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Graţianite

A valid IMA mineral species
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03711320017868293228707.jpg
Graţianite

Hagidaira mine, Seta, Midori City, Gunma Prefecture, Japan
03711320017868293228707.jpg
Graţianite

Hagidaira mine, Seta, Midori City, Gunma Prefecture, Japan
07739420017514109539605.jpg
Graţianite

Hagidaira mine, Seta, Midori City, Gunma Prefecture, Japan
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About GraţianiteHide

Formula:
MnBi2S4
Colour:
Bulk color could not be determined
Specific Gravity:
6.031 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honor of Graţian Cioflica (1927–2002), formerly Professor in Mineralogy and Ore Deposits at the University of Bucharest, Romania.
Monoclinic "analogue" of berthierite, garavellite and clerite.

The true, Mn analogue of sunshuite.


Name EncodingHide

CP1252:
Gratianite
Latin-1:
Gratianite
ASCII-7:
Gratianite

Unique IdentifiersHide

Mindat ID:
45962
Long-form identifier:
mindat:1:1:45962:8

IMA Classification of GraţianiteHide

Classification of GraţianiteHide

Strunz-mindat (2026):
2.HA.20

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
A : With Cu, Ag, Fe (without Pb)

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
GţiIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of GraţianiteHide

Comment:
Could not be determined
Colour:
Bulk color could not be determined
Hardness Data:
Could not be measured
Density:
6.031 g/cm3 (Calculated)

Optical Data of GraţianiteHide

Anisotropism:
Strong
Bireflectance:
Weak to modest bireflectance in air and oil, respectively
Colour in reflected light:
Medium gray
Internal Reflections:
None

Chemistry of GraţianiteHide

Mindat Formula:
MnBi2S4
Element Weights:
Element% weight
Bi69.526 %
S21.336 %
Mn9.139 %

Calculated from ideal end-member formula.
Elements listed:
Bi, Mn, S - search for minerals with similar chemistry

Crystallography of GraţianiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 12.677(3) Å, b = 3.9140(8) Å, c = 14.758(3) Å
β = 115.31(3)°
Ratio:
a:b:c = 3.239 : 1 : 3.771
Unit Cell V:
662 ų
Z:
4

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of GraţianiteHide

Type Locality:
ⓘ Antoniu ore pipe, Băiţa mining district, Nucet, Bihor County, Romania
General Appearance of Type Material:
Thin lamellae, intimately intergrown with cosalite and bismuthinite, or as flower-shaped blebs within chalcopyrite.
Place of Conservation of Type Material:
Type material is deposited in the collections of the South Australian Museum, Adelaide, Australia, catalogue number G33937.
Geological Setting of Type Material:
Skarn
Associated Minerals at Type Locality:
BismuthiniteChalcopyriteCosaliteTetradymite
Reference:
Ciobanu, C. L.; Brugger, J.; Cook, N. J.; Mills, S. J.; Elliott, P.; Damian, G.; Damian, F. (2014) Graţianite, MnBi2S4, a new mineral from the Baia Bihor skarn, Romania. American Mineralogist, 99 (5). 1163-1170 doi:10.2138/am.2014.4836

Synonyms of GraţianiteHide

Other Language Names for GraţianiteHide

Relationship of Graţianite to other SpeciesHide

Member of:
Pavonite Homologous Series Group
Other Members of Pavonite Homologous Series:
BenjaminiteAg3Bi7S12Mon. 2/m : B2/m
CupromakopavoniteAg3Cu8Pb4Bi19S38Mon. 2/m : B2/m
CupromakovickyiteCu4AgPb2Bi9S18Mon. 2/m : B2/m
CupropavoniteCu0.9Ag0.5Pb0.6Bi2.5S5 Mon. 2/m : B2/m
DantopaiteAg5Bi13S22Mon. 2/m : B2/m
GrumipluciteHgBi2S4Mon. 2/m : B2/m
Kudriavite(Cd,Pb)Bi2S4Mon. 2/m : B2/m
LuboržákiteMn2AsSbS5Mon. 2/m : B2/m
MakovickyiteCu1.12Ag0.81Pb0.27Bi5.35S9Mon. 2/m
MummeiteCu0.58Ag3.11Pb1.10Bi6.65S13Mon.
PavoniteAgBi3S5Mon. 2/m : B2/m
SunshuiteFeBi2S4Mon. 2/m : B2/m

Related Minerals - Strunz-mindat GroupingHide

2.HA.05GrundmanniteCuBiSe2Orth. mmm(2/m2/m2/m) : Pnma
2.HA.05EmplectiteCuBiS2Orth. mmm(2/m2/m2/m) : Pmna
2.HA.05PříbramiteCuSbSe2Orth. mmm(2/m2/m2/m) : Pnma
2.HA.05Hansblockite(Cu,Hg)(Bi,Pb)Se2Mon. 2/m : P21/b
2.HA.05ChalcostibiteCuSbS2Orth. mmm(2/m2/m2/m)
2.HA.10MiargyriteAgSbS2Mon. 2/m : B2/b
2.HA.20SunshuiteFeBi2S4Mon. 2/m : B2/m
2.HA.20GaravelliteFeSbBiS4Orth.
2.HA.20BerthieriteFeSb2S4Orth. mmm(2/m2/m2/m)
2.HA.20CleriteMnSb2S4Orth. mmm(2/m2/m2/m)
2.HA.25AramayoiteAg3Sb2(Bi,Sb)S6Tric. 1 : P1
2.HA.25BaumstarkiteAg3Sb3S6Tric. 1 : P1
2.HA.30ZhonghongiteCu29(As,Sb)12S33Orth. mm2 : Fmm2

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.

Internet Links for GraţianiteHide

References for GraţianiteHide

Localities for GraţianiteHide

Showing 2 localities.

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.
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Locality ListHide

- 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). 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Japan
 
  • Gunma Prefecture
    • Midori City
      • Seta
Matsubara S. et al. (2018)
Romania (TL)
 
  • Bihor County
    • Nucet
      • Băiţa mining district
Williams et al. (2013) +1 other reference
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