43:
768:
819:
Hatipoğlu, Murat; Türk, Necdet; Chamberlain, Steven C.; Akgün, A. Murat (2010). "Gem-quality transparent diaspore (zultanite) in bauxite deposits of the İlbir
Mountains, Menderes Massif, SW Turkey".
621:
596:
483:. It occurs sometimes as flattened crystals, but usually as lamellar or scaly masses, the flattened surface being a direction of perfect
792:
783:
495:. It may be readily distinguished from other colorless transparent minerals with a perfect cleavage and pearly luster (e.g.
867:
491:
is markedly pearly in character. It is colorless or greyish-white, yellowish, sometimes violet in color, and varies from
726:
89:
862:
237:
492:
476:
260:
118:
857:
852:
104:
176:
White, pale gray, colorless, greenish gray, brown, pale yellow, pink, purple; may exhibit color change
468:
187:
79:
651:
539:
138:
779:
227:
215:
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One or more of the preceding sentences incorporates text from a publication now in the
534:
and other crystalline rocks. Well-developed crystals are found in the emery deposits of the
660:
576:
8:
588:
488:
355:
250:
220:
664:
698:
678:
484:
205:
722:
718:
682:
550:. If obtainable in large quantity, it would be of economic importance as a source of
27:
828:
668:
620:
are trade names for gem-quality diaspore (also known as
Turkish diaspore) from the
512:
416:
288:
270:
195:
65:
527:
42:
535:
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832:
846:
787:
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516:
320:
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111:
58:
796:. Vol. 8 (11th ed.). Cambridge University Press. pp. 168–169.
472:
333:
126:
673:
646:
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crystals; also stalactitic, foliated, scaly, disseminated, and massive
616:
551:
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387:
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It was first described in 1801 for an occurrence in
Mramorsk Zavod,
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meaning "to scatter", in allusion to its decrepitation on heating.
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558:
523:
480:
343:
20:
569:
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Forms heart shaped twins on {021} or pseudohexagonal aggregates
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431:
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Decrepitates releasing water in closed tube on heating
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519:violently, breaking up into white pearly scales.
844:
713:Klein, Cornelis; Hurlbut, Cornelius S. (1985).
522:The mineral occurs as an alteration product of
255:Adamantine, vitreous, pearly on cleavage faces
210:{010} perfect, {110} distinct, {100} in traces
712:
515:is 3.4. When heated before the blowpipe, it
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694:
692:
41:
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471:mineral, α-AlO(OH), crystallizing in the
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565:, is a major component of the aluminium
511:) by its greater hardness of 6.5–7. Its
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706:
689:
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703:
647:"IMA–CNMNC approved mineral symbols"
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13:
26:For the plant seed structure, see
14:
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16:Aluminium hydroxide oxide mineral
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587:. The name, which was coined by
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451:) – also called
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1:
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7:
10:
884:
868:Minerals in space group 62
595:
493:translucent to transparent
265:Transparent to translucent
25:
18:
833:10.1007/s00126-009-0262-2
530:and is found in granular
469:aluminium hydroxide oxide
401:
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40:
35:
467: – is an
19:Not to be confused with
793:Encyclopædia Britannica
780:Spencer, Leonard James
743:"The mineral diaspore"
699:Handbook of Mineralogy
652:Mineralogical Magazine
540:Chester, Massachusetts
863:Orthorhombic minerals
557:Diaspore, along with
394:Other characteristics
90:Strunz classification
715:Manual of Mineralogy
645:Warr, L. N. (2021).
577:Sverdlovskaya Oblast
186:Platy, elongated to
159:= 2.8452(3) Å;
154:= 9.4253(13) Å
821:Mineralium Deposita
674:10.1180/mgm.2021.43
665:2021MinM...85..291W
858:Hydroxide minerals
853:Aluminium minerals
350:Calculated: 80–84°
280:Optical properties
116:Dipyramidal (mmm)
717:(20th ed.).
408:
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146:= 4.4007(6)
28:diaspore (botany)
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642:
599:
546:at Schemnitz in
513:specific gravity
450:
449:
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348:Measured: 84–86°
289:Refractive index
271:Specific gravity
242:
71:
70:(repeating unit)
45:
33:
32:
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721:. p. 318.
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622:İlbir Mountains
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121:: (2/m 2/m 2/m)
117:
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24:
17:
12:
11:
5:
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827:(2): 201–205.
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788:Chisholm, Hugh
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745:. minerals.net
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659:(3): 291–320.
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591:, is from the
589:René Just Haüy
536:Ural Mountains
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307:= 1.705–1.725
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299:= 1.682–1.706
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168:Identification
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163: = 4
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100:Crystal system
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775:public domain
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728:0-471-80580-7
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624:of southwest
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593:Ancient Greek
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487:on which the
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321:Birefringence
318:
315:= 1.730–1.752
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182:Crystal habit
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112:Crystal class
109:
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63:
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59:Oxide mineral
57:
53:
48:
44:
39:
34:
29:
22:
824:
820:
814:
807:Spencer 1911
802:
791:
747:. Retrieved
737:
714:
656:
650:
640:
615:
611:
607:
603:
602:
574:
556:
521:
517:decrepitates
473:orthorhombic
464:
460:
456:
452:
410:
409:
364:
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325:
309:
301:
293:
232:Very brittle
160:
156:
151:
143:
131:
105:Orthorhombic
477:isomorphous
475:system and
334:Pleochroism
283:Biaxial (+)
261:Diaphaneity
127:Space group
847:Categories
749:2014-06-10
632:References
608:ottomanite
465:tanatarite
453:diasporite
402:References
383:Solubility
373:Fusibility
356:Dispersion
238:Mohs scale
221:Conchoidal
119:H–M symbol
80:IMA symbol
782:(1911). "
683:235729616
617:zultanite
612:Turkizite
597:διασπείρω
579:, Middle
552:aluminium
542:, and in
532:limestone
461:kayserite
457:empholite
388:Insoluble
377:Infusible
139:Unit cell
74:α-AlO(OH)
784:Diaspore
563:boehmite
559:gibbsite
524:corundum
485:cleavage
481:goethite
411:Diaspore
344:2V angle
241:hardness
228:Tenacity
216:Fracture
206:Cleavage
196:Twinning
188:acicular
55:Category
36:Diaspore
21:diaspora
790:(ed.).
777::
661:Bibcode
604:Csarite
570:bauxite
548:Hungary
538:and at
505:brucite
328:= 0.048
275:3.1–3.4
245:6.5–7.0
94:4.FD.10
66:Formula
50:General
786:". In
771:
725:
681:
626:Turkey
585:Russia
544:kaolin
509:gypsum
507:, and
489:lustre
367:, weak
338:Strong
251:Luster
719:Wiley
679:S2CID
581:Urals
528:emery
479:with
463:, or
363:<
173:Color
723:ISBN
614:and
561:and
501:talc
497:mica
132:Pbnm
829:doi
669:doi
567:ore
526:or
444:ɔːr
84:Dsp
849::
825:45
823:.
758:^
705:^
691:^
677:.
667:.
657:85
655:.
649:.
628:.
610:,
606:,
583:,
572:.
554:.
503:,
499:,
459:,
455:,
426:aɪ
835:.
831::
809:.
752:.
731:.
685:.
671::
663::
447:/
441:p
438:s
435:ˌ
432:ə
429:.
423:d
420:ˈ
417:/
413:(
365:v
361:r
326:δ
313:γ
310:n
305:β
302:n
297:α
294:n
161:Z
157:c
152:b
148:Å
144:a
30:.
23:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
