Roshchinite
A valid IMA mineral species
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About Roshchinite
Formula:
Ag19Pb10Sb51S96
Colour:
Silver-gray, lead-gray
Lustre:
Metallic
Hardness:
2½ - 3½
Specific Gravity:
5.265
Crystal System:
Orthorhombic
Member of:
Name:
Named in honor of Yuri Vladimirovich Roshchin (Roschin) (Юрий Владимирович Рощин) (1934-1979), geologist and geochemist with the Central Kazakhstan Geological Administration, Karaganda, Kazakhstan.
This page provides mineralogical data about Roshchinite.
Unique Identifiers
Mindat ID:
3457
Long-form identifier:
mindat:1:1:3457:5
GUID
(UUID V4):
(UUID V4):
c57c9c71-b6e1-4ecc-9a42-bc1aaa785c26
IMA Classification of Roshchinite
Approved
IMA Formula:
(Ag,Cu)19Pb10Sb51S96
First published:
1990
Classification of Roshchinite
2.JB.40a
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
3.4.15.7
3 : SULFOSALTS
4 : ø = 3
3 : SULFOSALTS
4 : ø = 3
5.7.24
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
7 : Sulpharsenites etc. of Pb and other metals
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 |
---|---|---|
Rch | 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 Roshchinite
Metallic
Transparency:
Opaque
Colour:
Silver-gray, lead-gray
Streak:
Pale steel-gray
Hardness:
2½ - 3½ on Mohs scale
Hardness:
VHN15=95 kg/mm2 - Vickers
Tenacity:
Very brittle
Density:
5.265(15) g/cm3 (Measured) 5.263 g/cm3 (Calculated)
Optical Data of Roshchinite
Anisotropism:
Nearly isotropic in cross section
Bireflectance:
Weak and only seen on prismatic sections
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
400nm | 36.9% | 40.3% |
440nm | 37.0% | 40.5% |
480nm | 36.6% | 40.3% |
520nm | 36.3% | 40.2% |
560nm | 35.7% | 39.7% |
600nm | 35.0% | 38.9% |
640nm | 34.4% | 38.0% |
680nm | 33.6% | 37.0% |
700nm | 33.0% | 36.3% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 40.5%.
R1 shown in black, R2 shown in red
Colour in reflected light:
silver-white with weak blue tint
Chemistry of Roshchinite
Mindat Formula:
Ag19Pb10Sb51S96
Elements listed:
Common Impurities:
Cu,Zn,Hg,Mn
Crystallography of Roshchinite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 12.946(19) Å, b = 19.048(10) Å, c = 16.932(12) Å
Ratio:
a:b:c = 0.68 : 1 : 0.889
Unit Cell V:
4,175.35 ų (Calculated from Unit Cell)
Z:
1
Morphology:
{100}, {210}, {110}, {230}, {010}, {111}, {221}, {252}, {201}, {031}, {041}, and {001}.
Comment:
Incommensurately modulated structure (Makovicky et al., 2018).
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.24 Å | (60) |
2.85 Å | (80) |
2.70 Å | (60) |
1.866 Å | (50) |
1.765 Å | (100) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Roshchinite
General Appearance of Type Material:
Short, prismatic, partly rounded crystals measuring 0.5 to 4 mm.
Place of Conservation of Type Material:
Fersman Mineralogical Museum, Moscow, Russia.
Mining Museum, St. Petersburg, Russia.
Mining Museum, St. Petersburg, Russia.
Associated Minerals at Type Locality:
Reference:
Spiridov, E.M., Petrova, I.B., Dashevskaya, D.M., Balashov, H.E. (1990) Roshchinite - new mineral of the andorite group. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 119(5): 32-43.
Synonyms of Roshchinite
Other Language Names for Roshchinite
German:Roshchinit
Spanish:Roshchinita
Relationship of Roshchinite to other Species
Member of:
Other Members of this group:
Andreadiniite | CuHgAg7Pb7Sb24S48 | Mon. 2/m : P21/b |
Arsenquatrandorite | Ag17.6Pb12.8Sb38.1As11.5S96 | Mon. 2/m : P21/b |
Aschamalmite | Pb6-3xBi2+xS9 | Mon. 2/m : B2/m |
Clino-oscarkempffite | Ag15Pb6Sb21Bi18S72 | Mon. 2/m : P21/b |
Erzwiesite | Ag8Pb12Bi16S40 | Orth. mmm (2/m 2/m 2/m) : Cmcm |
Eskimoite | Ag7Pb10Bi15S36 | Mon. |
Fizélyite | Ag5Pb14Sb21S48 | Mon. 2/m |
Gustavite | AgPbBi3S6 | Orth. mmm (2/m 2/m 2/m) |
Heyrovskýite | Pb6Bi2S9 | Orth. mmm (2/m 2/m 2/m) : Cccm |
Holubite | Ag3Pb6(Sb8Bi3)S24 | Mon. 2/m |
Jasrouxite | Ag16Pb4(Sb24As16)S72 | Tric. 1 : P1 |
Lasmanisite | Ag12Pb13Mn11Sb44S96 | Orth. 2 2 2 : P21 21 21 |
Lillianite | Pb3-2xAgxBi2+xS6 | Orth. mmm (2/m 2/m 2/m) |
Menchettiite | AgPb2.40Mn1.60Sb3As2S12 | Mon. 2/m : P21/b |
Oscarkempffite | Ag10Pb4(Sb17Bi9)S48 | Orth. mm2 |
Ourayite | Ag3Pb4Bi5S13 | Orth. |
Oyonite | Ag3Mn2Pb4Sb7As4S24 | Mon. 2/m |
Quatrandorite | AgPbSb3S6 | Mon. 2/m : P21/b |
Ramdohrite | Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24 | Mon. 2/m |
Schirmerite | PbAgBi3S6 - Pb3Ag1.5Bi3.5S9 | Orth. |
Senandorite | AgPbSb3S6 | Orth. mm2 : Pmn21 |
Staročeskéite | Ag0.70Pb1.60(Bi1.35Sb1.35)Σ2.70S6 | Orth. mmm (2/m 2/m 2/m) : Cmcm |
Terrywallaceite | AgPb(Sb,Bi)3S6 | Mon. 2/m : P21/b |
Treasurite | Ag7Pb6Bi15S32 | Mon. |
Uchucchacuaite | AgMnPb3Sb5S12 | Orth. mmm (2/m 2/m 2/m) : Pmmm |
Ustarasite | Pb(Bi,Sb)6S10 (?) | |
Vikingite | Ag5Pb8Bi13S30 | Mon. 2/m : B2/m |
Xilingolite | Pb3Bi2S6 | Mon. |
Related Minerals - Strunz-mindat Grouping
2.JB. | Senandorite | AgPbSb3S6 |
2.JB. | Oscarkempffite | Ag10Pb4(Sb17Bi9)S48 |
2.JB. | Chukotkaite | AgPb7Sb5S15 |
2.JB. | Arsenquatrandorite | Ag17.6Pb12.8Sb38.1As11.5S96 |
2.JB. | Clino-oscarkempffite | Ag15Pb6Sb21Bi18S72 |
2.JB. | Andreadiniite | CuHgAg7Pb7Sb24S48 |
2.JB. | Ginelfite | Ag2(Ag0.5Fe)TlPb23.5(Sb,As)33.5S76 |
2.JB. | Lazerckerite | Ag3.75Pb4.50(Sb7.75Bi4)S24 |
2.JB. | Lasmanisite | Ag12Pb13Mn11Sb44S96 |
2.JB. | Montpelvouxite | AgPb16Sb27As18S84 |
2.JB. | Selenojunoite | Cu2Pb3Bi8Se16 |
2.JB.05 | Diaphorite | Ag3Pb2Sb3S8 |
2.JB.10 | Cosalite | Pb2Bi2S5 |
2.JB.15 | Freieslebenite | AgPbSbS3 |
2.JB.15 | Marrite | AgPbAsS3 |
2.JB.20 | Cannizzarite | Pb48Bi56S132 |
2.JB.20 | Wittite | Pb9Bi12(S,Se)27 |
2.JB.25a | Junoite | Cu2Pb3Bi8(S,Se)16 |
2.JB.25i | Neyite | Ag2Cu6Pb25Bi26S68 |
2.JB.25c | Nordströmite | CuPb3Bi7(Se4S10) |
2.JB.25g | Nuffieldite | Cu1.4Pb2.4Bi2.4Sb0.2S7 |
2.JB.25d | Proudite | CuPb7.5Bi9.33(S,Se)22 |
2.JB.25h | Weibullite | Pb5Bi8Se7S11 |
2.JB.25b | Felbertalite | Cu2Pb6Bi8S19 |
2.JB.25j | Rouxelite | Cu2HgPb23Sb27S65.5 |
2.JB.25f | Ángelaite | Cu2AgPbBiS4 |
2.JB.25i | Cuproneyite | Cu7Pb27Bi25S68 |
2.JB.30a | Geocronite | Pb14Sb6S23 |
2.JB.30a | Jordanite | Pb14As6S23 |
2.JB.30b | Kirkiite | Pb10Bi3As3S19 |
2.JB.30c | Tsugaruite | Pb28As15S50Cl |
2.JB.30a | Marcobaldiite | Pb12(Sb3As2Bi)Σ6S21 |
2.JB.30a | Arsenmarcobaldiite | Pb12(As3.2Sb2.8)Σ6S21 |
2.JB.35c | Pillaite | Pb9Sb10S23ClO0.5 |
2.JB.35a | Zinkenite | Pb9Sb22S42 |
2.JB.35b | Scainiite | Pb14Sb30S54O5 |
2.JB.35d | Pellouxite | (Cu,Ag)Pb10Sb12S27O(Cl,S)0.6 |
2.JB.35f | Tubulite | Ag2Pb22Sb20S53 |
2.JB.35e | Chovanite | Pb15-2xSb14+2xS36Ox (x ~ 0.2) |
2.JB.40b | Aschamalmite | Pb6-3xBi2+xS9 |
2.JB.40a | Bursaite | Pb5Bi4S11 (?) |
2.JB.40b | Eskimoite | Ag7Pb10Bi15S36 |
2.JB.40a | Fizélyite | Ag5Pb14Sb21S48 |
2.JB.40a | Gustavite | AgPbBi3S6 |
2.JB.40a | Lillianite | Pb3-2xAgxBi2+xS6 |
2.JB.40c | Ourayite | Ag3Pb4Bi5S13 |
2.JB.40a | Ramdohrite | Pb5.9Fe0.1Mn0.1In0.1Cd0.2Ag2.8Sb10.8S24 |
2.JB.40d | Schirmerite | PbAgBi3S6 - Pb3Ag1.5Bi3.5S9 |
2.JB.40a | Treasurite | Ag7Pb6Bi15S32 |
2.JB.40a | Uchucchacuaite | AgMnPb3Sb5S12 |
2.JB.40e | Ustarasite | Pb(Bi,Sb)6S10 (?) |
2.JB.40a | Vikingite | Ag5Pb8Bi13S30 |
2.JB.40a | Xilingolite | Pb3Bi2S6 |
2.JB.40b | Heyrovskýite | Pb6Bi2S9 |
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 | Quatrandorite | AgPbSb3S6 |
2.JB.40a | Menchettiite | AgPb2.40Mn1.60Sb3As2S12 |
2.JB.40a | Terrywallaceite | AgPb(Sb,Bi)3S6 |
2.JB.40a | Jasrouxite | Ag16Pb4(Sb24As16)S72 |
2.JB.40a | Erzwiesite | Ag8Pb12Bi16S40 |
2.JB.40a | Staročeskéite | Ag0.70Pb1.60(Bi1.35Sb1.35)Σ2.70S6 |
2.JB.40a | Oyonite | Ag3Mn2Pb4Sb7As4S24 |
2.JB.40a | Holubite | Ag3Pb6(Sb8Bi3)S24 |
2.JB.40b | Baiamareite | Ag4Pb12Fe4Sb20S48 |
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 Roshchinite
mindat.org URL:
https://www.mindat.org/min-3457.html
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References for Roshchinite
Localities for Roshchinite
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).
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.
All localities listed without proper references should be considered as questionable.
Bolivia | |
| Kempff et al. (La Paz, 2009) +1 other reference |
Hungary | |
| Papp et al. (2022) |
Kazakhstan (TL) | |
| DAN-SSSR (1990) +3 other references |
Russia | |
| Kasatkin et al. (2020) |
Senegal | |
| The Massawa gold deposit et al. (Trans. Inst. Min. Metall. B) |
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Kvartsitovje Gorki gold deposit, Aksu, Stepnogorsk, Akmola Region, Kazakhstan