29:
387:, produced by carbonation of the serpentinite. Hellyerite forms in this environment in nickel rich serpentinites, which are metamorphosed equivalents of ultramafic
534:
Bette, Sebastian; Rincke, Christine; Dinnebier, Robert E.; Voigt, Wolfgang (2016). "Crystal
Structure and Hydrate Water Content of Synthetic Hellyerite, NiCO
337:. It is light blue to bright green in colour, has a hardness of 2.5, a vitreous luster, a white streak and crystallises in the
604:
341:
system. The crystal habit is as platy and mammillary encrustations on its matrix. It is a pentahydrate according to
93:
200:
223:
599:
594:
568:
Williams KL,Threadgold IM,Hounslow AW. Hellyerite: A new nickel carbonate from
Heazlewoord, Tasmania.
589:
83:
145:
342:
459:
28:
8:
508:
369:
213:
463:
477:
346:
190:
481:
399:. Peridotite and dunite, when fresh, can contain up to ~4,000 ppm nickel within
334:
195:
One perfect, two good at 112° to each other and perpendicular to the perfect cleavage
54:
551:
467:
423:
419:
373:
251:
233:
180:
61:
573:
380:
388:
103:
494:
583:
415:
273:
170:
115:
37:
555:
427:
384:
358:
283:
133:
472:
447:
392:
361:
338:
124:
108:
522:
411:
407:
365:
293:
33:
400:
422:
Company. It is also reported from the Pafuri nickel deposit in
396:
331:
406:
It was first identified in 1958 in the Old Lord Brassy mine,
533:
345:. The solid consists of subunits with an extra pair of
288:
X = Y = very pale greenish blue; Z = pale greenish blue
36:(emerald-green coating), hellyerite (powder-blue) and
368:, another nickel carbonate which is associated with
357:The environment of formation, associated only with
544:Zeitschrift für Anorganische und Allgemeine Chemie
175:As crystal fragments and microcrystalline coatings
581:
471:
152:c = 18.68 ; β = 94°: Z = 8
518:
516:
582:
513:
504:
502:
488:
448:"IMA–CNMNC approved mineral symbols"
445:
418:(1791–1832), Chief Surveyor of the
364:rocks, is diagnostic compared with
13:
499:
379:Hellyerite is observed forming in
185:Fine lamellar parallel to cleavage
14:
616:
27:
562:
527:
439:
1:
433:
352:
495:Hellyerite at Webmineral.com
7:
10:
621:
605:Minerals in space group 15
306:Decomposes on air exposure
570:The American Mineralogist
310:
302:
292:
282:
272:
250:
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222:
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199:
189:
179:
169:
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156:
144:
132:
114:
102:
92:
82:
60:
50:
45:
26:
21:
556:10.1002/zaac.201600044
509:Handbook of Mineralogy
452:Mineralogical Magazine
372:weathering of nickel
343:X-ray crystallography
94:Strunz classification
150:a = 10.77, b = 7.29
600:Monoclinic minerals
473:10.1180/mgm.2021.43
464:2021MinM...85..291W
446:Warr, L.N. (2021).
330:O), is an hydrated
595:Carbonate minerals
572:,1959;44:533–538.
347:water of hydration
243:Optical properties
550:(9–10): 652–659.
335:carbonate mineral
317:
316:
128:
55:Carbonate mineral
16:Carbonate mineral
612:
575:
566:
560:
559:
531:
525:
520:
511:
506:
497:
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486:
485:
475:
443:
424:Limpopo Province
420:Van Diemens Land
414:and named after
252:Refractive index
234:Specific gravity
205:
122:
120:Prismatic (2/m)
67:
66:(repeating unit)
31:
19:
18:
620:
619:
615:
614:
613:
611:
610:
609:
590:Nickel minerals
580:
579:
578:
567:
563:
541:
537:
532:
528:
521:
514:
507:
500:
493:
489:
444:
440:
436:
355:
329:
325:
267:
263:
259:
228:Semitransparent
203:
151:
121:
77:
73:
65:
64:
41:
17:
12:
11:
5:
618:
608:
607:
602:
597:
592:
577:
576:
561:
539:
535:
526:
512:
498:
487:
458:(3): 291–320.
437:
435:
432:
389:cumulate rocks
354:
351:
327:
323:
315:
314:
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308:
307:
304:
300:
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197:
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177:
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167:
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159:
158:
157:Identification
154:
153:
148:
142:
141:
136:
130:
129:
118:
112:
111:
106:
104:Crystal system
100:
99:
96:
90:
89:
86:
80:
79:
75:
71:
68:
58:
57:
52:
48:
47:
43:
42:
40:(light bronze)
32:
24:
23:
15:
9:
6:
4:
3:
2:
617:
606:
603:
601:
598:
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593:
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588:
587:
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574:
571:
565:
557:
553:
549:
545:
530:
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510:
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503:
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479:
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469:
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457:
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449:
442:
438:
431:
429:
425:
421:
417:
416:Henry Hellyer
413:
409:
404:
402:
398:
394:
390:
386:
382:
377:
375:
371:
367:
363:
360:
359:metamorphosed
350:
348:
344:
340:
336:
333:
321:
313:
309:
305:
301:
298:Measured: 85°
297:
295:
291:
287:
285:
281:
277:
275:
274:Birefringence
271:
255:
253:
249:
245:
241:
237:
235:
231:
227:
225:
221:
217:
215:
211:
207:
202:
198:
194:
192:
188:
184:
182:
178:
174:
172:
171:Crystal habit
168:
164:
160:
155:
149:
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143:
140:
137:
135:
131:
126:
119:
117:
116:Crystal class
113:
110:
107:
105:
101:
97:
95:
91:
87:
85:
81:
69:
63:
59:
56:
53:
49:
44:
39:
38:heazlewoodite
35:
30:
25:
20:
569:
564:
547:
543:
529:
490:
455:
451:
441:
428:South Africa
405:
385:serpentinite
381:shear planes
378:
356:
319:
318:
138:
284:Pleochroism
246:Biaxial (−)
224:Diaphaneity
134:Space group
584:Categories
523:Mindat.org
434:References
393:peridotite
362:ultramafic
353:Occurrence
339:monoclinic
320:Hellyerite
311:References
201:Mohs scale
125:H-M symbol
109:Monoclinic
84:IMA symbol
22:Hellyerite
482:235729616
412:Australia
370:supergene
303:Alters to
278:δ = 0.094
264:= 1.503 n
260:= 1.455 n
165:Pale blue
146:Unit cell
408:Tasmania
391:such as
374:sulfides
366:gaspeite
294:2V angle
218:Vitreous
204:hardness
191:Cleavage
181:Twinning
51:Category
34:Zaratite
460:Bibcode
401:olivine
268:= 1.549
98:5.CA.20
62:Formula
46:General
480:
397:dunite
332:nickel
322:, NiCO
214:Luster
123:(same
74:·5.5(H
538:·5.5H
478:S2CID
162:Color
542:O".
395:and
326:·6(H
238:1.97
139:C2/c
70:NiCO
552:doi
548:642
468:doi
403:.
383:in
208:2.5
586::
546:.
515:^
501:^
476:.
466:.
456:85
454:.
450:.
430:.
426:,
410:,
376:.
349:.
88:Hy
78:O)
558:.
554::
540:2
536:3
484:.
470::
462::
328:2
324:3
266:γ
262:β
258:α
256:n
127:)
76:2
72:3
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