Sphaerobismoite
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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.
Classification of Sphaerobismoite
Approved
Approval Year:
1993
4/C.02-35
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
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
Chemical Properties of Sphaerobismoite
Crystallography of Sphaerobismoite
Crystal System:
Tetragonal
Cell Parameters:
a = 8.02 Å, c = 6.46 Å
Ratio:
a:c = 1 : 0.805
Unit Cell V:
415.51 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.16 | (100) |
5.73 | (70) |
1.902 | (60) |
3.44 | (50) |
2.02 | (50) |
Type Occurrence of Sphaerobismoite
Co-Type Localities:
General Appearance of Type Material:
tabular, crystals to 20 µm, tetragonal outline possible, forming spherulitic aggregates
Geological Setting of Type Material:
oxidation product of wittichenite and emplectite
Associated Minerals at Type Locality:
Synonyms of Sphaerobismoite
Other Language Names for Sphaerobismoite
Related Minerals - Nickel-Strunz Grouping
4.CB.05 | Brizziite | NaSb5+O3 | Trig. 3 : R3 |
4.CB.05 | Corundum | Al2O3 | Trig. 3m (3 2/m) : R3c |
4.CB.05 | Ecandrewsite | (Zn,Fe2+,Mn2+)TiO3 | Trig. 3 : R3 |
4.CB.05 | Eskolaite | Cr2O3 | Trig. |
4.CB.05 | Geikielite | MgTiO3 | Trig. 3 : R3 |
4.CB.05 | Hematite | Fe2O3 | Trig. 3m (3 2/m) : R3c |
4.CB.05 | Ilmenite | Fe2+TiO3 | Trig. 3 : R3 |
4.CB.05 | Karelianite | V3+2O3 | Trig. |
4.CB.05 | Melanostibite | Mn2+(Sb5+,Fe3+)O3 | Trig. |
4.CB.05 | Pyrophanite | Mn2+TiO3 | Trig. 3 : R3 |
4.CB.05 | Akimotoite | (Mg,Fe2+)SiO3 | Trig. |
4.CB.05 | Unnamed (Auroantimonate) | AuSbO3 | |
4.CB.05 | UM1998-11-O-AuHSb | Au+2Sb3+O2(OH) | |
4.CB.05 | Tistarite | Ti3+2O3 | Trig. 3m (3 2/m) : R3c |
4.CB.10 | Avicennite | Tl2O3 | Iso. m3 (2/m 3) : Ia3 |
4.CB.10 | Bixbyite | Mn3+2O3 | Iso. m3 (2/m 3) : Ia3 |
4.CB.15 | Armalcolite | (Mg,Fe2+)Ti2O5 | Orth. mmm (2/m 2/m 2/m) |
4.CB.15 | Pseudobrookite | Fe2TiO5 | Orth. mmm (2/m 2/m 2/m) |
4.CB.20 | Zincohögbomite-2N2S | [(Zn,Al,Fe2+)3(Al,Fe3+,Ti)8O15(OH)]2 | Hex. 6mm : P63mc |
4.CB.20 | Zincohögbomite-2N6S | [(Zn,Mg)7(Al,Fe3+,Ti)16O31(OH)]2 | Hex. 6mm : P63mc |
4.CB.20 | Magnesiohögbomite-6N6S | [(Mg,Fe2+)3(Al,Ti,Fe3+)8O15(OH)]6 | Trig. 3m (3 2/m) : R3m |
4.CB.20 | Magnesiohögbomite-2N3S | [(Mg,Fe2+,Zn)4(Al,Ti,Fe3+)10O19(OH)]2 | Trig. 3m (3 2/m) : P3 1m |
4.CB.20 | Magnesiohögbomite-2N2S | [(Mg,Fe2+)3[Al7(Ti,Fe3+)]O15(OH)]2 | Hex. 6mm : P63mc |
4.CB.20 | Ferrohögbomite-6N12S | [(Fe2+,Mg,Zn)5(Al,Ti,Fe3+)12O23(OH)]6 | Trig. 3m (3 2/m) : R3m |
4.CB.25 | Pseudorutile | Fe2Ti3O9 | Hex. |
4.CB.25 | Kleberite | FeTi6O11(OH)5 | Mon. 2/m : P21/b |
4.CB.30 | Berdesinskiite | V3+2TiO5 | Mon. |
4.CB.30 | Oxyvanite | V3+2V4+O5 | Mon. 2/m : B2/b |
4.CB.35 | Olkhonskite | (Cr,V)2Ti3O9 | Mon. |
4.CB.35 | Schreyerite | V3+2Ti3O9 | Mon. |
4.CB.40 | Kamiokite | Fe2Mo3O8 | Hex. |
4.CB.40 | Nolanite | (V3+,Fe3+,Fe2+,Ti)10O14(OH)2 | Hex. |
4.CB.40 | Rinmanite | Zn2Sb2Mg2Fe4O14(OH)2 | Hex. 6 : P63 |
4.CB.40 | Iseite | Mn2Mo3O8 | Hex. 6mm : P63mc |
4.CB.40 | Majindeite | Mg2Mo3O8 | Hex. 6mm : P63mc |
4.CB.45 | Claudetite | As2O3 | Mon. 2/m |
4.CB.45 | Stibioclaudetite | AsSbO3 | Mon. 2/m : P21/m |
4.CB.50 | Arsenolite | As2O3 | Iso. m3m (4/m 3 2/m) : Fd3m |
4.CB.50 | Senarmontite | Sb2O3 | Iso. m3m (4/m 3 2/m) : Fd3m |
4.CB.55 | Valentinite | Sb2O3 | Orth. mmm (2/m 2/m 2/m) : Pccn |
4.CB.60 | Bismite | Bi2O3 | Mon. 2/m : P21/b |
4.CB.70 | Sillénite | Bi12SiO20 | Iso. 2 3 : I2 3 |
4.CB.75 | Kyzylkumite | V3+Ti2O5(OH) | Mon. 2/m : P21/b |
4.CB.80 | Tietaiyangite | Fe3+4Fe2+TiO9 | Hex. |
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:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Walenta, K. (1979): The secondary minerals of the ore veins of Neubulach, northern Black Forest. Aufschluss: 30: 213-252 (in German); in: Fleischer, M., Mandarino, J.A., Pabst, A. (1980): New mineral names. American Mineralogist: 65: 209
Walenta, K. (1995): Sphaerobismoite, a new mineral of composition Bi2O3 from the Schwarzwald. Aufschluss: 46: 245-248. (in German).
Mineralogical Record: 28: 223-224.
Anthony, J.W., Bideaux, R.A., Bladh, K.W. and Nichols, M.C., Eds. Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA. http://www.handbookofmineralogy.org/ (2016)
Internet Links for Sphaerobismoite
mindat.org URL:
https://www.mindat.org/min-7308.html
Please feel free to link to this page.
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External Links:
Mineral Dealers:
Localities for Sphaerobismoite
Locality List




All localities listed without proper references should be considered as questionable.
Germany (TL) | |
| Min Rec, 28, (3) & Am. Min. (1996) 81, 514 |
| American Mineralogist, Volume 81, pages 1513-1518. 1996 |