Leningradite
A valid IMA mineral species
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About Leningradite
Formula:
PbCu3(VO4)2Cl
Colour:
Intense red
Lustre:
Vitreous
Hardness:
4½
Specific Gravity:
4.81
Crystal System:
Orthorhombic
Name:
Named after the city St. Petersburg (previously Leningrad), where the material was investigated.
This page provides mineralogical data about Leningradite.
Unique Identifiers
Mindat ID:
2374
Long-form identifier:
mindat:1:1:2374:6
GUID
(UUID V4):
(UUID V4):
7243a113-15f9-4d25-8081-2e21de202e71
Classification of Leningradite
Approved
Approval year:
1988
First published:
1990
8.BH.65
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
41.5.17.1
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
22.2.16
22 : Phosphates, Arsenates or Vanadates with other Anions
2 : Phosphates, arsenates or vanadates with chloride
22 : Phosphates, Arsenates or Vanadates with other Anions
2 : Phosphates, arsenates or vanadates with chloride
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 |
|---|---|---|
| Lng | 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 Leningradite
Vitreous
Colour:
Intense red
Comment:
Very thin grains (<0.02 mm thick) are transparent and golden-red in color.
Streak:
Orange-red
Hardness:
4½ on Mohs scale
Hardness:
VHN10=180 - 345 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
On (010)
On (010)
Density:
4.81 g/cm3 (Measured) 4.97 g/cm3 (Calculated)
Optical Data of Leningradite
Type:
Biaxial (-)
Dispersion:
Strong; the type description reports no dispersion.
Optical Extinction:
X = b; Y = a; Z = c.
Comments:
No pleochroism in the (010) plane.
Comments:
α not determined because all grains were {010} cleavage sections.
Chemical Properties of Leningradite
Formula:
PbCu3(VO4)2Cl
IMA Formula:
PbCu3(VO4)2Cl2
Crystallography of Leningradite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Ibam
Cell Parameters:
a = 9.005(7) Å, b = 11.046(9) Å, c = 9.349(7) Å
Ratio:
a:b:c = 0.815 : 1 : 0.846
Unit Cell V:
929.9 ų
Z:
4
Morphology:
Thin tabular habit with dominant {010}. The contours of the tablets are irregular, owing to the development of {101} prism faces.
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) |
|---|---|---|---|---|---|---|---|
| 0006144 | Leningradite | Siidra O I, Krivovichev S V, Armbruster T, Filatov S K, Pekov I V (2007) The crystal structure of leningradite, PbCu3(VO4)2Cl2 The Canadian Mineralogist 45 445-449 |  | 2007 | Great fissure Tolbachik eruption, Kamchatka Peninsula, Russia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.418 Å | (100) |
| 2.763 Å | (95) |
| 2.358 Å | (73) |
| 2.548 Å | (66) |
| 3.242 Å | (62) |
| 5.545 Å | (49) |
| 1.847 Å | (49) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45b : [Other oxidized fumarolic minerals] |
Type Occurrence of Leningradite
General Appearance of Type Material:
Single poorly faceted red-brown rhomboidal crystals or flakes, or as intergrowths of fine tabular crystals. The crystals/flakes measured up to 0.3 mm across (ordinarily 0.1 mm) and about 0.3 mm thick. The intergrowth aggregates had the appearance of microscopic spheres or globules up to 0.6 mm in diameter (usually 0.2-0.3 mm), with rough maroon-brown surfaces. Internally, some of the spherical particles resembled spherulites, with the crystals oriented in an orderly fashion from the center to the edges; in other cases the crystals were in a spiral arrangement.
Place of Conservation of Type Material:
Mining Institute, St. Petersburg, Russia, 2003/1.
Geological Setting of Type Material:
Fumarole.
Associated Minerals at Type Locality:
Synonyms of Leningradite
Other Language Names for Leningradite
German:Leningradit
Spanish:Leningradita
Related Minerals - Strunz-mindat Grouping
| 8.BH. | Crimsonite | PbFe3+2(PO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
| 8.BH. | Plumboperloffite | PbMn2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : P21/m |
| 8.BH. | Reznitskyite | CaMg(VO4)F | Mon. 2/m : B2/b |
| 8.BH. | Cuprozheshengite | Pb4CuZn2(AsO4)2(PO4)2(OH)2 | Tric. 1 : P1 |
| 8.BH. | Zheshengite | Pb4ZnZn2(AsO4)2(PO4)2(OH)2 | Tric. 1 : P1 |
| 8.BH.05 | Thadeuite | Ca(Mg,Fe2+)3(PO4)2(OH,F)2 | Orth. 2 2 2 : C2 2 21 |
| 8.BH.10 | Durangite | NaAl(AsO4)F | Mon. 2/m : B2/b |
| 8.BH.10 | Isokite | CaMg(PO4)F | Mon. 2/m : B2/b |
| 8.BH.10 | Lacroixite | NaAl(PO4)F | Mon. 2/m : B2/b |
| 8.BH.10 | Maxwellite | NaFe3+(AsO4)F | Mon. 2/m : P2/m |
| 8.BH.10 | Panasqueiraite | CaMg(PO4)(OH,F) | Mon. |
| 8.BH.10 | Kononovite | NaMg(SO4)F | Mon. 2/m : B2/b |
| 8.BH.10 | Arsenatrotitanite | NaTi(AsO4)O | Mon. 2/m : B2/b |
| 8.BH.15 | Drugmanite | Pb2(Fe3+,Al)(PO4)(PO3OH)(OH)2 | Mon. 2/m : P21/b |
| 8.BH.20 | Bjarebyite | (Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3 | Mon. 2/m : P21/m |
| 8.BH.20 | Cirrolite | Ca3Al2(PO4)3(OH)3 (?) | |
| 8.BH.20 | Kulanite | Ba(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3 | Mon. 2/m : P21/m |
| 8.BH.20 | Penikisite | Ba(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3 | Mon. 2/m : P21/m |
| 8.BH.20 | Perloffite | Ba(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3 | Mon. 2/m : P21/m |
| 8.BH.20 | Johntomaite | BaFe2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : P21/m |
| 8.BH.20 | Strontioperloffite | SrMn2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : P21/m |
| 8.BH.25 | Bertossaite | (Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4 | Orth. mmm (2/m 2/m 2/m) |
| 8.BH.25 | Palermoite | (Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4 | Orth. mmm (2/m 2/m 2/m) |
| 8.BH.25 | Natropalermoite | Na2SrAl4(PO4)4(OH)4 | Orth. mmm (2/m 2/m 2/m) |
| 8.BH.30 | Carminite | PbFe3+2(AsO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
| 8.BH.30 | Sewardite | CaFe3+2(AsO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
| 8.BH.35 | Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Austinite | CaZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Cobaltaustinite | CaCo(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Conichalcite | CaCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Gabrielsonite | PbFe3+(As3+O3)O | Orth. mm2 : Pmc21 |
| 8.BH.35 | Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Tangeite | CaCu(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Duftite-alpha | PbCu(AsO4)(OH) | |
| 8.BH.35 | Gottlobite | CaMg(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.35 | Hermannroseite | CaCu(PO4)(OH) | Orth. 2 2 2 : P21 21 21 |
| 8.BH.40 | Čechite | PbFe2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) |
| 8.BH.40 | Descloizite | PbZn(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 8.BH.40 | Mottramite | PbCu(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 8.BH.40 | Pyrobelonite | PbMn2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 8.BH.40 | Khorixasite | (Bi0.67◻0.33)Cu(VO4)(OH) | Mon. 2/m : P2/m |
| 8.BH.45 | Bayldonite | PbCu3(AsO4)2(OH)2 | Mon. 2/m : B2/b |
| 8.BH.45 | Vésigniéite | BaCu3(VO4)2(OH)2 | Mon. 2/m : B2/m |
| 8.BH.50 | Paganoite | NiBi(AsO4)O | Tric. 1 : P1 |
| 8.BH.55 | Harrisonite | Ca(Fe2+,Mg)6(PO4)2(SiO4)2 | Trig. 3m (3 2/m) : R3m |
| 8.BH.55 | Jagowerite | BaAl2(PO4)2(OH)2 | Tric. |
| 8.BH.60 | Attakolite | CaMn2+Al4(SiO3OH)(PO4)3(OH)4 | Mon. 2/m : B2/m |
| 8.BH.70 | Katiarsite | KTiO(AsO4) | Orth. mm2 : Pna21 |
| 8.BH.70 | Yurgensonite | K2SnTiO2(AsO4)2 | Orth. mm2 : Pna21 |
| 8.BH.75 | Melanarsite | K3Cu7Fe3+O4(AsO4)4 | Mon. 2/m : B2/b |
| 8.BH.80 | Moraskoite | Na2Mg(PO4)F | Orth. mmm (2/m 2/m 2/m) : Pbcn |
| 8.BH.80 | Evseevite | Na2Mg(AsO4)F | Orth. mmm (2/m 2/m 2/m) : Pbcn |
| 8.BH.85 | Piccoliite | NaCaMn3+2(AsO4)2O(OH) | Orth. mmm (2/m 2/m 2/m) : Pbcm |
Other Information
Notes:
Relatively stable in air and insoluble in water.
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 Leningradite
mindat.org URL:
https://www.mindat.org/min-2374.html
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References for Leningradite
Reference List:
Localities for Leningradite
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.
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Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia