Kuznetsovite
A valid IMA mineral species
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About Kuznetsovite
Valery A. Kuznetsov
Formula:
[Hg2]2+Hg2+[AsO4]Cl
formula may instead be [Hg3]4+[AsO4]Cl, where the three Hg atoms occur as a polyatomic cluster.
Colour:
Brown, yellow
Lustre:
Adamantine, Vitreous
Hardness:
2½ - 3
Specific Gravity:
8.64 - 8.82
Crystal System:
Isometric
Name:
Named in honor of Valery Alekseevich Kuznetsov (Валерий Алексеевич Кузнецов) (12 April 1906, Nikolsk, Vologda province, Russian Empire - 4 August 1985, Novosibirsk, USSR), Russian geologist. He was an expert in magmatism and endogenous ore formation (mercury and non-ferrous metals) and discovered the Aktash and Peza mercury deposits (Gorny Altai).
According to Borisov et al. (2003) it might be possible that kuzetsovite - as terlinguaite - contains the [Hg3]4+ polycation.
Unique Identifiers
Mindat ID:
2301
Long-form identifier:
mindat:1:1:2301:2
IMA Classification of Kuznetsovite
Approved
IMA Formula:
Hg1+2Hg2+(As5+O4)Cl
Approval year:
1980
First published:
1980
Classification of Kuznetsovite
8.BO.35
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
O : With only large cations, (OH, etc.):RO4 about 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
O : With only large cations, (OH, etc.):RO4 about 1:1
23.5
23 : Arsenites
23 : Arsenites
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 |
|---|---|---|
| Kzn | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Pronunciation of Kuznetsovite
Pronunciation:
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
Physical Properties of Kuznetsovite
Adamantine, Vitreous
Colour:
Brown, yellow
Streak:
Orange
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven, Conchoidal
Density:
8.64 - 8.82 g/cm3 (Measured) 8.691 g/cm3 (Calculated)
Comment:
Some native mercury in measured SG
Optical Data of Kuznetsovite
Type:
Isotropic
Reflectivity:
| Wavelength | R1 (%) |
|---|---|
| 460nm | 17.6% |
| 546nm | 16.9% |
| 590nm | 16.2% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 17.6%.
Internal Reflections:
Pale brown
Comments:
RI considerably higher than that of the "highest liquid of the standard set"
Chemistry of Kuznetsovite
Mindat Formula:
[Hg2]2+Hg2+[AsO4]Cl
formula may instead be [Hg3]4+[AsO4]Cl, where the three Hg atoms occur as a polyatomic cluster.
formula may instead be [Hg3]4+[AsO4]Cl, where the three Hg atoms occur as a polyatomic cluster.
Element Weights:
Elements listed:
Crystallography of Kuznetsovite
Crystal System:
Isometric
Class (H-M):
23 - Tetartoidal
Space Group:
P213
Cell Parameters:
a = 8.4013(2) Å
Unit Cell V:
592.98 ų (Calculated from Unit Cell)
Z:
4
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
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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) |
|---|---|---|---|---|---|---|---|
| 0015847 | Kuznetsovite | Weil M (2001) Preparation and crystal structures of (Hg3)(PO4)Cl, (Hg3)(AsO4)Cl and (Hg3)(AsO4)Br - mercury compounds with the triangular Hg4+3 cluster Zeitschrift fur Naturforschung B56 753-758 | 2001 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.53 Å | (100) |
| 2.81 Å | (70) |
| 4.86 Å | (60) |
| 3.43 Å | (60) |
| 1.834 Å | (60) |
| 4.21 Å | (50) |
| 3.77 Å | (50) |
Comments:
Arzak deposit, Russia. Data from the type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Kuznetsovite
Co-Type Localities:
Place of Conservation of Type Material:
Central Siberian Geological Museum, Inst. of Geology, Novosibirsk, Russia.
Geological Setting of Type Material:
Oxidation zone of cinnabar bearing mercury deposits.
Associated Minerals at Type Locality:
Synonyms of Kuznetsovite
Other Language Names for Kuznetsovite
Common Associates
Associations Based on Photo Data:
| 2 photos of Kuznetsovite associated with Quartz | SiO2 |
| 2 photos of Kuznetsovite associated with Cinnabar | HgS |
| 1 photo of Kuznetsovite associated with Eglestonite | [Hg2]2+3OCl3(OH) |
| 1 photo of Kuznetsovite associated with Calomel | [Hg2]2+Cl2 |
| 1 photo of Kuznetsovite associated with 'Chalcedony' | SiO2 |
| 1 photo of Kuznetsovite associated with Terlinguacreekite | Hg2+3Cl2O2 |
Related Minerals - Strunz-mindat Grouping
| 8.BO. | Ariegilatite | BaCa12(SiO4)4(PO4)2F2O |
| 8.BO. | Aravaite | Ba2Ca18(SiO4)6(PO4)3(CO3)F3O |
| 8.BO. | Theuerdankite | Ag3AsO4 |
| 8.BO.05 | Nacaphite | Na2Ca(PO4)F |
| 8.BO.10 | Petitjeanite | Bi3(PO4)2O(OH) |
| 8.BO.10 | Schumacherite | Bi3(VO4)2O(OH) |
| 8.BO.10 | Preisingerite | Bi3(AsO4)2O(OH) |
| 8.BO.15 | Hechtsbergite | Bi2(VO4)O(OH) |
| 8.BO.15 | Smrkovecite | Bi2(PO4)O(OH) |
| 8.BO.15 | Atelestite | Bi2(AsO4)O(OH) |
| 8.BO.20 | Sahlinite | Pb14(AsO4)2O9Cl4 |
| 8.BO.20 | Kombatite | Pb14(VO4)2O9Cl4 |
| 8.BO.25 | Heneuite | CaMg5(CO3)(PO4)3(OH) |
| 8.BO.30 | Nefedovite | Na5Ca4(PO4)4F |
| 8.BO.40 | Artsmithite | [Hg2]2+2Al(PO4)1.74(OH)1.78 |
| 8.BO.45 | Schlegelite | Bi7(AsO4)3(MoO4)2O4 |
| 8.BO.50 | Hereroite | [Pb32(O,◻)21](AsO4)2[(Si,As,V,Mo)O4]2Cl10 |
| 8.BO.50 | Erikjonssonite | (Pb32O21)[(V,Si,Mo,As)O4]4Cl9 |
| 8.BO.55 | Rudabányaite | (Ag2Hg2)(AsO4)Cl |
| 8.BO.60 | Segerstromite | Ca3(As5+O4)2[As3+(OH)3]2 |
| 8.BO.65 | Wiklundite | Pb2(Mn2+,Zn)3(Fe3+,Mn2+)2(Mn2+,Mg)19(As3+O3)2[(Si,As5+)O4]6(OH)18Cl6 |
Other Information
Notes:
The mineral is blackened by KOH, decolorized and decomposed by HCl, does not react with 1:1 HNO3.
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 Kuznetsovite
mindat.org URL:
https://www.mindat.org/min-2301.html
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References for Kuznetsovite
Reference List:
Cabri, Louis J., Fleischer, Michael, Pabst, Adolf (1981) New Mineral Names. American Mineralogist, 66 (9-10) 1099-1103
Romanenko, G. V., Pervukhina, N. V., Borisov, S. V., Magarill, S. A., Vasiliev, V. I. (1999) Crystal structure of kuznetsovite Hg3(AsO4)Cl. Journal of Structural Chemistry, 40 (2). 270-275 doi:10.1007/bf02903656
Weil, Matthias (2001) Preparation And Crystal Structures Of (Hg3)(PO4)Cl, (Hg3)(AsO4)Cl And (Hg3)(AsO4)Br - Mercury Compounds With The Triangular Hg34+ Cluster. Zeitschrift für Naturforschung B, 56 (8). 753-758 doi:10.1515/znb-2001-0808
Localities for Kuznetsovite
Showing 5 localities.
symbol to view information about a locality.
The 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.
Kyrgyzstan (TL) | |
| Vasil'ev et al. (1980) +3 other references |
| Kolesar et al. (1993) | |
Russia (TL) | |
| Vasil'ev et al. (1980) +2 other references |
| Pervukhina et al. (2003) |
USA | |
| Borja Sainz de Baranda Graf Collection |
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Khaidarkan Sb-Hg deposit, Aydarken, Kadamjay District, Batken Region, Kyrgyzstan