Sphaerobismoite
A valid IMA mineral species
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About Sphaerobismoite
Formula:
Bi2O3
Colour:
Green, pale yellow, gray
Lustre:
Sub-Adamantine
Hardness:
4
Specific Gravity:
7.17 (Calculated)
Crystal System:
Tetragonal
Name:
For the form of the aggregates and the composition.
Co-Type Localities:
Dimorph of:
Unique Identifiers
Mindat ID:
7308
Long-form identifier:
mindat:1:1:7308:6
GUID
(UUID V4):
(UUID V4):
cac9505e-04e2-4eb9-a791-f0f7ebc9be3b
IMA Classification of Sphaerobismoite
Approved
Approval year:
1993
Classification of Sphaerobismoite
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 : 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
4 : SIMPLE OXIDES
3 : A2X3
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Sbm | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Sphaerobismoite
Sub-Adamantine
Transparency:
Transparent
Colour:
Green, pale yellow, gray
Comment:
Semitransparent
Streak:
White
Hardness:
4 on Mohs scale
Fracture:
Conchoidal
Density:
7.17 g/cm3 (Calculated)
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.
and does not take into account mineral colouration.
Surface Relief:
Very High
Chemistry of Sphaerobismoite
Mindat Formula:
Bi2O3
Elements listed:
Common Impurities:
As
Crystallography of Sphaerobismoite
Crystal System:
Tetragonal
Cell Parameters:
a = 8.02(2) Å, c = 6.46(2) Å
Ratio:
a:c = 1 : 0.805
Unit Cell V:
415.51 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space group P42/n or P42212. Synthetic material is reported to have space group P-421c (Blower & Greaves, 1988).
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0010069 | Sphaerobismoite | Blower S K, Greaves C (1988) The structure of beta-Bi2O3 from powder neutron diffraction data Acta Crystallographica C44 587-589 |  | 1988 | synthetic | 0 | 293 |
| 0015771 | Sphaerobismoite | Gattow G, Schutze D (1964) Uber Wismutoxide. VI. Uber ein Wismut(III)-oxid mit hoherem sauerstoffgehalt (beta-modifikation) Zeitschrift fur Anorganische und Allgemeine Chemie 328 44-68 | 1964 | synthetic | 0 | 293 | |
| 0015772 | Sphaerobismoite | Gattow G, Schutze D (1964) Uber Wismutoxide. VI. Uber ein Wismut(III)-oxid mit hoherem sauerstoffgehalt (beta-modifikation) Zeitschrift fur Anorganische und Allgemeine Chemie 328 44-68 | 1964 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.16 Å | (100) |
| 5.73 Å | (70) |
| 1.902 Å | (60) |
| 3.44 Å | (50) |
| 2.02 Å | (50) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Sphaerobismoite
Co-Type Localities:
General Appearance of Type Material:
Tabular, crystals to 20 µm, tetragonal outline possible, forming spherulitic aggregates.
Place of Conservation of Type Material:
n.d.
Geological Setting of Type Material:
Oxidation product of wittichenite and emplectite.
Associated Minerals at Type Locality:
Synonyms of Sphaerobismoite
Other Language Names for Sphaerobismoite
Common Associates
Associated Minerals Based on Photo Data:
| 2 photos of Sphaerobismoite associated with Bismuthinite | Bi2S3 |
| 1 photo of Sphaerobismoite associated with Tyrolite | Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O |
Related Minerals - Strunz-mindat Grouping
| 4.CB. | Ferrohögbomite-2N2S | [(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2 |
| 4.CB. | Magnesiohögbomite-6N12S | Mg5Al11TiO23(OH) |
| 4.CB. | Zhenruite | (MoO3)2 · H2O |
| 4.CB. | Pengite | (Pb8Sb3+3)Σ11Sb5+9O35 |
| 4.CB. | Virgilluethite | MoO3 · H2O |
| 4.CB.05 | Brizziite | NaSb5+O3 |
| 4.CB.05 | Corundum | Al2O3 |
| 4.CB.05 | Ecandrewsite | (Zn,Fe2+,Mn2+)TiO3 |
| 4.CB.05 | Eskolaite | Cr2O3 |
| 4.CB.05 | Geikielite | MgTiO3 |
| 4.CB.05 | Hematite | Fe2O3 |
| 4.CB.05 | Ilmenite | Fe2+TiO3 |
| 4.CB.05 | Karelianite | V3+2O3 |
| 4.CB.05 | Melanostibite | Mn2+2Fe3+Sb5+O6 |
| 4.CB.05 | Pyrophanite | Mn2+TiO3 |
| 4.CB.05 | Akimotoite | (Mg,Fe2+)SiO3 |
| 4.CB.05 | Auroantimonate | AuSbO3 |
| 4.CB.05 | UM1998-11-O-AuHSb | Au+2Sb3+O2(OH) |
| 4.CB.05 | Tistarite | Ti3+2O3 |
| 4.CB.05 | Unnamed (Fe-Cr Oxide) | FeCrO3 |
| 4.CB.05 | Hemleyite | (Fe2+0.48Mg0.37Ca0.04Na0.04Mn2+0.03Al0.03Cr3+0.01)sum=1.00Si1.00O3 |
| 4.CB.10 | Avicennite | Tl2O3 |
| 4.CB.10 | Bixbyite-(Mn) | Mn3+2O3 |
| 4.CB.10 | Bixbyite-(Fe) | (Fe,Mn)2O3 |
| 4.CB.15 | Armalcolite | (Mg,Fe2+)Ti2O5 |
| 4.CB.15 | Sassite | Ti3+2Ti4+O5 |
| 4.CB.15 | Pseudobrookite | Fe2TiO5 |
| 4.CB.15 | Ferropseudobrookite | Fe2+Ti2O5 |
| 4.CB.15 | Griffinite | Al2TiO5 |
| 4.CB.15 | Pseudobrookite Group | |
| 4.CB.20 | Zincohögbomite-2N2S | [(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(OH)]2 |
| 4.CB.20 | Zincohögbomite-2N6S | [(Zn,Mg)7(Al,Fe3+,Ti)16O31(OH)]2 |
| 4.CB.20 | Magnesiohögbomite-6N6S | [(Mg,Fe2+)3(Al,Ti,Fe3+)8O15(OH)]6 |
| 4.CB.20 | Magnesiohögbomite-2N3S | [(Mg,Fe2+,Zn)4(Al,Ti,Fe3+)10O19(OH)]2 |
| 4.CB.20 | Magnesiohögbomite-2N2S | [(Mg,Fe2+)3[Al7(Ti,Fe3+)]O15(OH)]2 |
| 4.CB.20 | Ferrohögbomite-6N12S | [(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6 |
| 4.CB.20 | Magnesiohögbomite-2N4S | (Mg8.43Fe2+1.57)sum=10Al22Ti4+2O46(OH)2 |
| 4.CB.20 | Magnesiobeltrandoite-2N3S | (Mg6Al2)(Al18Fe3+2)O38(OH)2 |
| 4.CB.20 | Zincovelesite-6N6S | Zn3(Fe3+,Mn3+,Al,Ti)8O15(OH) |
| 4.CB.25 | Pseudorutile | Fe2Ti3O9 |
| 4.CB.25 | Kleberite | FeTi6O11(OH)5 |
| 4.CB.30 | Berdesinskiite | V3+2TiO5 |
| 4.CB.30 | Oxyvanite | V3+2V4+O5 |
| 4.CB.30 | Kaitianite | Ti3+2Ti4+O5 |
| 4.CB.35 | Olkhonskite | (Cr,V)2Ti3O9 |
| 4.CB.35 | Schreyerite | V3+2Ti3O9 |
| 4.CB.35 | Machiite | Al2Ti3O9 |
| 4.CB.35 | Vestaite | (Ti4+Fe2+)Ti4+3O9 |
| 4.CB.40 | Kamiokite | Fe2Mo3O8 |
| 4.CB.40 | Nolanite | V3+8Fe3+2O14(OH)2 |
| 4.CB.40 | Rinmanite | Zn2Sb2Mg2Fe4O14(OH)2 |
| 4.CB.40 | Iseite | Mn2Mo3O8 |
| 4.CB.40 | Majindeite | Mg2Mo3O8 |
| 4.CB.40 | Rinmanite-(Zn) | Zn2Sb2(Fe3+4Zn2)O14(OH)2 |
| 4.CB.45 | Claudetite | As2O3 |
| 4.CB.45 | Stibioclaudetite | AsSbO3 |
| 4.CB.50 | Arsenolite | As2O3 |
| 4.CB.50 | Senarmontite | Sb2O3 |
| 4.CB.55 | Valentinite | Sb2O3 |
| 4.CB.60 | Bismite | Bi2O3 |
| 4.CB.70 | Sillénite | Bi12SiO20 |
| 4.CB.75 | Kyzylkumite | V3+Ti2O5(OH) |
| 4.CB.80 | Tietaiyangite | Fe3+4Fe2+TiO9 |
| 4.CB.85 | Liuite | FeTiO3 |
| 4.CB.90 | Luogufengite | Fe2O3 |
| 4.CB.95 | Wangdaodeite | FeTiO3 |
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.
Internet Links for Sphaerobismoite
mindat.org URL:
https://www.mindat.org/min-7308.html
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References for Sphaerobismoite
Localities for Sphaerobismoite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Austria | |
| Auer (2022) |
| Jakely (Hrsg.) |
Germany (TL) | |
| American Mineralogist |
| Am. Min. (1996) +1 other reference |
Hungary | |
| Erik Vercammen collection |
Mozambique | |
| Gomes et al. (2022) |
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Alsó-Rózsa adit, Nagybörzsöny, Szob District, Pest County, Hungary