37:
546:
Schmidt, Horst; Paschke, Iris; Freyer, Daniela; Voigt, Wolfgang (1 December 2011). "Water channel structure of bassanite at high air humidity: crystal structure of CaSO 4 ·0.625H 2 O".
621:
655:
650:
614:
114:
670:
607:
230:
645:
433:. This reflects the incorporation of additional water of hydration, such that the trigonal form has the formula CaSO
665:
640:
414:
335:
660:
422:
104:
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220:
210:
489:
563:
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H. Schmidt and coinvestigators reported in 2011 that under dry conditions, the structure is
258:
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129:
21:
523:
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395:
391:
380:. It was named for Italian paleontologist Francesco Bassani (1853–1916).
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Microscopic acicular crystals in parallel aggregates, pseudohexagonal
407:
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Bassanite was first described in 1910 for an occurrence on
595:
365:
O. In other words it has half a water molecule per CaSO
41:
White radial-acicular bassanite crystals from Kimba,
548:
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406:. It also occurs interlayered with gypsum in
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622:
608:
383:At Vesuvius it occurs as alterations from
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505:
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421:, but at 75% humidity, the structure is
398:deposits. It occurs in dry lake beds in
524:Bassanite in the Handbook of Mineralogy
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26:
519:
517:
7:
583:
581:
460:"IMA–CNMNC approved mineral symbols"
656:Minerals in space group 152 or 154
594:. You can help Knowledge (XXG) by
14:
35:
586:This article about a specific
1:
535:Bassanite data on Webmineral
371:calcium sulfate hemihydrate
687:
580:
15:
651:Minerals in space group 5
560:10.1107/S0108768111041759
301:Dehydrates on heating to
34:
369:unit, hence its synonym
16:Not to be confused with
510:Bassanite on Mindat.org
464:Mineralogical Magazine
671:Sulfate mineral stubs
115:Strunz classification
646:Monoclinic minerals
485:10.1180/mgm.2021.43
476:2021MinM...85..291W
458:Warr, L.N. (2021).
250:Optical properties
164:= 12.6712 Å,
154:= 12.0317 Å,
603:
602:
425:with space group
417:with space group
315:
314:
159:= 6.9269 Å,
45:, South Australia
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666:Geology of Italy
641:Sulfate minerals
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350:
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259:Refractive index
241:Specific gravity
205:Twin plane {101}
94:
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72:
71:(repeating unit)
39:
27:
686:
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588:sulfate mineral
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325:sulfate mineral
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269:= 1.550–1.559,
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235:Semitransparent
172: = 12
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60:Sulfate mineral
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25:
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661:Mount Vesuvius
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554:(6): 467–475.
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470:(3): 291–320.
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378:Mount Vesuvius
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177:Identification
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125:Crystal system
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43:Eyre Peninsula
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32:
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13:
10:
9:
6:
4:
3:
2:
683:
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589:
584:
579:
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536:
531:
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327:with formula
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286:
283:= 1.577–1.584
282:
275:
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191:Crystal habit
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74:
68:
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54:
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44:
38:
33:
28:
23:
19:
596:expanding it
585:
577:
551:
547:
541:
530:
467:
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453:
426:
418:
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382:
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370:
317:
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277:
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263:
169:
165:
161:
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151:
253:Biaxial (+)
231:Diaphaneity
137:Space group
635:Categories
445:References
415:monoclinic
400:California
309:References
276:= 1.560,
168:= 90.27°;
141:C2 (No. 5)
130:Monoclinic
105:IMA symbol
22:Bassanitae
494:235729616
404:Australia
318:Bassanite
303:anhydrite
298:Alters to
245:2.69–2.76
147:Unit cell
30:Bassanite
568:22101536
423:trigonal
396:fumarole
392:tephrite
357:or 2CaSO
289:2V angle
201:Twinning
56:Category
18:basanite
472:Bibcode
437:·0.625H
394:and as
389:leucite
387:within
349:
337:
322:calcium
119:7.CD.45
93:
81:
67:Formula
51:General
566:
492:
385:gypsum
293:10–15°
221:Streak
215:Earthy
211:Luster
590:is a
490:S2CID
408:caves
320:is a
225:White
185:White
182:Color
592:stub
564:PMID
402:and
329:CaSO
75:CaSO
556:doi
480:doi
441:O.
109:Bss
20:or
637::
562:.
552:67
550:.
516:^
502:^
488:.
478:.
468:85
466:.
462:.
431:21
427:P3
419:C2
410:.
373:.
361:·H
623:e
616:t
609:v
598:.
570:.
558::
496:.
482::
474::
439:2
435:4
429:2
367:4
363:2
359:4
355:O
353:2
351:H
346:2
343:/
340:1
334:·
331:4
280:γ
278:n
273:β
271:n
266:α
264:n
170:Z
166:β
162:c
157:b
152:a
99:O
97:2
95:H
90:2
87:/
84:1
79:·
77:4
24:.
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