1149:
1121:
47:
334:), receiving in a later work the name derived from this locality. In 1994 the International Mineralogical Association decided to disapprove it as a valid mineral, since it was considered indistinguishable from quartz. Subsequent studies allowed the IMA to rectify it in 1999, accepting it as a mineral species. It has the same
369:
region below 650 cm. Above this wavenumber, the frequencies of Si–O stretching vibrations of moganite are almost identical to those of quartz. Additional moganite bands were recorded near 165, 207, 296, 343, 419, 576, and 612 cm.
412:
is a multistage process. Although hydrogen loss starts below 400–500 K (127–227 °C), hydrous species may well remain in moganite even at 1,060 K (790 °C).
603:
Grice, Joel D.; Ferraris, Giovanni (2000). "New minerals approved in 1999 by the commission on new minerals and mineral names, International
Mineralogical Association".
1190:
318:) that was discovered in 1976. It was initially described as a new form of silica from specimens found in the Barranco de Medio Almud, in the municipality of
840:
393:
736:
Heaney, Peter J.; Post, Jeffrey E. (2001). "Evidence for an I2/a to Imab phase transition in the silica polymorph moganite at ~570 K".
638:
Heaney, Peter J.; Post, Jeffrey E. (1992). "The
Widespread Distribution of a Novel Silica Polymorph in Microcrystalline Quartz Varieties".
1214:
1183:
116:
1234:
1176:
201:
833:
234:
1209:
1229:
1224:
126:
478:
349:. It has been reported from a variety of locations in Europe, India and the United States. Physically, it has a
826:
381:
1219:
106:
362:
549:
Flörque, O.W.; Jones, J.B.; Schmincke, H.U. (1976). "A new microcrystalline silica from Gran
Canaria".
1030:
796:
745:
702:
647:
612:
442:
335:
224:
214:
761:
718:
671:
460:
404:, the spectra are not completely identical. Absorptions in the O–H stretching region reveal that
568:
Flörque, O.W.; Flörque, U.; Giese, U. (1984). "Moganite, a new microcristaline silica-mineral".
1020:
913:
860:
663:
339:
1160:
384:
data for moganite from 100 to 1,354 K (−173 to 1,081 °C) has revealed a reversible
1156:
1091:
804:
753:
710:
655:
620:
450:
385:
302:
262:
244:
89:
1148:
1125:
946:
849:
409:
315:
31:
808:
157:
800:
749:
706:
651:
616:
446:
1101:
980:
959:
327:
136:
1203:
464:
350:
298:
191:
148:
77:
722:
675:
1096:
873:
765:
323:
56:
779:
Zhang, Ming; Moxon, Terry (2012). "In situ infrared spectroscopic studies of OH, H
659:
1025:
405:
389:
378:
346:
166:
1106:
1035:
1002:
921:
898:
893:
624:
366:
141:
1063:
1015:
954:
903:
757:
535:
667:
345:
This mineral has been mainly found in dry locales such as Gran
Canaria and
689:
Zhang, Ming; Moxon, Terry (2014). "Infrared absorption spectroscopy of SiO
353:
of about 6, a dull luster and appears as a semitransparent gray in color.
1086:
1081:
714:
591:
319:
52:
455:
430:
17:
1058:
878:
868:
852:
305:
507:
1073:
936:
888:
392:
I2/a to Imab at approximately 570 K (297 °C). The in-situ
308:
81:
46:
1010:
985:
931:
926:
818:
401:
331:
60:
1050:
1040:
964:
822:
365:(IR) differences between moganite and α-quartz occur in the
1164:
586:
Origlieri, M., 1994. "Moganite: a New
Mineral – Not!"
1072:
1049:
1001:
994:
973:
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912:
859:
285:
261:
253:
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200:
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182:
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165:
147:
135:
125:
115:
105:
88:
73:
68:
39:
27:
Silica mineral, rare monoclinic polymorph of quartz
508:"Moganite: Moganite Mineral Information and Data"
1184:
834:
570:Neues Jahrbuch für Mineralogie (Abhandlungen)
400:O and OH in moganite display similarities to
8:
396:shows that while the thermal responses of H
1191:
1177:
998:
841:
827:
819:
45:
454:
530:
528:
501:
499:
421:
394:Fourier transform infrared spectroscopy
592:http://geopress.rbnet.net/moganite.htm
36:
7:
1145:
1143:
479:"Mineralienatlas Lexicon – Mogánite"
431:"IMA–CNMNC approved mineral symbols"
787:in moganite at high temperatures".
1163:. You can help Knowledge (XXG) by
506:Ralph, Jolyon; Ralph, Ida (2007).
25:
1147:
1119:
809:10.1127/0935-1221/2011/0023-2165
551:Zeitschrift für Kristallographie
1155:This article about a specific
789:European Journal of Mineralogy
51:Moganite. Medio Almud ravine,
1:
660:10.1126/science.255.5043.441
374:Structural phase transition
338:as quartz, but a different
1251:
1215:Minerals in space group 15
1142:
29:
1115:
625:10.2113/gscanmin.38.1.245
605:The Canadian Mineralogist
44:
382:X-ray powder diffraction
30:Not to be confused with
758:10.2138/am-2001-11-1204
1235:Silicate mineral stubs
435:Mineralogical Magazine
357:Structural information
738:American Mineralogist
695:American Mineralogist
363:infrared spectroscopy
117:Strunz classification
744:(11–12): 1358–1366.
715:10.2138/am.2014.4589
336:chemical composition
1210:Monoclinic minerals
1126:Minerals portal
801:2012EJMin..24..123Z
750:2001AmMin..86.1358H
707:2014AmMin..99..671Z
652:1992Sci...255..441H
617:2000CaMin..38..245G
456:10.1180/mgm.2021.43
447:2021MinM...85..291W
429:Warr, L.N. (2021).
127:Dana classification
254:Optical properties
1230:Silicon compounds
1225:Silica polymorphs
1172:
1171:
1137:
1136:
1133:
1132:
1021:Chrome chalcedony
995:Notable varieties
914:Cryptocrystalline
646:(5043): 441–443.
536:"Webmineral data"
340:crystal structure
322:on the island of
292:
291:
161:
16:(Redirected from
1242:
1193:
1186:
1179:
1157:silicate mineral
1151:
1144:
1124:
1123:
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1092:Herkimer diamond
999:
843:
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386:phase transition
303:chemical formula
263:Refractive index
245:Specific gravity
206:
155:
153:Prismatic (2/m)
95:
94:(repeating unit)
49:
37:
21:
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483:Mineralienatlas
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410:dehydroxylation
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316:silicon dioxide
313:
279:
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204:
154:
101:
93:
92:
64:
35:
32:Morganite (gem)
28:
23:
22:
15:
12:
11:
5:
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1220:Oxide minerals
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1102:Shocked quartz
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968:
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960:Lechatelierite
957:
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929:
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865:
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838:
831:
823:
815:
814:
795:(1): 123–131.
784:
780:
771:
728:
701:(4): 671–680.
690:
681:
630:
611:(1): 245–250.
595:
579:
560:
541:
524:
495:
470:
441:(3): 291–320.
420:
419:
417:
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375:
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328:Canary Islands
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178:Identification
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137:Crystal system
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974:Miscellaneous
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351:Mohs hardness
348:
343:
341:
337:
333:
329:
325:
321:
317:
310:
307:
304:
300:
299:oxide mineral
296:
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192:Crystal habit
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176:
173:
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149:Crystal class
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130:
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120:
118:
114:
110:
108:
104:
97:
91:
87:
83:
79:
78:Tectosilicate
76:
72:
67:
63:. Height 5cm.
62:
58:
54:
48:
43:
38:
33:
19:
1165:expanding it
1154:
1139:
1117:
1097:Smoky quartz
883:
874:Cristobalite
792:
788:
774:
741:
737:
731:
698:
694:
693:-moganite".
684:
643:
639:
633:
608:
604:
598:
590:. Aug. 2007
587:
582:
573:
569:
563:
554:
550:
544:
515:. Retrieved
511:
486:. Retrieved
482:
473:
438:
434:
424:
377:
360:
344:
324:Gran Canaria
294:
293:
275:
267:
219:Earthy, dull
171:
57:Gran Canaria
1026:Chrysoprase
981:Tiger's eye
861:Crystalline
588:Lithosphere
406:dehydration
390:space group
379:Synchrotron
347:Lake Magadi
249:2.52 – 2.58
239:Transparent
235:Diaphaneity
167:Space group
131:75.01.04.02
1204:Categories
1107:Prasiolite
1036:Moss agate
1031:Heliotrope
1003:Chalcedony
922:Chalcedony
899:Stishovite
894:Seifertite
576:: 325–336.
557:: 156–165.
416:References
367:wavenumber
286:References
202:Mohs scale
158:H–M symbol
142:Monoclinic
107:IMA symbol
1064:Geyserite
1016:Carnelian
955:Fulgurite
947:Amorphous
904:Tridymite
488:13 August
465:235729616
361:The main
326:, in the
301:with the
1087:Ametrine
1082:Amethyst
884:Moganite
853:minerals
783:O and CO
723:56255006
676:32497622
668:17842895
517:1 August
295:Moganite
205:hardness
74:Category
40:Moganite
18:Mogánite
1059:Fiorite
879:Keatite
869:Coesite
797:Bibcode
766:6093768
746:Bibcode
703:Bibcode
648:Bibcode
640:Science
613:Bibcode
443:Bibcode
281:= 1.531
273:= 1.524
257:Biaxial
196:Massive
121:4.DA.20
90:Formula
69:General
1074:Quartz
937:Jasper
889:Quartz
850:Silica
764:
721:
674:
666:
512:MinDat
463:
297:is an
225:Streak
215:Luster
156:(same
82:quartz
1159:is a
1011:Agate
986:Aqeeq
932:Flint
927:Chert
762:S2CID
719:S2CID
672:S2CID
461:S2CID
402:agate
388:from
332:Spain
320:Mogán
229:White
183:Color
84:group
61:Spain
53:Mogán
1161:stub
1051:Opal
1041:Onyx
965:Opal
664:PMID
519:2007
490:2023
408:and
186:Grey
172:I2/a
805:doi
754:doi
711:doi
656:doi
644:255
621:doi
574:149
555:143
451:doi
111:Mog
98:SiO
1206::
803:.
793:24
791:.
760:.
752:.
742:86
740:.
717:.
709:.
699:99
697:.
670:.
662:.
654:.
642:.
619:.
609:38
607:.
572:.
553:.
527:^
510:.
498:^
481:.
459:.
449:.
439:85
437:.
433:.
342:.
306:Si
80:,
59:,
55:,
1192:e
1185:t
1178:v
1167:.
842:e
835:t
828:v
811:.
807::
799::
785:2
781:2
768:.
756::
748::
725:.
713::
705::
691:2
678:.
658::
650::
627:.
623::
615::
538:.
521:.
492:.
467:.
453::
445::
398:2
330:(
314:(
312:2
309:O
278:γ
276:n
270:α
268:n
209:6
160:)
100:2
34:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
