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26:
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crystal system, and is pale to bright yellow. It is soluble in water, changing the water color to deep orange or orangish-red. In solution copiapite is very acidic. In high concentrations a negative pH can occur, as reported in waters draining from
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471:, by its lack of radioactivity. The only way to differentiate between the minerals in the copiapite group is by
193:
Tabular pseudo-orthorhombic platy crystals, typically in scaly incrustations or granular pulverulent aggregates
463:
because it does not give off an odor when dissolved in water. It can be distinguished from similar appearing
92:
411:
or sulfide-rich coal. Its most common occurrence is as the end member mineral from the rapid oxidation of
501:
Lustrous, micaceous crystals of copiapite to 8 mm on matrix from the
Alcaparrosa Mine, El Loa Province,
494:. Other occurrences are in California, Nevada, and in the filled paleo sinkholes and caves of Missouri.
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Sulfur-yellow to orange when crystalline, greenish-yellow to olive-green when massive
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O). Copiapite can also refer to a mineral group, the copiapite group.
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459:, California. Copiapite can easily be distinguished from native
447:. It is by far the most common mineral in the copiapite group.
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Copiapite was first described in 1833 for an occurrence near
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Copiapite is strictly a secondary mineral forming from the
30:
Copiapite from the Bolesław Mine, Kłodzko
District,
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X = Y = pale yellow to colorless; Z = sulfur-yellow
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450:It rarely occurs as single crystals, is in the
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340:Measured: 45° to 74°, Calculated: 48° to 72°
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170:β = 102.18°, γ = 98.95°; Z = 1
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634:
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7:
562:"IMA–CNMNC approved mineral symbols"
166:a = 7.337 Å, b = 18.76 Å,
509:(sample size: 11.9 × 7.4 × 4.0 cm)
14:
520:
213:Perfect on {010}, imperfect on {
457:Richmond Mine at Iron Mountain
415:. It also occurs rarely with
168:c = 7.379 Å; α = 91.47°,
1:
639:(Nordstrom and Alpers, 1999)
490:. It is sometimes known as
373:mineral with formula: FeFe
227:Irregular/uneven, micaceous
707:
691:Minerals described in 1833
536:Classification of minerals
270:Transparent to translucent
686:Minerals in space group 2
23:
625:Handbook of Mineralogy
566:Mineralogical Magazine
510:
671:Iron(II,III) minerals
528:Earth sciences portal
500:
103:Strunz classification
587:10.1180/mgm.2021.43
578:2021MinM...85..291W
560:Warr, L.N. (2021).
681:Triclinic minerals
511:
503:Antofagasta Region
467:minerals, such as
285:Optical properties
473:X-ray diffraction
419:. It occurs with
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306:= 1.528 – 1.549 n
302:= 1.506 – 1.540 n
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676:Sulfate minerals
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541:List of minerals
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409:sulfide minerals
350:Soluble in water
294:Refractive index
276:Specific gravity
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64:
63:(repeating unit)
52:Sulfate minerals
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609:Mineralienatlas
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492:yellow copperas
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310:= 1.575 – 1.600
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260:Pearly on {010}
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572:(3): 291–320.
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366:is a hydrated
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175:Identification
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113:Crystal system
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316:Birefringence
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203:Contact twins
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189:Crystal habit
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125:Crystal class
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32:Lower Silesia
27:
22:
17:
604:
569:
565:
555:
491:
477:
449:
433:halotrichite
429:fibroferrite
395:
363:
362:
151:
129:Pinacoidal (
421:melanterite
326:Pleochroism
288:Biaxial (+)
266:Diaphaneity
147:Space group
665:Categories
653:Mindat.org
547:References
445:amarantite
398:weathering
355:References
346:Solubility
243:Mohs scale
138:H-M symbol
93:IMA symbol
596:235729616
469:carnotite
452:triclinic
441:butlerite
437:botryogen
417:fumaroles
402:oxidation
364:Copiapite
320:δ = 0.069
280:2.04–2.17
162:Unit cell
118:Triclinic
19:Copiapite
514:See also
425:alunogen
336:2V angle
246:hardness
233:Tenacity
223:Fracture
209:Cleavage
199:Twinning
48:Category
574:Bibcode
484:Atacama
480:Copiapó
465:uranium
371:sulfate
237:Fragile
107:7.DB.35
59:Formula
43:General
594:
461:sulfur
413:pyrite
256:Luster
136:(same
36:Poland
592:S2CID
507:Chile
488:Chile
389:·20(H
250:2.5–3
180:Color
83:·20(H
443:and
406:iron
385:(OH)
368:iron
79:(OH)
67:FeFe
582:doi
404:of
400:or
377:(SO
217:01}
97:Cpi
71:(SO
667::
645:^
631:^
615:^
590:.
580:.
570:85
568:.
564:.
505:,
486:,
482:,
475:.
439:,
435:,
431:,
427:,
423:,
133:)
87:O)
34:,
598:.
584::
576::
391:2
387:2
383:6
381:)
379:4
375:4
308:γ
304:β
300:α
298:n
215:1
155:1
152:P
140:)
131:1
85:2
81:2
77:6
75:)
73:4
69:4
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