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crystal form. It is usually colourless, like quartz, but can also be either pale yellow or yellowish-brown. It typically occurs in contact
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417:. The clarity, resilience, and strong dispersion of danburite make it valuable as cut stones for jewelry.
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Fluorescent and thermoluminescent (red); Short UV=violet blue; Long UV=blue to blue-green
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590:. Vol. 7 (11th ed.). Cambridge University Press. p. 793.
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The Dana classification of minerals categorizes danburite as a
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Colourless, white, gray, brownish white, straw yellow
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178:Euhedral prismatic crystals; disseminated masses
413:; however, topaz is a calcium fluorine bearing
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409:Its crystal symmetry and form are similar to
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518:"Danburite in The Handbook of Mineralogy"
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33:Cluster of creamy crystals of danburite
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459:"IMA–CNMNC approved mineral symbols"
618:. You can help Knowledge (XXG) by
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155:c = 7.73 ; Z = 4
610:This article about a specific
1:
506:Danburite data on Webmineral
439:, ≈ 4 cm in height
387:of 3.0. The mineral has an
153:a = 8.038(3), b = 8.752(5)
711:
685:Minerals in space group 62
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251:Transparent to translucent
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587:Encyclopædia Britannica
198:Subconchoidal to uneven
665:Silicate mineral stubs
463:Mineralogical Magazine
440:
680:Orthorhombic minerals
434:
90:Strunz classification
16:Tectosilicate mineral
690:Luminescent minerals
422:Danbury, Connecticut
484:10.1180/mgm.2021.43
475:2021MinM...85..291W
457:Warr, L.N. (2021).
100:Dana classification
441:
383:of 7 to 7.5 and a
311:88 to 90° measured
266:Optical properties
231:Vitreous to greasy
126:Dipyramidal (mmm)
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581:"Danburite"
393:metamorphic rocks
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287:= 1.630 – 1.636 n
283:= 1.627 – 1.633 n
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670:Calcium minerals
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612:silicate mineral
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523:. Archived from
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420:It is named for
385:specific gravity
362:chemical formula
358:silicate mineral
275:Refractive index
257:Specific gravity
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59:(repeating unit)
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435:Danburite from
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321:r < v strong
291:= 1.633 – 1.639
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131:: (2/m 2/m 2/m)
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675:Tectosilicates
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578:, ed. (1911).
576:Chisholm, Hugh
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469:(3): 291–320.
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160:Identification
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110:Crystal system
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48:Tectosilicates
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530:on 2022-05-11
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426:United States
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404:tectosilicate
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381:Mohs hardness
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620:expanding it
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532:. Retrieved
525:the original
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415:nesosilicate
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400:sorosilicate
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389:orthorhombic
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347:
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330:fluorescence
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115:Orthorhombic
327:Ultraviolet
261:2.93 – 3.02
247:Diaphaneity
137:Space group
659:Categories
555:Mindat.org
534:2014-03-24
444:References
339:References
317:Dispersion
214:Mohs scale
188:{001} Poor
129:H-M symbol
80:IMA symbol
695:Gemstones
551:Danburite
493:235729616
379:It has a
348:Danburite
301:δ = 0.006
149:Unit cell
22:Danburite
307:2V angle
217:hardness
204:Tenacity
194:Fracture
184:Cleavage
104:56.3.1.1
44:Category
471:Bibcode
360:with a
352:calcium
221:7 – 7.5
208:Brittle
94:9.FA.65
55:Formula
39:General
491:
437:Mexico
364:of CaB
237:Streak
227:Lustre
165:Colour
614:is a
528:(PDF)
521:(PDF)
489:S2CID
411:topaz
355:boron
350:is a
241:White
616:stub
368:(SiO
142:Pnam
67:(SiO
553:on
479:doi
84:Dbu
63:CaB
661::
584:.
561:^
543:^
487:.
477:.
467:85
465:.
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395:.
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647:e
640:t
633:v
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495:.
481::
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374:2
372:)
370:4
366:2
289:γ
285:β
281:α
279:n
73:2
71:)
69:4
65:2
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
