29:
370:
OH tetrahedra. There are three distinct octahedral sites: M1, M2, and M3. In miguelromeroite's structure, all of the octahedral sites are occupied by magnesium and the average bond lengths for the sites fall within a relatively narrow range. Though the differences in the sites suggest that the sites
352:
attributes, which is an optical phenomenon that makes gems to be seen a different color depending on the axis it is being inspected. Viewing it from the Z axis, the mineral can be seen in a pale pink color. It was redefined as an intermediate species of the series. It is the full magnesium endmember
361:
The mineral's structure is defined by an octahedral edge-sharing pentamer. The pentamers are linked into a loose framework by sharing corners with octahedra in adjacent pentamers and they are further linked through
387:
The samples were from the Veta Negra mine in Chile. Other mines include
Gozaisho mine in Honshu island, Japan, and Mina Ojuela in Mapimi, Durango, Mexico. It's a type locality only in these three mines.
514:"Miguelromeroite, the Mn analogue of sainfeldite, and redefinition of villyaellenite as an ordered intermediate in the sainfeldite-miguelromeroite series"
320:
named for Miguel Romero
Sanchez by Anthony Robert Kampf. The mineral, first described in 2008 was named in 2009, the same year it got approved by the
321:
583:
193:
226:
568:
573:
578:
353:
of the series. Crystals are up to 4 cms in length, and are elongated on with forms {100}, {110} and {101̅}.
87:
183:
528:
418:
345:
216:
206:
544:
458:
436:
341:
173:
140:
536:
426:
254:
163:
51:
532:
513:
422:
97:
28:
562:
440:
280:
109:
548:
349:
290:
127:
333:
116:
102:
337:
540:
300:
485:
431:
406:
376:
317:
236:
44:
344:. It is known as a synthetic compound, and was originally labeled as
372:
348:
due to the very rare complex arsenate microcrystals. It shows
299:
289:
279:
253:
245:
235:
225:
215:
205:
192:
182:
172:
162:
154:
149:
139:
126:
108:
96:
86:
50:
40:
35:
21:
459:"Miguelromeroite mineral information and data"
8:
27:
430:
480:
478:
78:
74:
70:
66:
62:
397:
322:International Mineralogical Association
18:
16:Pale pink mineral - synthetic compound
7:
507:
505:
452:
450:
407:"IMA–CNMNC approved mineral symbols"
371:M2 and M3 contain small amounts of
332:Miguelromeroite is a member of the
14:
1:
600:
584:Minerals described in 2009
512:R. Kampf, Anthony (2009).
457:Minerals, Dakota Matrix.
26:
340:analogue of the mineral
411:Mineralogical Magazine
521:American Mineralogist
158:Salmon pink to orange
541:10.2138/am.2009.3278
527:(11–12): 1535–1540.
463:www.dakotamatrix.com
569:Monoclinic minerals
533:2009AmMin..94.1535K
432:10.1180/mgm.2021.43
423:2021MinM...85..291W
405:Warr, L.N. (2021).
574:Manganese minerals
336:group, and is the
246:Optical properties
579:Arsenate minerals
486:"Miguelromeroite"
311:
310:
591:
553:
552:
518:
509:
500:
499:
497:
496:
482:
473:
472:
470:
469:
454:
445:
444:
434:
402:
255:Refractive index
198:
82:
57:
56:(repeating unit)
31:
19:
599:
598:
594:
593:
592:
590:
589:
588:
559:
558:
557:
556:
516:
511:
510:
503:
494:
492:
484:
483:
476:
467:
465:
456:
455:
448:
404:
403:
399:
394:
385:
369:
365:
359:
330:
314:Miguelromeroite
307:Calculated: 75°
306:
274:
270:
268:
264:
262:
196:
115:
80:
76:
72:
68:
64:
60:
55:
54:
22:Miguelromeroite
17:
12:
11:
5:
597:
595:
587:
586:
581:
576:
571:
561:
560:
555:
554:
501:
490:www.mindat.org
474:
446:
417:(3): 291–320.
396:
395:
393:
390:
384:
381:
367:
363:
358:
355:
346:villyaellenite
329:
326:
309:
308:
305:Measured: 70°
303:
297:
296:
293:
287:
286:
283:
277:
276:
272:
266:
260:
257:
251:
250:
247:
243:
242:
239:
233:
232:
229:
223:
222:
219:
213:
212:
209:
203:
202:
199:
190:
189:
186:
180:
179:
176:
170:
169:
166:
160:
159:
156:
152:
151:
150:Identification
147:
146:
143:
137:
136:
130:
124:
123:
112:
106:
105:
100:
98:Crystal system
94:
93:
90:
84:
83:
58:
48:
47:
42:
38:
37:
33:
32:
24:
23:
15:
13:
10:
9:
6:
4:
3:
2:
596:
585:
582:
580:
577:
575:
572:
570:
567:
566:
564:
550:
546:
542:
538:
534:
530:
526:
522:
515:
508:
506:
502:
491:
487:
481:
479:
475:
464:
460:
453:
451:
447:
442:
438:
433:
428:
424:
420:
416:
412:
408:
401:
398:
391:
389:
382:
380:
378:
374:
356:
354:
351:
347:
343:
339:
335:
327:
325:
323:
319:
315:
304:
302:
298:
294:
292:
288:
284:
282:
281:Birefringence
278:
258:
256:
252:
248:
244:
240:
238:
234:
230:
228:
224:
220:
218:
214:
210:
208:
204:
200:
195:
191:
187:
185:
181:
178:Good on {100}
177:
175:
171:
168:None observed
167:
165:
161:
157:
153:
148:
144:
142:
138:
134:
131:
129:
125:
122:
118:
113:
111:
110:Crystal class
107:
104:
101:
99:
95:
91:
89:
85:
59:
53:
49:
46:
43:
39:
34:
30:
25:
20:
524:
520:
493:. Retrieved
489:
466:. Retrieved
462:
414:
410:
400:
386:
360:
331:
313:
312:
132:
120:
342:sainfeldite
291:Pleochroism
249:Biaxial (−)
231:Transparent
227:Diaphaneity
128:Space group
563:Categories
495:2021-08-09
468:2021-08-09
392:References
350:pleochroic
334:hureaulite
328:Properties
194:Mohs scale
188:Conchoidal
117:H-M symbol
114:Prismatic
103:Monoclinic
88:IMA symbol
441:235729616
357:Structure
338:magnesium
221:Pale pink
141:Unit cell
549:97734557
301:2V angle
269:= 1.723
263:= 1.713
211:Vitreous
197:hardness
184:Fracture
174:Cleavage
164:Twinning
145:1,624.38
41:Category
529:Bibcode
419:Bibcode
377:calcium
366:and AsO
318:mineral
295:Visible
275:= 1.729
237:Density
61:MnS(AsO
52:Formula
45:Mineral
36:General
547:
439:
217:Streak
207:Luster
545:S2CID
517:(PDF)
437:S2CID
383:Mines
316:is a
285:0.016
155:Color
69:(HAsO
375:and
373:zinc
241:3.69
119:: 2/
77:· 4H
537:doi
427:doi
362:AsO
135:2/b
92:Mig
565::
543:.
535:.
525:94
523:.
519:.
504:^
488:.
477:^
461:.
449:^
435:.
425:.
415:85
413:.
409:.
379:.
324:.
551:.
539::
531::
498:.
471:.
443:.
429::
421::
368:3
364:4
273:γ
271:n
267:β
265:n
261:α
259:n
201:4
133:B
121:m
81:O
79:2
75:2
73:)
71:4
67:2
65:)
63:4
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
