Balićžunićite
A valid IMA mineral species
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Tonci Balić-Žunić
Formula:
Bi2O(SO4)2
Colour:
colourless, white, pale brown
Lustre:
Vitreous
Specific Gravity:
5.911 (Calculated)
Crystal System:
Triclinic
Name:
Honours Tonci Balić-Žunić (born 1952), Professor of Mineralogy at the Natural History Museum of the University of Copenhagen. He made important contributions in crystal-structure determination from single-crystal and powder techniques and the theoretical crystal-chemistry of minerals. He discovered/codiscovered several volcanic sublimates including kudriavite, mutnovskyite, eldfellite, heklaite, jakobssonite, leonardsenite and oskarssonite.
Known as a synthetic phase (balićžunićite corresponds to the low-temperature stable form of Bi2O(SO4)2, known as alpha form). Chemically the most simple Bi sulfate mineral known; similar to leguernite and Unnamed (Bi Oxysulphate). The only other known purely Bi sulfates, hydrous/hydrated, are cannonite, riomarinaite and tavagnascoite.
Crystal structure details: (1) nearly planar [Bi5O3]9+ clusters with nearly regular trapezoidal shape; (2) O atoms within the clusters located at the trigonal holes of the Bi5 trapezoids; (3) trapezoidal group connected along [100] via sulfate groups -> infinite [Bi5O3(SO4)5]– columns.
Crystal structure details: (1) nearly planar [Bi5O3]9+ clusters with nearly regular trapezoidal shape; (2) O atoms within the clusters located at the trigonal holes of the Bi5 trapezoids; (3) trapezoidal group connected along [100] via sulfate groups -> infinite [Bi5O3(SO4)5]– columns.
Unique Identifiers
Mindat ID:
43864
Long-form identifier:
mindat:1:1:43864:3
GUID
(UUID V4):
(UUID V4):
a06938f2-7e26-408a-a9ff-8853a2179754
IMA Classification of Balićžunićite
Approved
Approval year:
2013
First published:
2014
Classification of Balićžunićite
7.A0.
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
0 :
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
0 :
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 |
|---|---|---|
| Bžć | 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 Balićžunićite
Vitreous
Transparency:
Transparent
Colour:
colourless, white, pale brown
Streak:
White
Comment:
not measured
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
not observed
Fracture:
None observed
Density:
5.911 g/cm3 (Calculated)
Comment:
not measured
Chemistry of Balićžunićite
Mindat Formula:
Bi2O(SO4)2
Elements listed:
Crystallography of Balićžunićite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.7386(3) Å, b = 11.1844(5) Å, c = 14.1754(7) Å
α = 80.082(2)°, β = 88.462(2)°, γ = 89.517(2)°
α = 80.082(2)°, β = 88.462(2)°, γ = 89.517(2)°
Ratio:
a:b:c = 0.602 : 1 : 1.267
Unit Cell V:
1052.01 ų
Z:
6
Morphology:
Prismatic and elongated crystals (∼50 μm across and up to 200 μm long).
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.749 Å | (29) |
| 5.562 Å | (49) |
| 5.433 Å | (46) |
| 3.489 Å | (100) |
| 3.409 Å | (78) |
| 3.366 Å | (74) |
| 3.146 Å | (91) |
| 3.057 Å | (28) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45a : [Sulfates, arsenates, selenates, antimonates] |
Type Occurrence of Balićžunićite
General Appearance of Type Material:
elongated (along [100]) prisms, ca. ~50 x max. 200 μm
Place of Conservation of Type Material:
Type material is deposited in the collections of the C.L. Garavelli Museum, Dipartimento di Scienze della Terra e Geoambientali, Università degli studi di bari Aldo Moro, Italy, sample number 17/nm
Geological Setting of Type Material:
high-temperature (600oC) fumarole (sublimate)
Associated Minerals at Type Locality:
Reference:
Pinto, D., Garavelli, A., Mitolo, D. (2014) Balićžunićite, Bi2O(SO4)2, a new fumarole mineral from La Fossa crater, Vulcano, Aeolian Islands, Italy. Mineralogical Magazine: 78: 1043-1055.
Synonyms of Balićžunićite
Related Minerals - Strunz-mindat Grouping
| 7.A0. | Leguernite | Bi38O42(SO4)15 |
| 7.A0. | Zincomenite | ZnSeO3 |
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 Balićžunićite
mindat.org URL:
https://www.mindat.org/min-43864.html
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References for Balićžunićite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 16. Mineralogical Magazine, 77 (6) 2695-2709 doi:10.1180/minmag.2013.077.6.01
Pinto, D., Garavelli, A., Mitolo, D. (2014) Balićžunićite, Bi2O(SO4)2, a new fumarole mineral from La Fossa crater, Vulcano, Aeolian Islands, Italy. Mineralogical Magazine, 78 (4) 1043-1055 doi:10.1180/minmag.2014.078.4.15
Localities for Balićžunićite
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.
Italy (TL) | |
| Williams et al. (2013) +1 other reference |
