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Sphaerobismoite

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Formula:
Bi2O3
System:
Tetragonal
Lustre:
Sub-Adamantine
Hardness:
4
Name:
For the form of the aggregates and the composition.
The natural analogue of beta-Bi2O3. A polymorph of bismite.

Classification of Sphaerobismoite

Approved 1993
4.CB.65

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
C : Metal: Oxygen = 2: 3,3: 5, and similar
B : With medium-sized cations
4.3.13.1

4 : SIMPLE OXIDES
3 : A2X3
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Type Occurrence of Sphaerobismoite

Physical Properties of Sphaerobismoite

Sub-Adamantine
Hardness (Mohs):
4

Crystallography of Sphaerobismoite

Crystal System:
Tetragonal
Cell Parameters:
a = 8.02Å, c = 6.46Å
Ratio:
a:c = 1 : 0.805
Unit Cell Volume:
V 415.51 ų (Calculated from Unit Cell)
Z:
4

Optical Data of Sphaerobismoite

Type:
Uniaxial (+)
RI values:
nω = 2.130 nε = 2.180
Max Birefringence:
δ = 0.050
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Very High

Chemical Properties of Sphaerobismoite

Formula:
Bi2O3
Essential elements:
All elements listed in formula:

Relationship of Sphaerobismoite to other Species

4.CB.05BrizziiteNaSb5+O3
4.CB.05CorundumAl2O3
4.CB.05Ecandrewsite(Zn,Fe2+,Mn2+)TiO3
4.CB.05EskolaiteCr2O3
4.CB.05GeikieliteMgTiO3
4.CB.05HematiteFe2O3
4.CB.05IlmeniteFe2+TiO3
4.CB.05KarelianiteV23+O3
4.CB.05MelanostibiteMn2+(Sb5+,Fe3+)O3
4.CB.05PyrophaniteMn2+TiO3
4.CB.05Akimotoite(Mg,Fe2+)SiO3
4.CB.05AuroantimonateAuSbO3
4.CB.05Romanite(◻,Pb,Ca)UFe22+(Ti,Fe3+)6Ti12O38
4.CB.05UM1998-11-O-AuHSbAu2+Sb3+O2(OH)
4.CB.05TistariteTi23+O3
4.CB.10AvicenniteTl2O3
4.CB.10BixbyiteMn23+O3
4.CB.15Armalcolite(Mg,Fe2+)Ti2O5
4.CB.15PseudobrookiteFe2TiO5
4.CB.20Zincohögbomite-2N2S[(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(OH)]2
4.CB.20Zincohögbomite-2N6S[(Zn,Mg)7(Al,Fe3+,Ti)16O31(OH)]2
4.CB.20Magnesiohögbomite-6N6S[(Mg,Fe2+)3(Al,Ti,Fe3+)8O15(OH)]6
4.CB.20Magnesiohögbomite-2N3S[(Mg,Fe2+,Zn)4(Al,Ti,Fe3+)10O19(OH)]2
4.CB.20Magnesiohögbomite-2N2S[(Mg,Fe2+)3[Al7(Ti,Fe3+)]O15(OH)]2
4.CB.20Ferrohögbomite-6N12S[(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6
4.CB.25PseudorutileFe2Ti3O9
4.CB.25KleberiteFeTi6O11(OH)5
4.CB.30BerdesinskiiteV23+TiO5
4.CB.30OxyvaniteV23+V4+O5
4.CB.35Olkhonskite(Cr,V)2Ti3O9
4.CB.35SchreyeriteV23+Ti3O9
4.CB.40KamiokiteFe2Mo3O8
4.CB.40Nolanite(V3+,Fe3+,Fe2+,Ti)10O14(OH)2
4.CB.40RinmaniteZn2Sb2Mg2Fe4O14(OH)2
4.CB.40IseiteMn2Mo3O8
4.CB.40MajindeiteMg2Mo3O8
4.CB.45ClaudetiteAs2O3
4.CB.45StibioclaudetiteAsSbO3
4.CB.50ArsenoliteAs2O3
4.CB.50SénarmontiteSb2O3
4.CB.55ValentiniteSb2O3
4.CB.60BismiteBi2O3
4.CB.70SilléniteBi12SiO20
4.CB.75KyzylkumiteTi2V3+O5(OH)
4.CB.80TietaiyangiteFe43+Fe2+TiO9

Other Names for Sphaerobismoite

Name in Other Languages:

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Sphaerobismoite

Reference List:
Walenta, K. (1995): Sphaerobismoite , a new mineral of composition Bi2O3 from the Schwarzwald. Aufschluss: 46: 245-248. (in German).

Mineralogical Record: 28: 223-224.

Internet Links for Sphaerobismoite

Localities for Sphaerobismoite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Germany (TL)
 
  • Baden-Württemberg
    • Black Forest
      • Calw
Min Rec, 28, (3) & Am. Min. (1996) 81, 514
      • Schenkenzell
        • Wittichen
American Mineralogist, Volume 81, pages 1513-1518. 1996
Mineral and/or Locality  
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