722:
29:
619:
763:
172:
Crystalline – fine – occurs as well-formed fine sized crystals; massive – uniformly indistinguishable crystals forming large masses
623:
807:
756:
700:
666:
812:
749:
514:
387:
217:
263:
802:
658:
474:
371:
55:
787:
782:
443:
128:
38:
207:
197:
570:
637:
8:
595:
341:
253:
243:
797:
187:
792:
696:
662:
427:
737:
729:
489:
467:
291:
273:
177:
62:
484:, b = 12.95 Å, c = 7.14 Å, and β = 116°. Optically, the material exhibits biaxial
690:
652:
477:
733:
409:
86:
776:
485:
481:
459:
374:. It is considered a barium-rich potassium feldspar. Its chemical formula is
321:
167:
134:
98:
721:
149:
431:
182:
Commonly simple twins according to the
Carlsbad, Manebach, or Baveno laws
116:
34:
455:
107:
91:
544:
463:
439:
418:
412:
521:
367:
331:
28:
447:
654:
Rock-Forming
Minerals: Volume 4A: Framework Silicates: Feldspars
430:, Imfield, Binn valley, municipality of Binn, Canton of Valais,
435:
513:= 1.547 and a maximum birefringence of δ = 0.005. It has weak
451:
426:
An occurrence of hyalophane was discovered in 1855 in
774:
650:
651:Deer, W. A.; Howie, R. A.; Zussman, J. (2001).
757:
695:. Sterling Publishing Company. p. 56.
764:
750:
139:c = 7.14 Å; β = 116°; Z = 4
27:
614:
612:
610:
563:
688:
539:
537:
520:Hyalophane has sometimes been used as a
434:. The mineral is found predominantly in
682:
775:
607:
366:is a crystalline mineral, part of the
534:
716:
644:
438:, with occurrences in Switzerland,
13:
14:
824:
640:. Britannica Online Encyclopedia.
720:
551:. Hudson Institute of Mineralogy
480:, with cell properties a = 8.52
728:This article about a specific
630:
588:
192:{001} perfect, {010} imperfect
1:
527:
462:. Hyalophane may be found in
162:Colorless, yellow, white, red
736:. You can help Knowledge by
659:Geological Society of London
419:
413:
16:Barium-rich feldspar mineral
7:
10:
829:
808:Minerals in space group 12
715:
268:Transparent to translucent
689:Schumann, Walter (1977).
603:, Mineral Data Publishing
571:"Hyalophane Mineral Data"
350:
340:
330:
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290:
282:
272:
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252:
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216:
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196:
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85:
61:
51:
46:
26:
21:
517:and low surface relief.
458:, and the west coast of
417:, meaning "glass", and
813:Silicate mineral stubs
692:Gemstones of the World
376:(K,Ba)[Al(Si,Al)Si
72:(K,Ba)[Al(Si,Al)Si
39:Bosnia and Herzegovina
423:meaning "to appear".
466:deposits in compact
137:, b = 12.95 Ă…,
33:Hyalophane crystal (
803:Monoclinic minerals
283:Optical properties
745:
744:
473:Hyalophane has a
468:metamorphic zones
428:Lengenbach Quarry
357:
356:
111:
820:
766:
759:
752:
730:silicate mineral
724:
717:
707:
706:
686:
680:
679:
677:
675:
657:(2nd ed.).
648:
642:
641:
634:
628:
627:
622:. Archived from
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560:
558:
556:
541:
490:refractive index
422:
416:
403:
402:
398:
395:
385:
292:Refractive index
274:Specific gravity
238:
237:
233:
230:
222:
105:
103:Prismatic (2/m)
81:
68:
67:(repeating unit)
31:
19:
18:
828:
827:
823:
822:
821:
819:
818:
817:
788:Barium minerals
773:
772:
771:
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703:
687:
683:
673:
671:
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661:. p. 928.
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478:crystallography
408:comes from the
400:
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386:, and it has a
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138:
104:
79:
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71:
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65:
42:
17:
12:
11:
5:
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815:
810:
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800:
795:
790:
785:
783:Tectosilicates
769:
768:
761:
754:
746:
743:
742:
725:
709:
708:
702:978-1454909538
701:
681:
667:
643:
629:
626:on 2006-09-01.
606:
587:
575:Webmineral.com
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372:tectosilicates
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146:
145:
144:Identification
141:
140:
133:a = 8.52
131:
125:
124:
119:
113:
112:
101:
95:
94:
89:
87:Crystal system
83:
82:
77:
73:
69:
59:
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53:
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48:
44:
43:
32:
24:
23:
15:
9:
6:
4:
3:
2:
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748:
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739:
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731:
726:
723:
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698:
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685:
670:
668:9781862390812
664:
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591:
576:
572:
566:
550:
546:
540:
538:
533:
525:
523:
518:
516:
512:
506:= 1.545, and
505:
498:
491:
487:
486:birefringence
483:
479:
476:
471:
469:
465:
461:
460:North America
457:
453:
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445:
441:
437:
433:
429:
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411:
407:
389:
373:
369:
365:
361:
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349:
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329:
325:
323:
322:Birefringence
319:
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168:Crystal habit
165:
161:
157:
153:
151:
147:
142:
136:
132:
130:
126:
123:
120:
118:
114:
109:
102:
100:
99:Crystal class
96:
93:
90:
88:
84:
70:
64:
60:
57:
56:Tectosilicate
54:
50:
45:
40:
36:
30:
25:
20:
738:expanding it
727:
712:
691:
684:
672:. Retrieved
653:
646:
638:"Hyalophane"
632:
624:the original
620:"Hyalophane"
596:
590:
578:. Retrieved
574:
565:
553:. Retrieved
548:
545:"Hyalophane"
519:
507:
500:
493:
472:
425:
405:
364:jaloallofane
363:
359:
358:
310:
303:
296:
154:302.06 g/mol
150:Formula mass
121:
432:Switzerland
404:. The name
286:Biaxial (-)
264:Diaphaneity
117:Space group
777:Categories
674:2 December
597:Hyalophane
549:Mindat.org
528:References
515:dispersion
492:values of
475:monoclinic
456:New Jersey
406:hyalophane
360:Hyalophane
351:References
342:Dispersion
218:Mohs scale
202:Conchoidal
108:H-M symbol
92:Monoclinic
22:Hyalophane
798:Gemstones
499:= 1.542,
464:manganese
440:Australia
370:group of
326:δ = 0.005
309:= 1.545,
302:= 1.542,
129:Unit cell
793:Feldspar
522:gemstone
390:of 6 to
388:hardness
368:feldspar
336:48 – 79°
332:2V angle
248:Vitreous
221:hardness
208:Tenacity
198:Fracture
188:Cleavage
178:Twinning
52:Category
35:BusovaÄŤa
488:, with
448:Germany
399:⁄
316:= 1.547
234:⁄
212:Brittle
63:Formula
47:General
699:
665:
580:11 May
555:11 May
444:Bosnia
436:Europe
420:phanos
414:hyalos
254:Streak
244:Luster
106:(same
732:is a
601:(PDF)
452:Japan
410:Greek
258:White
159:Color
734:stub
697:ISBN
676:2016
663:ISBN
582:2016
557:2016
346:Weak
278:2.81
225:6 –
122:C2/m
362:or
779::
609:^
573:.
547:.
536:^
524:.
470:.
454:,
450:,
446:,
442:,
37:,
765:e
758:t
751:v
740:.
705:.
678:.
584:.
559:.
510:Îł
508:n
503:β
501:n
496:α
494:n
482:Ă…
401:2
397:1
394:+
392:6
384:]
382:8
380:O
378:2
313:Îł
311:n
306:β
304:n
299:α
297:n
236:2
232:1
229:+
227:6
135:Ă…
110:)
80:]
78:8
76:O
74:2
41:)
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