed, acicular, columnar, and radiating forms. Its
79:
46:
774:
1084:
1054:
944:
202:
86:
711:
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68:
829:
719:
446:
356:
346:
847:
527:
303:
1059:
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950:
254:
993:
983:
972:"The discovery of the association between blue asbestos and mesotheliomas and the aftermath"
837:
790:
770:
637:
523:
512:
476:
394:
376:
293:
165:
1030:
723:
867:
773:
Micronite cigarette filters, manufactured from March 1952 until at least May 1956 by the
833:
93:
998:
971:
707:
543:
504:
212:
1048:
1025:
851:
715:
653:
581:
519:
416:
283:
224:
569:
Riebeckite typically forms dark-blue elongated to fibrous crystals in highly alkali
146:
Black riebeckite in an alkaline pegmatite from
Lindinosa near Évisa, Corsica, France
758:
751:
625:
621:
551:
17:
781:). Blue asbestos was also used to similar effect, and hazard, in early gas masks.
692:
597:
426:
242:
35:
901:
669:
633:
508:
233:
217:
738:
Crocidolite, variety of riebeckite, from
Pomfret Mine, Vryburg, South Africa
645:
641:
629:
613:
585:
472:
534:; fracture is uneven, splintery. It is often translucent to nearly opaque.
308:
Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
1007:
988:
747:
696:
661:
657:
649:
609:
605:
436:
260:
922:
842:
817:
754:
was established by J. C. Wagner, C. A. Sleggs, and P. Marchand by 1960.
1040:. Vol. 7 (11th ed.). Cambridge University Press. p. 477.
762:
700:
684:
665:
574:
570:
531:
515:
886:
672:
617:
589:
578:
468:
288:
As prismatic crystals, commonly fibrous, asbestiform; earthy, massive
1029:
733:
547:
431:
X = blue, indigo; Y = yellowish green, yellow brown; Z = dark blue
710:
from Moyles Quarry (a.k.a. Canton
Viaduct Quarry) now part of
29:
27:
Sodium-rich member of the amphibole group of silicate minerals
769:. Bolivian crocidolite was used in approximately 13 billion
542:
Riebeckite was first described in 1888 for an occurrence on
278:
Black, dark blue; dark blue to yellow-green in thin section
706:
Riebeckite granite was used for the facing stones of the
507:
series with magnesioriebeckite. It crystallizes in the
793: – List of minerals with Knowledge (XXG) articles
718:, US. The commonwealth's name is even taken from an
455:
445:
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415:
393:
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223:
211:
201:
164:
156:
151:
134:
60:. Unsourced material may be challenged and removed.
726:, which got its color from this form of granite.
699:, is prized for its use in the manufacture of
742:The fibrous forms of riebeckite are known as
530:is perfect, two directions in the shape of a
298:Simple or multiple twinning parallel to {100}
265:c = 5.33 Å; β = 103.59°; Z = 2
8:
441:Measured: 68° to 85°, Calculated: 62° to 78°
746:and are one of the six recognised types of
863:
861:
997:
987:
841:
120:Learn how and when to remove this message
882:
880:
976:Occupational and Environmental Medicine
808:
131:
7:
818:"IMA–CNMNC approved mineral symbols"
58:adding citations to reliable sources
797:List of minerals named after people
757:Crocidolite asbestos was mined in
25:
608:). It occurs in association with
730:Crocidolite (fibrous riebeckite)
550:, and named for German explorer
140:
34:
874:, Mineral Data Publishing, 2001
45:needs additional citations for
779:R. J. Reynolds Tobacco Company
1:
970:Wagner, J. C. (1 June 1991).
557:The mineral is also known as
949:. National Academies Press.
767:Wittenoom, Western Australia
1101:
1080:Minerals in space group 12
946:Asbestos: Selected Cancers
775:Lorillard Tobacco Company
691:, found on the island of
139:
511:system, usually as long
1037:Encyclopædia Britannica
906:The Mineralogy Database
872:Handbook of Mineralogy
822:Mineralogical Magazine
739:
594:banded iron formations
1065:Iron(II,III) minerals
737:
712:Borderland State Park
479:, chemical formula Na
989:10.1136/oem.48.6.399
675:in iron formations.
546:, Aden Governorate,
522:is 5.0–6.0, and its
471:-rich member of the
318:Conchoidal to uneven
54:improve this article
1075:Monoclinic minerals
1031:"Crocidolite"
843:10.1180/mgm.2021.43
834:2021MinM...85..291W
816:Warr, L.N. (2021).
361:Pale to bluish gray
263:, b = 18.04 Å
18:Magnesio-riebeckite
1070:Magnesium minerals
740:
679:Riebeckite granite
538:Name and discovery
386:Optical properties
956:978-0-309-10169-1
919:"IMA Master List"
777:(now part of the
638:metamorphic rocks
477:silicate minerals
462:
461:
351:Vitreous to silky
237:
130:
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104:
16:(Redirected from
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921:. Archived from
915:
909:
908:(webmineral.com)
899:
893:
884:
875:
865:
856:
855:
845:
813:
791:List of minerals
524:specific gravity
395:Refractive index
377:Specific gravity
338:
231:
229:Prismatic (2/m)
171:
170:(repeating unit)
160:Silicate mineral
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62:
38:
30:
21:
1100:
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1085:Sodium minerals
1055:Amphibole group
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732:
724:Great Blue Hill
683:The riebeckite
681:
592:. It occurs in
567:
540:
502:
498:
494:
490:
486:
482:
421:δ = 0.005–0.008
410:
407:= 1.683–1.700 n
406:
403:= 1.680–1.698 n
402:
371:Semitransparent
336:
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1028:, ed. (1911).
1026:Chisholm, Hugh
1020:
1019:External links
1017:
1014:
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982:(6): 399–403.
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708:Canton Viaduct
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544:Socotra Island
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505:solid solution
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270:Identification
267:
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259:a = 9.76
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213:Crystal system
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925:on 2015-01-05
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722:word for the
721:
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716:Massachusetts
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654:stilpnomelane
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626:igneous rocks
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554:(1853–1885).
553:
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533:
529:
525:
521:
520:Mohs hardness
517:
514:
510:
506:
503:. It forms a
478:
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466:
458:
454:
450:
448:
444:
440:
438:
434:
430:
428:
424:
420:
418:
417:Birefringence
414:
411:= 1.685–1.706
398:
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284:Crystal habit
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225:Crystal class
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71: –
70:
66:
65:Find sources:
59:
55:
49:
48:
43:This article
41:
37:
32:
31:
19:
1035:
979:
975:
965:
945:
938:
927:. Retrieved
923:the original
913:
905:
902:"Riebeckite"
897:
890:
887:"Riebeckite"
871:
868:"Riebeckite"
825:
821:
811:
759:South Africa
756:
752:mesothelioma
743:
741:
705:
688:
682:
622:arfvedsonite
601:
577:, rarely in
568:
558:
556:
552:Emil Riebeck
541:
526:is 3.0–3.4.
464:
463:
247:
116:
110:January 2024
107:
97:
90:
83:
76:
69:"Riebeckite"
64:
52:Please help
47:verification
44:
744:crocidolite
695:in western
693:Ailsa Craig
670:chalcedonic
640:; and with
602:crocidolite
598:asbestiform
559:crocidolite
427:Pleochroism
389:Biaxial (−)
367:Diaphaneity
243:Space group
1049:Categories
929:2014-05-12
891:Mindat.org
803:References
720:Algonquian
634:actinolite
586:pegmatites
584:, granite
565:Occurrence
509:monoclinic
465:Riebeckite
456:References
447:Dispersion
334:Mohs scale
234:H-M symbol
218:Monoclinic
203:IMA symbol
135:Riebeckite
80:newspapers
852:235729616
687:known as
646:magnetite
642:grunerite
630:tremolite
614:nepheline
582:volcanics
513:prismatic
475:group of
473:amphibole
381:3.28–3.44
255:Unit cell
1060:Asbestos
785:See also
748:asbestos
703:stones.
697:Scotland
662:siderite
658:ankerite
650:hematite
632:, ferro-
610:aegirine
606:asbestos
600:variety
575:syenites
571:granites
528:Cleavage
516:crystals
437:2V angle
337:hardness
324:Tenacity
314:Fracture
304:Cleavage
294:Twinning
157:Category
1008:2064978
999:1035386
830:Bibcode
763:Bolivia
701:curling
689:ailsite
685:granite
666:calcite
628:; with
596:as the
532:diamond
328:Brittle
166:Formula
152:General
94:scholar
1006:
996:
953:
850:
765:, and
673:quartz
618:albite
604:(blue
590:schist
579:felsic
469:sodium
451:Strong
357:Streak
347:Luster
232:(same
96:
89:
82:
75:
67:
848:S2CID
548:Yemen
467:is a
275:Color
101:JSTOR
87:books
1004:PMID
951:ISBN
771:Kent
588:and
499:(OH)
248:C2/m
194:(OH)
73:news
994:PMC
984:doi
838:doi
714:in
636:in
624:in
491:)Si
483:(Fe
207:Rbk
186:)Si
178:(Fe
56:by
1051::
1034:.
1002:.
992:.
980:48
978:.
974:.
904:,
889:,
879:^
870:,
860:^
846:.
836:.
826:85
824:.
820:.
761:,
668:,
664:,
660:,
656:,
652:,
648:,
644:,
620:,
616:,
612:,
573:,
561:.
497:22
487:Fe
192:22
182:Fe
174:Na
1010:.
986::
959:.
932:.
854:.
840::
832::
501:2
495:O
493:8
489:2
485:3
481:2
409:γ
405:β
401:α
399:n
341:6
261:Å
236:)
196:2
190:O
188:8
184:2
180:3
176:2
123:)
117:(
112:)
108:(
98:·
91:·
84:·
77:·
50:.
20:)
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