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Balićžunićite

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07733860015415524578852.jpg
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.


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Classification of BalićžunićiteHide

Approved
Approval Year:
2013
First Published:
2014
7.A0.

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
A : Sulfates (selenates, etc.) without additional anions, without H2O
0 :

Physical Properties of BalićžunićiteHide

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

Chemical Properties of BalićžunićiteHide

Formula:
Bi2O(SO4)2

Crystallography of BalićžunićiteHide

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)°
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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.749Å(29)
5.562Å(49)
5.433Å(46)
3.489Å(100)
3.409Å(78)
3.366Å(74)
3.146Å(91)
3.057Å(28)
Comments:
From Type Description.

Type Occurrence of BalićžunićiteHide

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 BalićžunićiteHide

Related Minerals - Nickel-Strunz GroupingHide

7.A0.LeguerniteBi38O42(SO4)15Mon. 2 : P2
7.A0.ZincomeniteZnSeO3Orth. mmm (2/m 2/m 2/m) : Pbca

Other InformationHide

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 BalićžunićiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Jones, W.M. (1984) Equilibrium pressures over the systems bismuth trisulfate-dibismuthmonoxydisulfate and dibismuthmonoxydisulfate-dibismuthdioxymonosulfate. Slow transformation between two crystalline forms of dibismuthmonoxydisulfate. Journal of Chemical Physics: 80: 3408-3419.
Aurivillius, B. (1988) Pyrolysis products of Bi2(SO4)3. II. Crystal structure of Bi2O(SO4)2. Acta Chemica Scandinavica: 42: 95-110.
Pinto, D., Garavelli, A. and Mitolo, D. (2013) Balićžunićite, IMA 2012-098. CNMNC Newsletter No. 16, August 2013, page 2699. Mineralogical Magazine: 77: 2695-2709.
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.
Williams, P.A., Hatert, F., Pasero, M., Mills, S.J. (2013) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 16. New minerals and nomenclature modifications approved in 2013. Mineralogical Magazine: 77: 2695-2709.
Pinto, D., Garavelli, A., Balić-Žunić, T. (2015) The crystal structure of balićžunićite, Bi2O(SO4)2, a new natural bismuth oxide sulfate. Mineralogical Magazine: 79: 597-611.
Gagne, O.C., Belakovskiy, D.I., Cámara, F. (2016) New Mineral Names. American Mineralogist: 101: 1240-1243.

Internet Links for BalićžunićiteHide

Localities for BalićžunićiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy (TL)
 
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
Pinto, D., Garavelli, A. and Mitolo, D. (2013) Balićžunićite, IMA 2012-098. CNMNC Newsletter No. 16, August 2013, page 2699; Mineralogical Magazine, 77, 2695-2709.
 
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