514:
26:
534:
529:
580:
86:
352:
216:
249:
575:
570:
565:
171:
Crystals tabular {010} to short prismatic also in spherical aggregates, fibrous, massive; orthorhombic pseudo-symmetry
96:
552:
Palache, C., H. Berman, and C. Frondel (1951) Dana’s system of mineralogy, (7th edition), v. II, pp. 677–679
76:
378:. It was first described from complex crystals and as broken fragments in the disintegrated material of a
206:
196:
440:
387:
340:
239:
229:
458:
367:, but, as the refractive index is no higher than that of quartz, they do not make very brilliant
348:
186:
52:
407:
328:
339:
crystals vary from colorless to white or pale yellowish, and are transparent with a vitreous
519:
One or more of the preceding sentences incorporates text from a publication now in the
448:
360:
356:
344:
277:
259:
176:
59:
475:
383:
444:
106:
559:
525:
520:
462:
299:
166:
118:
499:
136:
336:
127:
111:
35:
31:
181:
polysynthetic, contact and penetration twins; pseudo-hexagonal stellate forms
403:
375:
363:
are nα = 1.552, nβ = 1.558 and nγ = 1.561. A few crystals have been cut and
391:
379:
368:
309:
191:{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
453:
428:
25:
538:. Vol. 3 (11th ed.). Cambridge University Press. p. 818.
38:(blue) from Paprok, Nuristan Province, Afghanistan. Specimen size 4 cm
487:
395:
374:
It occurs as a secondary beryllium mineral in granitic and alkalic
399:
364:
347:
is common and occurs in several forms. It exhibits perfect
410:
in 1888, and named beryllonite for its beryllium content.
476:
http://rruff.geo.arizona.edu/doclib/hom/beryllonite.pdf
318:
308:
298:
276:
268:
258:
248:
238:
228:
215:
205:
195:
185:
175:
165:
157:
152:
135:
117:
105:
95:
85:
75:
58:
48:
43:
18:
500:http://www.webmineral.com/data/Beryllonite.shtml
234:Vitreous to adamantine, may be pearly on {010}
8:
452:
419:
15:
7:
429:"IMA–CNMNC approved mineral symbols"
488:http://www.mindat.org/min-644.html
14:
512:
24:
161:Colorless, white to pale yellow
1:
390:where it is associated with
335:. The tabular to prismatic
30:Beryllonite (whitish) with
597:
581:Minerals in space group 14
254:Transparent to translucent
23:
327:Beryllonite is a rare
535:Encyclopædia Britannica
406:. It was discovered by
478:Handbook of Mineralogy
433:Mineralogical Magazine
351:in one direction. The
87:Strunz classification
388:Oxford County, Maine
355:is 5.5 to 6 and the
576:Monoclinic minerals
454:10.1180/mgm.2021.43
445:2021MinM...85..291W
427:Warr, L.N. (2021).
331:with formula NaBePO
97:Dana classification
571:Phosphate minerals
566:Beryllium minerals
361:Refractive indices
269:Optical properties
53:Phosphate minerals
408:James Dwight Dana
329:phosphate mineral
325:
324:
131:
588:
540:
539:
518:
516:
515:
509:
503:
497:
491:
485:
479:
473:
467:
466:
456:
424:
357:specific gravity
278:Refractive index
260:Specific gravity
221:
125:
123:Prismatic (2/m)
65:
64:(repeating unit)
28:
16:
596:
595:
591:
590:
589:
587:
586:
585:
556:
555:
549:
544:
543:
528:, ed. (1911). "
524:
513:
511:
510:
506:
502:Webmineral data
498:
494:
486:
482:
474:
470:
426:
425:
421:
416:
334:
293:
289:
285:
219:
147:
124:
71:
63:
62:
39:
12:
11:
5:
594:
592:
584:
583:
578:
573:
568:
558:
557:
554:
553:
548:
545:
542:
541:
526:Chisholm, Hugh
504:
492:
480:
468:
439:(3): 291–320.
418:
417:
415:
412:
332:
323:
322:
320:
316:
315:
312:
306:
305:
302:
296:
295:
291:
287:
283:
280:
274:
273:
270:
266:
265:
262:
256:
255:
252:
246:
245:
242:
236:
235:
232:
226:
225:
222:
213:
212:
209:
203:
202:
199:
193:
192:
189:
183:
182:
179:
173:
172:
169:
163:
162:
159:
155:
154:
153:Identification
150:
149:
145:
139:
133:
132:
121:
115:
114:
109:
107:Crystal system
103:
102:
99:
93:
92:
89:
83:
82:
79:
73:
72:
69:
66:
56:
55:
50:
46:
45:
41:
40:
29:
21:
20:
13:
10:
9:
6:
4:
3:
2:
593:
582:
579:
577:
574:
572:
569:
567:
564:
563:
561:
551:
550:
546:
537:
536:
531:
527:
522:
521:public domain
508:
505:
501:
496:
493:
489:
484:
481:
477:
472:
469:
464:
460:
455:
450:
446:
442:
438:
434:
430:
423:
420:
413:
411:
409:
405:
401:
397:
393:
389:
385:
381:
377:
372:
370:
366:
362:
358:
354:
350:
346:
342:
338:
330:
321:
317:
313:
311:
307:
303:
301:
300:Birefringence
297:
281:
279:
275:
271:
267:
263:
261:
257:
253:
251:
247:
243:
241:
237:
233:
231:
227:
223:
218:
214:
210:
208:
204:
200:
198:
194:
190:
188:
184:
180:
178:
174:
170:
168:
167:Crystal habit
164:
160:
156:
151:
143:
140:
138:
134:
129:
122:
120:
119:Crystal class
116:
113:
110:
108:
104:
100:
98:
94:
90:
88:
84:
80:
78:
74:
67:
61:
57:
54:
51:
47:
42:
37:
33:
27:
22:
17:
533:
507:
495:
483:
471:
436:
432:
422:
373:
326:
141:
530:Beryllonite
272:Biaxial (−)
250:Diaphaneity
137:Space group
101:38.01.05.01
19:Beryllonite
560:Categories
490:Mindat.org
414:References
376:pegmatites
337:monoclinic
319:References
217:Mohs scale
201:Conchoidal
128:H-M symbol
112:Monoclinic
77:IMA symbol
36:indicolite
32:tourmaline
463:235729616
404:columbite
369:gemstones
304:δ = 0.009
290:= 1.558 n
286:= 1.552 n
394:, smoky
392:feldspar
384:Stoneham
382:vein at
380:granitic
359:is 2.8.
353:hardness
349:cleavage
345:Twinning
310:2V angle
220:hardness
207:Tenacity
197:Fracture
187:Cleavage
177:Twinning
49:Category
34:variety
547:Sources
523::
441:Bibcode
365:faceted
294:= 1.561
224:5.5 – 6
211:Brittle
91:8.AA.10
60:Formula
44:General
517:
461:
396:quartz
341:luster
240:Streak
230:Luster
126:(same
68:NaBePO
459:S2CID
400:beryl
244:White
158:Color
402:and
532:".
449:doi
314:68°
264:2.8
81:Bel
562::
457:.
447:.
437:85
435:.
431:.
398:,
386:,
371:.
343:.
148:/n
465:.
451::
443::
333:4
292:γ
288:β
284:α
282:n
146:1
144:2
142:P
130:)
70:4
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
