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was once considered home to the greatest vanadium deposits in the world, including those at Berg Aukas ("OW-cuss"), Abenab ("UB-en-ub"), Baltika ("BUL-tika") and Uitsab ("ATE-sub"). Descloizite and mottramite were the main ore minerals in each of these deposits, which are now exhausted. Other
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The color is deep cherry-red to brown or black, and the crystals are transparent or translucent with a greasy lustre; the streak is orange-yellow to brown; specific gravity 5.9 to 6.2; hardness 31/2. A variety known as
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Boni et al., 2007, Genesis of vanadium ores in the Otavi
Mountainland, Namibia. Economic Geology v.102 p.441-469.
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One or more of the preceding sentences incorporates text from a publication now in the
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is dull green in color; it contains a considerable amount of copper replacing zinc and some
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442:(1817–1897). It occurs as small prismatic or pyramidal crystals, usually forming
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Descloizite specimen from Berg Aukas (Berg Aukus), Namibia, 9.5 x 8.9 x 4.9 cm
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700:. Vol. 8 (11th ed.). Cambridge University Press. p. 91.
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Zoned tabular crystals common, encrustations and plumose aggregates
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Brownish red, red-orange, reddish to blackish brown, nearly black
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450:; also as fibrous encrusting masses with a mammillary surface.
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Superb spear-point bladed crystals of descloizite, Berg Aukas,
438:, in 1854 and named in honor of the French mineralogist
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It was discovered in the Sierra de Córdoba deposit in
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may also be incorporated into the crystal structure.
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488:The Otavi ("O-tarvi") Mountainland of northern
333:is a rare mineral species consisting of basic
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559:"IMA–CNMNC approved mineral symbols"
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461:of lead ores in association with
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141:c = 9.416 ; Z = 4
317:Strong r > v rarely r < v
711:Arsendescloizite on Mindat.org
1:
372:orthorhombic crystal system
784:
768:Minerals described in 1854
763:Minerals in space group 62
426:. Size 3.6 × 3.1 × .9 cm.
184:Irregular, sub-conchoidal
26:
639:"Handbook of Mineralogy"
414:Discovery and occurrence
697:Encyclopædia Britannica
370:, crystallizing in the
563:Mineralogical Magazine
453:Descloizite occurs in
427:
227:Orange to brownish red
758:Orthorhombic minerals
421:
374:and isomorphous with
237:Transparent to opaque
139:a = 7.593, b = 6.057
85:Strunz classification
440:Alfred Des Cloizeaux
584:10.1180/mgm.2021.43
575:2021MinM...85..291W
557:Warr, L.N. (2021).
493:localities are the
402:. There is also an
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252:Optical properties
111:Dipyramidal (mmm)
753:Descloizite group
738:Vanadate minerals
495:Sierra de Cordoba
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644:. Archived from
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538:List of minerals
446:and stalactitic
408:arsendescloizite
406:analogue called
392:cuprodescloizite
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261:Refractive index
243:Specific gravity
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58:
57:(repeating unit)
47:Vanadate mineral
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690:, ed. (1911). "
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624:Webmineral data
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378:. Appreciable
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116:: (2/m 2/m 2/m)
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688:Chisholm, Hugh
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569:(3): 291–320.
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497:in Argentina;
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146:Identification
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748:Lead minerals
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743:Zinc minerals
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683:public domain
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651:on 2021-02-27
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503:Sierra County
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283:Birefringence
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107:Crystal class
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653:. Retrieved
646:the original
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519:Pennsylvania
515:Phoenixville
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463:pyromorphite
457:portions of
452:
444:drusy crusts
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330:
329:
126:
100:Orthorhombic
692:Descloizite
609:Descloizite
499:Lake Valley
331:Descloizite
293:Pleochroism
255:Biaxial (−)
233:Diaphaneity
122:Space group
22:Descloizite
732:Categories
655:2010-11-15
613:Mindat.org
544:References
521:and Obir,
507:New Mexico
475:mottramite
467:vanadinite
448:aggregates
398:replacing
322:References
313:Dispersion
307:85° to 90°
200:Mohs scale
114:H-M symbol
75:IMA symbol
593:235729616
523:Carinthia
483:cerussite
471:wulfenite
436:Argentina
384:germanium
376:olivenite
287:δ = 0.165
273:= 2.265 n
269:= 2.185 n
247:6.1 – 6.2
135:Unit cell
532:See also
479:mimetite
455:oxidised
404:arsenate
400:vanadium
342:vanadate
303:2V angle
203:hardness
190:Tenacity
180:Fracture
170:Cleavage
129:(no. 62)
44:Category
685::
571:Bibcode
526:Austria
511:Arizona
490:Namibia
432:Córdoba
424:Namibia
396:arsenic
380:gallium
297:Visible
277:= 2.350
207:3 – 3.5
194:Brittle
89:8.BH.40
61:(Pb,Zn)
53:Formula
39:General
16:Mineral
679:
591:
223:Streak
217:Greasy
213:Luster
649:(PDF)
642:(PDF)
589:S2CID
459:veins
151:Color
481:and
382:and
339:zinc
337:and
335:lead
174:None
127:Pnma
694:".
611:on
579:doi
517:in
501:in
79:Dcz
734::
664:^
630:^
601:^
587:.
577:.
567:85
565:.
561:.
528:.
513:;
509:;
505:,
485:.
477:,
473:,
469:,
465:,
434:,
410:.
364:VO
360:OH
352:Zn
350:,
348:Pb
344:,
69:OH
65:VO
658:.
595:.
581::
573::
366:4
362:)
358:(
356:2
354:)
346:(
275:γ
271:β
267:α
265:n
67:4
63:2
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
