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Chovanite
A valid IMA mineral species
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About Chovanite
Formula:
Pb15-2xSb14+2xS36Ox (x ~ 0.2)
May contain minor Tl; the Monte Arsiccio material has a formula close to TlPb26(Sb,As)31S72O, while the Pollone's one is close to Pb28(Sb,As)30S72O
Colour:
Grey, black
Lustre:
Metallic
Hardness:
3
Specific Gravity:
6.029 (Calculated)
Crystal System:
Monoclinic
Name:
Named after Prof. Martin Chovan (b. 1946) outstanding Slovak mineralogist, Department of Mineralogy and Petrology, Comenius University, Bratislava, Slovakia. He has performed extensive studies of antimony mineralization in the Western Carpathians. Pronunciation of the name is ‘‘khovanite’.
The single oxygen atom in the structure is bound to two (Sb,As) atoms, which alternate with vacant positions along b; this feature is also observed in other Pb oxy-sulphosalts like scainiite. The material from the Pollone mine has the 8 Å structure, modular, which is topologically derived from pellouxite.
Unique Identifiers
Mindat ID:
39970
Long-form identifier:
mindat:1:1:39970:6
IMA Classification of Chovanite
Approved
IMA Formula:
Pb2+15-2xSb3+14+2xS2-36Ox; (x~0.2)
Approval year:
2009
First published:
2012
Type description reference:
Topa, Dan, Sejkora, Jiří, Makovicky, Emil, Pršek, Jaroslav, Ozdín, Daniel, Putz, Hubert, Dittrich, Herbert, Karup-Møller, Sven (2012) Chovanite, Pb15-2xSb14+2xS36Ox (x ∼ 0.2), a new sulphosalt species from the Low Tatra Mountains, Western Carpathians, Slovakia. European Journal of Mineralogy, 24 (4) 727-740 doi:10.1127/0935-1221/2012/0024-2189
Classification of Chovanite
2.JB.35e
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
B : Galena derivatives, with Pb
3.10.4.
3 : SULFOSALTS
10 :
3 : SULFOSALTS
10 :
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 for Standard |
|---|---|---|
| Cov | 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 Chovanite
Metallic
Transparency:
Opaque
Colour:
Grey, black
Hardness:
3 on Mohs scale
Hardness:
VHN25=213 - 238 kg/mm2 - Vickers
Comment:
Mohs hardness derived from VHN.
Tenacity:
Brittle
Cleavage:
Distinct/Good
parallel to the c axis
parallel to the c axis
Density:
6.029 g/cm3 (Calculated)
Comment:
(The published 7.14 seems to be an error?)
Optical Data of Chovanite
Anisotropism:
Moderate to strong both in air and oil.
Bireflectance:
Distinct in air, and further enhanced in oil.
Reflectivity:
| Wavelength | R1 (%) | R2 (%) |
|---|---|---|
| 400nm | 42.7% | 44.0% |
| 420nm | 39.5% | 45.0% |
| 440nm | 39.3% | 44.5% |
| 460nm | 38.2% | 44.1% |
| 480nm | 37.8% | 43.5% |
| 500nm | 37.8% | 43.5% |
| 520nm | 37.4% | 43.4% |
| 540nm | 36.7% | 43.2% |
| 560nm | 36.6% | 42.6% |
| 580nm | 35.7% | 41.5% |
| 600nm | 35.1% | 40.9% |
| 620nm | 34.8% | 40.2% |
| 640nm | 34.3% | 39.4% |
| 660nm | 33.6% | 38.7% |
| 680nm | 33.0% | 37.5% |
| 700nm | 32.6% | 37.1% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 45.0%.
R1 shown in black, R2 shown in red
Colour in reflected light:
White
Internal Reflections:
Absent
Pleochroism:
Visible
Comments:
From white with a yellowish green tint (darkest position) to white with a faint bluish tint (lightest position).
Comments:
The optical properties are very similar to boulangerite.
Chemistry of Chovanite
Mindat Formula:
Pb15-2xSb14+2xS36Ox (x ~ 0.2)
May contain minor Tl; the Monte Arsiccio material has a formula close to TlPb26(Sb,As)31S72O, while the Pollone's one is close to Pb28(Sb,As)30S72O
May contain minor Tl; the Monte Arsiccio material has a formula close to TlPb26(Sb,As)31S72O, while the Pollone's one is close to Pb28(Sb,As)30S72O
Elements listed:
Crystallography of Chovanite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 48.189(48) Å, b = 4.1104(40) Å, c = 34.235(35) Å
β = 106.059(15)°
β = 106.059(15)°
Ratio:
a:b:c = 11.724 : 1 : 8.329
Unit Cell V:
6517 ų
Z:
4
Morphology:
Acicular crystals from Monte Arsiccio are up to 5 mm in length; thick acicular crystals from the Pollone mine are up to 1 cm in length.
Comment:
Pollone mine material parameters: a = 48.38(5), b = 4.11(4), c = 34.18(4) Å, β = 106.26°; the 8 Å structural type has the space group P21/a and the unit-cell parameters a = 34.052(3), b = 8.2027(7), c = 48.078(4) Å, β = 106.258(4)°.
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0006272 | Chovanite | Makovicky E, Topa D (2009) The crystal structure of sulfosalts with the boxwork architecture and their new representative, Pb15-2xSb14+2xS36Ox The Canadian Mineralogist 47 3-24 | ![]() | 2009 | Klacianka Sb deposit, Low Tatra Mountains, Slovakia | 0 | 293 |
| 0006272 | Chovanite | Makovicky E, Topa D (2009) The crystal structure of sulfosalts with the boxwork architecture and their new representative, Pb15-2xSb14+2xS36Ox The Canadian Mineralogist 47 3-24 | ![]() | 2009 | Klacianka Sb deposit, Low Tatra Mountains, Slovakia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.012 Å | (39) |
| 3.966 Å | (39) |
| 3.793 Å | (23) |
| 3.433 Å | (100) |
| 3.416 Å | (22) |
| 3.387 Å | (31) |
| 3.376 Å | (27) |
| 3.269 Å | (29) |
| 2.996 Å | (26) |
| 2.956 Å | (21) |
| 2.930 Å | (23) |
Comments:
Sample from Dúbrava, Slovakia.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-? alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Geological Setting:
Monte Arsiccio mine (vugs in metadolostones)
Type Occurrence of Chovanite
General Appearance of Type Material:
Irregular aggregates up to 1 cm in size. Irregular or short prismatic grains up to 0.1 mm in length, intergrown with lamellae, needles and irregular patches of other Pb-Sb sulphosalts
Place of Conservation of Type Material:
Department of Mineralogy and Petrography of the NHM Vienna (cat. no. O 2406) (formerly in the collection of the Department of Materials Engineering and Physics, Univ. of Salzburg, former cat. no. 14995); Department of Mineralogy and Petrology, National Museum, Prague, Czech Republic (catalogue No. P1P 13/2009); Department of Mineralogy and Petrology, Faculty of Natural Sciences, Comenius University, Bratislava, under (catalogue no. 7282).
Geological Setting of Type Material:
In hydrothermal antimony ore deposit.
Associated Minerals at Type Locality:
Reference:
Topa, Dan, Sejkora, Jiří, Makovicky, Emil, Pršek, Jaroslav, Ozdín, Daniel, Putz, Hubert, Dittrich, Herbert, Karup-Møller, Sven (2012) Chovanite, Pb15-2xSb14+2xS36Ox (x ∼ 0.2), a new sulphosalt species from the Low Tatra Mountains, Western Carpathians, Slovakia. European Journal of Mineralogy, 24 (4) 727-740 doi:10.1127/0935-1221/2012/0024-2189
Synonyms of Chovanite
Other Language Names for Chovanite
Common Associates
Associations Based on Photo Data:
| 1 photo of Chovanite associated with Robinsonite | Pb4Sb6S13 |
| 1 photo of Chovanite associated with Quartz | SiO2 |
Related Minerals - Strunz-mindat Grouping
| 2.JB. | Clino-oscarkempffite | Ag15Pb6Sb21Bi18S72 |
| 2.JB. | Arsenquatrandorite | Ag17.6Pb12.8Sb38.1As11.5S96 |
| 2.JB. | Ginelfite | Ag2(Ag0.5Fe)TlPb23.5(Sb,As)33.5S76 |
| 2.JB. | Andreadiniite | CuHgAg7Pb7Sb24S48 |
| 2.JB. | Chukotkaite | AgPb7Sb5S15 |
| 2.JB. | Selenojunoite | Cu2Pb3Bi8Se16 |
| 2.JB. | Lechnerite | Ag10Cu4HgPb33Sb58S128 |
| 2.JB. | Cuprosenandorite | Ag16Cu8Pb24Sb72S144 |
| 2.JB. | Morleyite | Ag2CuPb25Sb24As4S68.5 |
| 2.JB. | Lazerckerite | Ag3.75Pb4.50(Sb7.75Bi4)S24 |
| 2.JB. | Lasmanisite | Ag12Pb13Mn11Sb44S96 |
| 2.JB. | Montpelvouxite | AgPb16Sb27As18S84 |
| 2.JB. | Senandorite | AgPbSb3S6 |
| 2.JB. | Oscarkempffite | Ag10Pb4(Sb17Bi9)S48 |
| 2.JB.05 | Diaphorite | Ag3Pb2Sb3S8 |
| 2.JB.10 | Cosalite | Pb2Bi2S5 |
| 2.JB.15 | Marrite | AgPbAsS3 |
| 2.JB.15 | Freieslebenite | AgPbSbS3 |
| 2.JB.20 | Cannizzarite | Pb48Bi56S132 |
| 2.JB.20 | Wittite | Pb9Bi12(S,Se)27 |
| 2.JB.25j | Rouxelite | Cu2HgPb23Sb27S65.5 |
| 2.JB.25i | Neyite | Ag2Cu6Pb25Bi26S68 |
| 2.JB.25a | Junoite | Cu2Pb3Bi8(S,Se)16 |
| 2.JB.25f | Ángelaite | Cu2AgPbBiS4 |
| 2.JB.25e | Galenobismutite | PbBi2S4 |
| 2.JB.25c | Nordströmite | CuPb3Bi7(Se4S10) |
| 2.JB.25i | Cuproneyite | Cu7Pb27Bi25S68 |
| 2.JB.25g | Nuffieldite | Cu1.4Pb2.4Bi2.4Sb0.2S7 |
| 2.JB.25h | Weibullite | Pb5Bi8Se7S11 |
| 2.JB.25d | Proudite | CuPb7.5Bi9.33(S,Se)22 |
| 2.JB.25b | Felbertalite | Cu2Pb6Bi8S19 |
| 2.JB.30a | Jordanite | Pb14As6S23 |
| 2.JB.30a | Geocronite | Pb14Sb6S23 |
| 2.JB.30a | Arsenmarcobaldiite | Pb12(As3.2Sb2.8)Σ6S21 |
| 2.JB.30b | Kirkiite | Pb10Bi3As3S19 |
| 2.JB.30c | Tsugaruite | Pb28As15S50Cl |
| 2.JB.30a | Marcobaldiite | Pb12(Sb3As2Bi)Σ6S21 |
| 2.JB.35d | Pellouxite | (Cu,Ag)Pb10Sb12S27O(Cl,S)0.6 |
| 2.JB.35a | Zinkenite | Pb9Sb22S42 |
| 2.JB.35c | Pillaite | Pb9Sb10S23ClO0.5 |
| 2.JB.35b | Scainiite | Pb14Sb30S54O5 |
| 2.JB.35f | Tubulite | Ag2Pb22Sb20S53 |
| 2.JB.40a | Fizélyite | Ag5Pb14Sb21S48 |
| 2.JB.40a | Ramdohrite | Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24 |
| 2.JB.40e | Ustarasite | Pb(Bi,Sb)6S10 (?) |
| 2.JB.40a | 'Bursaite' | Pb5Bi4S11 (?) |
| 2.JB.40 | 'UM1988-05-S:AgBiCuHgPb' | (Hg,Ag,Cu,Pb)5Pb5Bi11S27 |
| 2.JB.40 | 'UM1988-06-S:AgBiCuHgPb' | (Pb,Hg)12(Cu,Ag)3(Bi,Sb)10(S,Te)27 |
| 2.JB.40a | Terrywallaceite | AgPb(Sb,Bi)3S6 |
| 2.JB.40a | Jasrouxite | Ag16Pb4(Sb25As15)S72 |
| 2.JB.40a | Tarutinoite | Ag3Pb7Bi7S19 |
| 2.JB.40a | Oyonite | Ag3Mn2Pb4Sb7As4S24 |
| 2.JB.40b | Heyrovskýite | Pb6Bi2S9 |
| 2.JB.40a | Quatrandorite | AgPbSb3S6 |
| 2.JB.40a | Erzwiesite | Ag8Pb12Bi16S40 |
| 2.JB.40a | Vikingite | Ag5Pb8Bi13S30 |
| 2.JB.40a | Lillianite | Pb3-2xAgxBi2+xS6 |
| 2.JB.40b | Baiamareite | Ag4Pb12Fe4Sb20S48 |
| 2.JB.40a | Staročeskéite | Ag0.70Pb1.60(Bi1.35Sb1.35)Σ2.70S6 |
| 2.JB.40a | Roshchinite | Ag19Pb10Sb51S96 |
| 2.JB.40b | Aschamalmite | Pb6-3xBi2+xS9 |
| 2.JB.40b | Eskimoite | Ag7Pb10Bi15S36 |
| 2.JB.40a | Menchettiite | AgPb2.40Mn1.60Sb3As2S12 |
| 2.JB.40a | Holubite | Ag3Pb6(Sb8Bi3)S24 |
| 2.JB.40a | Brusnitsynite | Mn3CuPbAs3Sb2S12 |
| 2.JB.40a | Treasurite | Ag7Pb6Bi15S32 |
| 2.JB.40c | Ourayite | Ag3Pb4Bi5S13 |
| 2.JB.40a | Uchucchacuaite | AgMnPb3Sb5S12 |
| 2.JB.40d | 'Schirmerite' | PbAgBi3S6 - Pb3Ag1.5Bi3.5S9 |
| 2.JB.40a | Xilingolite | Pb3Bi2S6 |
| 2.JB.40a | Gustavite | AgPbBi3S6 |
| 2.JB.55 | Gratonite | Pb9As4S15 |
| 2.JB.60 | Marrucciite | Hg3Pb16Sb18S46 |
| 2.JB.65 | Vurroite | Pb20Sn2(Bi,As)22S54Cl6 |
| 2.JB.65 | Tazieffite | Pb20Cd2(As,Bi)22S50Cl10 |
| 2.JB.70 | Daliranite | PbHgAs2S5 |
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 Chovanite
mindat.org URL:
https://www.mindat.org/min-39970.html
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References for Chovanite
Reference List:
Makovicky, E.; Topa, D. (2009) The crystal structure of sulfosalts with the boxwork architecture and their new representative, Pb15-2xSb14+2xS36Ox. The Canadian Mineralogist, 47 (1). 3-24 doi:10.3749/canmin.47.1.3
Topa, Dan, Sejkora, Jiří, Makovicky, Emil, Pršek, Jaroslav, Ozdín, Daniel, Putz, Hubert, Dittrich, Herbert, Karup-Møller, Sven (2012) Chovanite, Pb15-2xSb14+2xS36Ox (x ∼ 0.2), a new sulphosalt species from the Low Tatra Mountains, Western Carpathians, Slovakia. European Journal of Mineralogy, 24 (4) 727-740 doi:10.1127/0935-1221/2012/0024-2189
Localities for Chovanite
Showing 10 localities.
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 | |
| Biagioni et al. (2014) |
| Biagioni et al. (2014) |
| Färber (n.d.) | |
Kosovo | |
| Mederski et al. (2021) +1 other reference |
| Mederski et al. (2019) |
Slovakia (TL) | |
| Topa et al. (2012) |
| Števko M. (2021) |
| Topa et al. (2012) +1 other reference |
| Topa et al. (2012) |
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The
Sant'Olga tunnel, Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy