29:
480:(the lengths of the sides of the unit cell) vary in detail according to the source, but all agree that normal plumbogummite has "a" close to 7 Å and "c" close to 17 Å, with Z=3. Various reported values of "a" and "c"are:
522:
octahedra, aluminium atoms (Al) at the center and oxygen atoms at the corners. The tetrahedra and octahedra combine by sharing corners, to form composite layers. Lead atoms (Pb) occupy sites between the layers.
464:
Plumbogummite was discovered in 1819 and named in 1832 from the Latin "plumbum" for lead, and "gummi" for gum, in allusion to its lead content and appearance, which at times resembles coatings of gum.
869:
879:
95:
229:
262:
603:
854:
874:
864:
592:
105:
540:
584:
85:
859:
613:, Bolivia, is an unusual pale yellow color, rather than the more common blue or green, forming crusts on
219:
209:
658:
426:
606:, Australia, but it is generally inconspicuous there and only a few specimens have been collected.
252:
242:
625:
676:
199:
44:
518:, with phosphorus atoms (P) at the center and oxygen atoms (O) at the corners, together with AlO
599:
477:
400:
362:
531:
Plumbogummite is found in the oxidized zones of lead-bearing deposits. It commonly occurs as
772:
666:
598:
Plumbogummite has been found in the
Central Cobar Mines, New South Wales, Australia and the
290:
272:
51:
539:
or globular crusts or masses, frequently with a concentric structure; rare crystals have a
839:
662:
115:
848:
722:
680:
189:
127:
544:
171:
28:
503:, Namibia, and found larger cell parameters, with a = 7.0752 Å and c = 16.818 Å.
618:
552:
370:
322:
150:
622:
536:
532:
515:
332:
138:
610:
572:
568:
564:
588:
556:
450:
120:
671:
646:
560:
496:
366:
704:
614:
548:
500:
746:
Gaines et al (1997) Dana's New
Mineralogy Eighth Edition, Wiley
551:
are commonly associated minerals, and plumbogummite may be
595:
is stored in the
Natural History Museum, Paris, France.
628:
crystals with orange colored shells of plumbogummite.
602:, Western Australia. Also in the Kintore open cut at
373:
subgroup. Some other members of this subgroup are:
349:
341:
331:
321:
289:
281:
271:
261:
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241:
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218:
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198:
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149:
126:
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104:
94:
84:
50:
40:
35:
21:
511:The basic structural units of plumbogummite are PO
285:Uniaxial (+), segments of crystals may be biaxial
817:Australian Journal of Mineralogy 3-1, 32 and 50
555:after them. Other associated minerals include
8:
790:Mineralogical Magazine (2009) 73(5), 837–845
472:Plumbogummite crystallizes in space group R
808:Australian Journal of Mineralogy 12-1, 28
799:Australian Journal of Mineralogy 11-2, 77
670:
718:
716:
714:
712:
700:
698:
696:
694:
692:
690:
194:Crystals, rare, have a hexagonal outline
826:Mineralogical Record 37-2, 127 and 148
637:
591:, Finistère, Brittany, France, and the
487:c = 16.71Å, 16.75 Å, 16.784 Å, 16.789 Å
742:
740:
738:
736:
734:
732:
730:
18:
768:
766:
764:
762:
760:
758:
756:
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752:
484:a = 7.01 Å, 7.017 Å, 7.018 Å, 7.033 Å
16:Alunite supergroup, phosphate mineral
7:
786:
784:
782:
780:
647:"IMA–CNMNC approved mineral symbols"
499:-rich sample of plumbogummite from
609:Material from the Siglio XX Mine,
14:
317:= 1.742 for Ga-rich plumbogummite
423:O, where strontium replaces lead
345:Non-fluorescent, not radioactive
27:
457:replaces the phosphate group PO
840:The structure of Plumbogummite
397:O, where calcium replaces lead
184:Blue, grey, greenish or yellow
1:
604:Broken Hill, New South Wales
870:Minerals in space group 166
896:
880:Minerals described in 1832
361:is a rare secondary lead
306:= 1.675 or 1.675 to 1.704
299:= 1.653 or 1.653 to 1.688
132:Hexagonal scalenohedral (
26:
369:supergroup of minerals,
214:Uneven or sub-conchoidal
773:Handbook of Mineralogy
651:Mineralogical Magazine
621:, and enclosing crude
342:Other characteristics
96:Strunz classification
337:Soluble in hot acids
672:10.1180/mgm.2021.43
663:2021MinM...85..291W
645:Warr, L.N. (2021).
365:, belonging to the
237:4 to 5 or 4.5 to 5
106:Dana classification
855:Phosphate minerals
478:lattice parameters
282:Optical properties
45:Phosphate minerals
875:Crandallite group
865:Trigonal minerals
600:Nifty Copper Mine
535:, kidney shaped,
377:Crandallite, CaAl
363:phosphate mineral
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476:m. The reported
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291:Refractive index
273:Specific gravity
247:Resinous or dull
234:
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57:
56:(repeating unit)
31:
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723:Webmineral data
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834:External links
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657:(3): 291–320.
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166:Identification
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116:Crystal system
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860:Lead minerals
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593:type material
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585:type locality
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553:pseudomorphic
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452:
449:O, where the
428:
425:
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359:Plumbogummite
352:
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326:
324:
320:
313:= 1.722 and n
308:
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190:Crystal habit
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128:Crystal class
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59:
53:
49:
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43:
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34:
30:
25:
22:Plumbogummite
20:
822:
813:
804:
795:
654:
650:
640:
626:jeanbandyite
608:
597:
582:
545:Pyromorphite
530:
510:
492:
490:
471:
463:
358:
357:
301:
176:581.14 g/mol
172:Formula mass
155:
619:cassiterite
537:stalactitic
527:Environment
371:crandallite
323:Pleochroism
267:Translucent
263:Diaphaneity
151:Space group
849:Categories
705:Mindat.org
632:References
623:octahedral
579:Occurrence
533:botryoidal
516:tetrahedra
350:References
333:Solubility
230:Mohs scale
139:H-M symbol
86:IMA symbol
681:235729616
611:Llallagua
573:wulfenite
569:anglesite
565:cerussite
543:outline.
541:hexagonal
507:Structure
468:Unit cell
453:group AsO
589:Huelgoat
557:mimetite
451:arsenate
401:Goyazite
233:hardness
220:Tenacity
210:Fracture
200:Cleavage
121:Trigonal
110:42.7.3.5
41:Category
659:Bibcode
561:duftite
497:gallium
367:alunite
224:Brittle
100:8.BL.10
52:Formula
36:General
679:
615:quartz
549:baryte
501:Tsumeb
493:et al.
491:Mills
429:, PbAl
403:, SrAl
253:Streak
243:Luster
677:S2CID
277:4.014
257:White
181:Color
617:and
583:The
571:and
547:and
441:(OH)
433:(AsO
415:(OH)
389:(OH)
327:None
204:None
145:2/m)
72:(OH)
60:PbAl
667:doi
587:is
407:(PO
381:(PO
141:: (
136:m)
90:Pbg
64:(PO
851::
779:^
751:^
729:^
711:^
689:^
675:.
665:.
655:85
653:.
649:.
575:.
567:,
563:,
559:,
445:·H
419:·H
393:·H
76:·H
683:.
669::
661::
520:6
513:4
474:3
459:4
455:4
447:2
443:5
439:2
437:)
435:4
431:3
421:2
417:5
413:2
411:)
409:4
405:3
395:2
391:5
387:2
385:)
383:4
379:3
315:e
311:o
309:n
304:e
302:n
297:o
295:n
161:m
159:3
156:R
143:3
134:3
80:O
78:2
74:5
70:2
68:)
66:4
62:3
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