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Pseudolyonsite

A valid IMA mineral species
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06942480017272006977260.jpg
Pseudolyonsite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
03294210017272471955135.jpg
Pseudolyonsite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
00901090017272006937849.jpg
Pseudolyonsite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
06942480017272006977260.jpg
Pseudolyonsite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
03294210017272471955135.jpg
Pseudolyonsite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
00901090017272006937849.jpg
Pseudolyonsite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
06942480017272006977260.jpg
Pseudolyonsite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
03294210017272471955135.jpg
Pseudolyonsite

Yadovitaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
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About PseudolyonsiteHide

Formula:
Cu3(VO4)2
Colour:
Dark red with a brownish tint to black
Lustre:
Adamantine, Sub-Metallic
Hardness:
2 - 3
Specific Gravity:
4.749 (Calculated)
Crystal System:
Monoclinic
Name:
For the relation to lyonsite to which it is visually similar.
Dimorph of:
Mcbirneyite
Known as a synthetic compound. Possibly also polymorphous with borisenkoite.


Unique IdentifiersHide

Mindat ID:
40571
Long-form identifier:
mindat:1:1:40571:5

IMA Classification of PseudolyonsiteHide

IMA status:
Approved
IMA Formula:
Cu2+3(V5+O4)2
Approval year:
2009
First published:
2011

Classification of PseudolyonsiteHide

Strunz-mindat (2026):
8.AB.35

8 : PHOSPHATES, ARSENATES, VANADATES
A : Phosphates, etc. without additional anions, without H2O
B : With medium-sized cations
Dana 8th ed.:
38.3.8.4

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
3 : (AB)3(XO4)2

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
PlyoIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of PseudolyonsiteHide

Lustre:
Adamantine, Sub-Metallic
Transparency:
Translucent, Opaque
Colour:
Dark red with a brownish tint to black
Streak:
Reddish-brown
Hardness:
2 - 3 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Comment:
Long thin needles are flexible.
Density:
4.749 g/cm3 (Calculated)

Optical Data of PseudolyonsiteHide

Anisotropism:
Distinct
Reflectivity:
WavelengthR1 (%)R2 (%)
400nm19%21.75%
420nm18.55%21.1%
440nm17.9%20.55%
460nm17.25%19.95%
470nm17.05%19.6%
480nm16.9%19.3%
500nm16.6%18.9%
520nm16.35%18.5%
540nm16.15%18.25%
546nm16.1%18.15%
560nm16%17.95%
580nm15.9%17.75%
589nm15.85%17.7%
600nm15.8%17.6%
620nm15.7%17.45%
640nm15.6%17.4%
650nm15.55%17.4%
660nm15.5%17.4%
680nm15.5%17.4%
700nm15.5%17.4%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 21.75%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Grey with a weak bluish tint.
Internal Reflections:
Ubiquitous, red to orange.
Pleochroism:
Non-pleochroic

Chemistry of PseudolyonsiteHide

Mindat Formula:
Cu3(VO4)2
Element Weights:
Element% weight
Cu45.334 %
O30.438 %
V24.228 %

Calculated from ideal end-member formula.
Elements listed:
Cu, O, V - search for minerals with similar chemistry

Crystallography of PseudolyonsiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P121/c1
Cell Parameters:
a = 6.2695(4) Å, b = 8.0195(3) Å, c = 6.3620(3) Å
β = 111.96(1)°
Ratio:
a:b:c = 0.782 : 1 : 0.793
Unit Cell V:
296.66 ų
Z:
2

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0018365PseudolyonsiteZelenski M E, Zubkova N V, Pekov I V, Boldyreva M M, Pushcharovsky D Y, Nekrasov A N (2011) Pseudolyonsite, Cu3(VO4)2, a new mineral species from the Tolbachik volcano, Kamchatka Peninsula, Russia European Journal of Mineralogy 23 475-4812011Tolbachik volcano, Kamchatka Peninsula, Russia0293
0018360PseudolyonsiteShannon R D, Calvo C (1972) Crystal structure of a new form of Cu3V2O8 Canadian Journal of Chemistry 50 3944-39491972synthetic0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.70 Å(60)
3.30 Å(79)
3.22 Å(87)
3.18 Å(34)
2.894 Å(74)
2.761 Å(100)
2.479 Å(59)
2.419 Å(67)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
45b : [Other oxidized fumarolic minerals]
Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere<0.6
53 : Other minerals with taphonomic origins<0.4

Type Occurrence of PseudolyonsiteHide

Type Locality:
ⓘ Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
General Appearance of Type Material:
Needles that are 5–20 µm across and up to 0.5 mm in the length, which sometimes produce parallel intergrowths, sprays or openwork clusters up to 2 mm.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia (# 3879/1).
Geological Setting of Type Material:
Fumarole. Likely deposited at a temperature ranging from 200 to 300 °C.
Associated Minerals at Type Locality:
AphthitaliteFilatoviteNative GoldHematiteLammerite
LangbeiniteLyonsiteMagnetitePalmieritePiypite
RutileVergasovaite

Synonyms of PseudolyonsiteHide

Other Language Names for PseudolyonsiteHide

Common AssociatesHide

Associations Based on Photo Data:
2 photos of Pseudolyonsite associated with LyonsiteCu3Fe4(VO4)6
2 photos of Pseudolyonsite associated with PiypiteK4Cu4O2(SO4)4 · (Na,Cu)Cl
1 photo of Pseudolyonsite associated with CupromolybditeCu3O(MoO4)2

Related Minerals - Strunz-mindat GroupingHide

8.AB.KryzaiteNa4(MgCr)(PO4)3Trig. 3m(32/m) : R3c
8.AB.NiasiteNi2+4.5(AsO4)3Tet. 42m : I42d
8.AB.JohanngeorgenstadtiteNi2+4.5(AsO4)3Mon. 2/m : B2/b
8.AB.RodolicoiteFe3+PO4Trig. 32 : P3121
8.AB.KarwowskiiteCa9Mg(Fe2+0.5◻0.5)(PO4)7Trig. 3m : R3c
8.AB.OlseniteKFe4(PO4)3Orth. mmm(2/m2/m2/m) : Pnnm
8.AB.BorisenkoiteCu3[(V,As)O4]2Mon. 2/m : P21/b
8.AB.05FarringtoniteMg3(PO4)2Mon. 2/m
8.AB.10NatrophiliteNaMn2+PO4Orth. mmm(2/m2/m2/m) : Pmna
8.AB.10'Sicklerite'Li1-x(Mn3+xMn2+1-x)PO4Orth. mmm(2/m2/m2/m)
8.AB.10SimferiteLiMg(PO4)Orth.
8.AB.10HeterositeFe3+(PO4)Orth. mmm(2/m2/m2/m) : Pmna
8.AB.10LithiophiliteLiMn2+PO4Orth. mmm(2/m2/m2/m) : Pmna
8.AB.10KarenwebberiteNaFe2+PO4Orth. mmm(2/m2/m2/m) : Pnma
8.AB.10TriphyliteLiFe2+PO4Orth. mmm(2/m2/m2/m) : Pmna
8.AB.10'Ferrisicklerite'Li1-x(Fe3+xFe2+1-x)PO4Orth. mmm(2/m2/m2/m) : Pmna
8.AB.10PurpuriteMn3+(PO4)Orth. mmm(2/m2/m2/m) : Pmna
8.AB.15ZavalíaiteMn2+3(PO4)2Mon. 2/m : P21/b
8.AB.15ChopiniteMg3(PO4)2Mon. 2/m : P21/b
8.AB.15SarcopsideFe2+3(PO4)2Mon. 2/m : P21/b
8.AB.20BeusiteMn2+Mn2+2 (PO4)2Mon. 2/m : P21/b
8.AB.20Graftonite-(Ca)CaFe2+2(PO4)2Mon. 2/m : P21/b
8.AB.20Graftonite-(Mn)MnFe2+2(PO4)2Mon. 2/m : P21/b
8.AB.20GraftoniteFe2+Fe2+2(PO4)2Mon. 2/m : P21/b
8.AB.20Beusite-(Ca)CaMn2+2(PO4)2Mon. 2/m : P21/b
8.AB.25XanthiositeNi3(AsO4)2Mon. 2/m : P21/b
8.AB.30LammeriteCu3(AsO4)2Mon. 2/m : P21/b
8.AB.30ParalammeriteCu3(AsO4)2Mon. 2/m : P21/b
8.AB.35McbirneyiteCu3(VO4)2Tric. 1 : P1
8.AB.35StranskiiteZn2Cu(AsO4)2Tric. 1 : P1
8.AB.40MichalskiiteFe3+1.33Cu2+2(MgFe3+)2(VO4)6Orth. mmm(2/m2/m2/m)
8.AB.40LyonsiteCu3Fe4(VO4)6Orth. mmm(2/m2/m2/m)

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 PseudolyonsiteHide

References for PseudolyonsiteHide

Localities for PseudolyonsiteHide

Showing 2 localities.

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.
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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.
Russia (TL)
 
  • Kamchatka Krai
    • Milkovsky District
Zelenski et al. (2011)
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
            • Second scoria cone
Thorne (n.d.) +2 other references
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