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Mozgovaite

A valid IMA mineral species
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Formula:
PbBi4S7
Minor Se may replace S.
Colour:
Silvery grey
Lustre:
Metallic
Hardness:
2½ - 3½
Specific Gravity:
6.26 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Nadezhda Nikolaevna Mozgova (Надежда Николаевна Мозгова) (10 April 1931 – 11 April 2019), Russian mineralogist, professor, doctor of geological and mineralogical Sciences, and honorary member of the all-Russian mineralogical society. She was the lead researcher at the Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry, Russian Academy of Sciences.
This page provides mineralogical data about Mozgovaite.


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Unique IdentifiersHide

Mindat ID:
7066
Long-form identifier:
mindat:1:1:7066:5

IMA Classification of MozgovaiteHide

Classification of MozgovaiteHide

Strunz-mindat (2025):
2.JA.05h

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
A : Galena derivatives with little or no 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
MzgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of MozgovaiteHide

Lustre:
Metallic
Transparency:
Opaque
Colour:
Silvery grey
Streak:
Grey
Hardness:
2½ - 3½ on Mohs scale
Hardness:
VHN10=116 kg/mm2 - Vickers
Density:
6.26(6) g/cm3 (Calculated)

Optical Data of MozgovaiteHide

Type:
Biaxial
Anisotropism:
Rather strong, but without color effects
Bireflectance:
Weak
Reflectivity:
WavelengthR1 (%)R2 (%)
420nm36.4%40.3%
440nm36.0%40.1%
460nm35.8%40.2%
480nm35.7%40.3%
500nm35.7%40.3%
520nm35.4%40.6%
540nm35.3%40.6%
560nm35.1%40.6%
580nm35.0%40.6%
600nm35.0%40.3%
620nm34.9%40.1%
640nm34.8%40.1%
660nm34.9%40.1%
680nm34.8%39.8%
700nm34.7%39.6%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 40.6%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White
Internal Reflections:
None
Pleochroism:
Non-pleochroic

Chemistry of MozgovaiteHide

Mindat Formula:
PbBi4S7

Minor Se may replace S.
Element Weights:
Element% weight
Bi65.946 %
S17.707 %
Pb16.346 %

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

Crystallography of MozgovaiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 13.18(6) Å, b = 37.4(2) Å, c = 4.05(3) Å
Ratio:
a:b:c = 0.352 : 1 : 0.108
Unit Cell V:
1,996.37 ų (Calculated from Unit Cell)
Z:
6
Morphology:
Acicular crystals, to 600 µm, in sprays
Comment:
Space Group: Bbmm (by analogy to synthetic PbBi4S7).

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.80 Å(10)
2.95 Å(4B)
2.34 Å(4B)
3.58 Å(3)
3.30 Å(3)
3.40 Å(2)
3.11 Å(2)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3a: Earth’s earliest Hadean crust>4.50
11 : Volcanic fumarole minerals; reduced phases (see also #45)
Stage 3b: Earth’s earliest hydrosphere>4.45
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)
High-? alteration and/or metamorphism
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12])

Type Occurrence of MozgovaiteHide

Type Locality:
ⓘ La Fossa crater, Vulcano Island, Lipari, Eolie Islands (Aeolian Islands), Metropolitan City of Messina, Sicily, Italy
General Appearance of Type Material:
Tiny slender prismatic crystals, up to 0.2 mm long and 0.02 mm across.
Place of Conservation of Type Material:
University of Bari, Bari, Italy, 5/nm.
Geological Setting of Type Material:
Fumarole encrustation.
Associated Minerals at Type Locality:
BismuthiniteCannizzariteGalenobismutiteLillianite
Reference:
Verro, Filippo; Garavelli, Anna; Garbarino, Carlo; Moëlo, Yves; Borodaev, Yuri S. (1999) Rare sulfosalts from Vulcano, Aeolian Islands, Italy. II. Mozgovaite, PbBi4(S,Se)7, a new mineral species. The Canadian Mineralogist, 37 (6). 1499-1506

Synonyms of MozgovaiteHide

Other Language Names for MozgovaiteHide

German:Mozgovait
Spanish:Mozgovaita

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Mozgovaite associated with CannizzaritePb48Bi56S132

Related Minerals - Strunz-mindat GroupingHide

2.JA.FerdowsiiteAg8(Sb5As3)S16Mon. 2/m : P21/b
2.JA.LuboržákiteMn2AsSbS5Mon. 2/m : B2/m
2.JA.SangenaroiteAg8(Sb8-xAsx)SΣ16 Mon. 2/m
2.JA.05aPavoniteAgBi3S5Mon. 2/m : B2/m
2.JA.05bGrumipluciteHgBi2S4Mon. 2/m : B2/m
2.JA.05cKudriavite(Cd,Pb)Bi2S4Mon. 2/m : B2/m
2.JA.05dCupromakovickyiteCu4AgPb2Bi9S18Mon. 2/m : B2/m
2.JA.05eBenjaminiteAg3Bi7S12Mon. 2/m : B2/m
2.JA.05iLivingstoniteHgSb4S6(S2)Mon. 2/m : B2/b
2.JA.05DantopaiteAg5Bi13S22Mon. 2/m : B2/m
2.JA.05aCupropavoniteCu0.9Ag0.5Pb0.6Bi2.5S5 Mon. 2/m : B2/m
2.JA.05SelenodantopaiteAg5Bi13Se22Mon. 2/m : B2/m
2.JA.05gBorodaeviteAg5(Bi,Pb,Fe)8(Sb,Bi)2S17Mon.
2.JA.05aCupromakopavoniteAg3Cu8Pb4Bi19S38Mon. 2/m : B2/m
2.JA.05dMakovickyiteCu1.12Ag0.81Pb0.27Bi5.35S9Mon. 2/m
2.JA.05fMummeiteCu0.58Ag3.11Pb1.10Bi6.65S13Mon.
2.JA.10bKupčíkiteCu3.4Fe0.6Bi5S10Mon. 2/m : B2/m
2.JA.10dPizgrischite(Cu,Fe)Cu14PbBi17S35Mon. 2/m : B2/m
2.JA.10cHodrušiteCu8Bi12S22Mon. 2/m
2.JA.10aCuprobismutiteCu8AgBi13S24Mon. 2/m : B2/m
2.JA.10ePadĕraiteCu7[(Cu,Ag)0.33Pb1.33Bi11.33]S22Mon. 2/m : P21/m
2.JA.15SchapbachiteAg0.4Pb0.2Bi0.4SIso. m3m (4/m 3 2/m) : Fm3m
2.JA.15CuboargyriteAgSbS2Iso. m3m (4/m 3 2/m)
2.JA.20MatilditeAgBiS2Trig. 3 2 : P31 2 1
2.JA.20VolynskiteAgBiTe2Trig. 3m (3 2/m) : P3m1
2.JA.20BohdanowicziteAgBiSe2Trig. 3m (3 2/m) : P3m1

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 MozgovaiteHide

References for MozgovaiteHide

Localities for MozgovaiteHide

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 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.
Italy (TL)
 
  • Sicily
    • Metropolitan City of Messina
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
Verro et al. (1999)
Russia
 
  • Khabarovsk Krai
    • Verkhnebureinsky District
Alekseev et al. (2015)
  • Republic of Karelia
    • Pryazhinsky District
Ivashchenko et al. (2018, June)
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