Wavelength	R₁	R₂
400nm	19%	21.75%
420nm	18.55%	21.1%
440nm	17.9%	20.55%
460nm	17.25%	19.95%
470nm	17.05%	19.6%
480nm	16.9%	19.3%
500nm	16.6%	18.9%
520nm	16.35%	18.5%
540nm	16.15%	18.25%
546nm	16.1%	18.15%
560nm	16%	17.95%
580nm	15.9%	17.75%
589nm	15.85%	17.7%
600nm	15.8%	17.6%
620nm	15.7%	17.45%
640nm	15.6%	17.4%
650nm	15.55%	17.4%
660nm	15.5%	17.4%
680nm	15.5%	17.4%
700nm	15.5%	17.4%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. 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

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:

P1 2₁/c 1

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 Å³

Crystal StructureHide

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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)
0018365	Pseudolyonsite	Zelenski 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 23 475-481		2011	Tolbachik volcano, Kamchatka Peninsula, Russia	0	293
0018360	Pseudolyonsite	Shannon R D, Calvo C (1972) Crystal structure of a new form of Cu3V2O8 Canadian Journal of Chemistry 50 3944-3949		1972	synthetic	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Pseudolyonsite'
loop_
_publ_author_name
'Zelenski M E'
'Zubkova N V'
'Pekov I V'
'Boldyreva M M'
'Pushcharovsky D Y'
'Nekrasov A N'
_journal_name_full 'European Journal of Mineralogy'
_journal_volume 23 
_journal_year 2011
_journal_page_first 475
_journal_page_last 481
_publ_section_title
;
 Pseudolyonsite, Cu3(VO4)2, a new mineral species
 from the Tolbachik volcano, Kamchatka Peninsula, Russia
;
_database_code_amcsd 0018365
_chemical_compound_source 'Tolbachik volcano, Kamchatka Peninsula, Russia'
_chemical_formula_sum 'V1.94 Mo.04 (Cu2.64 Zn.36) O8'
_cell_length_a 6.2695
_cell_length_b 8.0195
_cell_length_c 6.3620
_cell_angle_alpha 90
_cell_angle_beta 111.96
_cell_angle_gamma 90
_cell_volume 296.662
_exptl_crystal_density_diffrn      4.724
_symmetry_space_group_name_H-M 'P 1 21/c 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
V   0.24993   0.61919   0.14155   0.97000   0.00670
Mo   0.24993   0.61919   0.14155   0.02000   0.00670
Cu1   0.00000   0.00000   0.00000   0.88000   0.01150
Zn1   0.00000   0.00000   0.00000   0.12000   0.01150
Cu2   0.26769   0.24606   0.39505   0.88000   0.01039
Zn2   0.26769   0.24606   0.39505   0.12000   0.01039
O1   0.01370   0.76110   0.03350   1.00000   0.00970
O2   0.23090   0.49350   0.35650   1.00000   0.01090
O3   0.50300   0.72660   0.24010   1.00000   0.00970
O4   0.75340   0.50040   0.07380   1.00000   0.01070

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
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 Mode	Earliest 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:

Vergasovaite	Rutile	Piypite	Palmierite	Magnetite
Lyonsite	Langbeinite	Lammerite	Hematite	Gold
Filatovite	Aphthitalite

Synonyms of PseudolyonsiteHide

IMA2009-062

Common AssociatesHide

Associated Minerals Based on Photo Data:

2 photos of Pseudolyonsite associated with Piypite	K₄Cu₄O₂(SO₄)₄ · (Na,Cu)Cl
2 photos of Pseudolyonsite associated with Lyonsite	Cu₃Fe₄(VO₄)₆
1 photo of Pseudolyonsite associated with Cupromolybdite	Cu₃O(MoO₄)₂

Related Minerals - Strunz-mindat Grouping Hide

8.AB.	Rodolicoite	Fe³⁺PO₄	Trig. 3 2 : P3₁ 2 1
8.AB.	Johanngeorgenstadtite	Ni²⁺_4.5(AsO₄)₃	Mon. 2/m : B2/b
8.AB.	Borisenkoite	Cu₃[(V,As)O₄]₂	Mon. 2/m : P2₁/b
8.AB.	Niasite	Ni²⁺_4.5(AsO₄)₃	Tet. 4 2m : I4 2d
8.AB.	Olsenite	KFe₄(PO₄)₃	Orth. mmm (2/m 2/m 2/m) : Pnnm
8.AB.	Karwowskiite	Ca₉Mg(Fe²⁺_0.5◻_0.5)(PO₄)₇	Trig. 3m : R3c
8.AB.05	Farringtonite	Mg₃(PO₄)₂	Mon. 2/m
8.AB.10	Ferrisicklerite	Li_1-x(Fe³⁺_xFe²⁺_1-x)PO₄	Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10	Heterosite	(Fe³⁺,Mn³⁺)PO₄	Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10	Lithiophilite	LiMn²⁺PO₄	Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10	Natrophilite	NaMn²⁺PO₄	Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10	Purpurite	Mn³⁺(PO₄)	Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10	Sicklerite	Li_1-x(Mn³⁺_xMn²⁺_1-x)PO₄	Orth. mmm (2/m 2/m 2/m)
8.AB.10	Simferite	LiMg(PO₄)	Orth.
8.AB.10	Triphylite	LiFe²⁺PO₄	Orth. mmm (2/m 2/m 2/m) : Pmna
8.AB.10	Karenwebberite	NaFe²⁺PO₄	Orth. mmm (2/m 2/m 2/m) : Pnma
8.AB.15	Sarcopside	Fe²⁺₃(PO₄)₂	Mon. 2/m : P2₁/b
8.AB.15	Chopinite	Mg₃(PO₄)₂	Mon. 2/m : P2₁/b
8.AB.15	Zavalíaite	Mn²⁺₃(PO₄)₂	Mon. 2/m : P2₁/b
8.AB.20	Beusite	Mn²⁺Mn²⁺₂ (PO₄)₂	Mon. 2/m : P2₁/b
8.AB.20	Graftonite	Fe²⁺Fe²⁺₂(PO₄)₂	Mon. 2/m : P2₁/b
8.AB.20	Graftonite-(Ca)	CaFe²⁺₂(PO₄)₂	Mon. 2/m : P2₁/b
8.AB.20	Graftonite-(Mn)	MnFe²⁺₂(PO₄)₂	Mon. 2/m : P2₁/b
8.AB.20	Beusite-(Ca)	CaMn²⁺₂(PO₄)₂	Mon. 2/m : P2₁/b
8.AB.25	Xanthiosite	Ni₃(AsO₄)₂	Mon. 2/m : P2₁/b
8.AB.30	Lammerite	Cu₃(AsO₄)₂	Mon. 2/m : P2₁/b
8.AB.30	Paralammerite	Cu₃(AsO₄)₂	Mon. 2/m : P2₁/b
8.AB.35	Mcbirneyite	Cu₃(VO₄)₂	Tric. 1 : P1
8.AB.35	Stranskiite	Zn₂Cu(AsO₄)₂	Tric. 1 : P1
8.AB.40	Lyonsite	Cu₃Fe₄(VO₄)₆	Orth. mmm (2/m 2/m 2/m)
8.AB.40	Michalskiite	Fe³⁺_1.33Cu²⁺₂(MgFe³⁺)₂(VO₄)₆	Orth. mmm (2/m 2/m 2/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

mindat.org URL:

https://www.mindat.org/min-40571.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for PseudolyonsiteHide

Reference List:

Zelenski, Michael E., Zubkova, Natalia V., Pekov, Igor V., Boldyreva, Maya M., Yu. Pushcharovsky, Dmitry, Nekrasov, Aleksey N. (2011) Pseudolyonsite, Cu3(VO4)2, a new mineral species from the Tolbachik volcano, Kamchatka Peninsula, Russia. European Journal of Mineralogy, 23 (3) 475-481 doi:10.1127/0935-1221/2011/0023-2101

(2023) Pseudolyonsite. Handbook of Mineralogy. Mineralogical Society of America

Localities for PseudolyonsiteHide

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.

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 ⓘ Tolbachik Volcanic field (TL)	Zelenski et al. (2011)
Great Fissure eruption (Main Fracture) Northern Breakthrough (North Breach) Second scoria cone ⓘ Yadovitaya fumarole	In the collection of Brent Thorne. +1 other reference

Pseudolyonsite

About PseudolyonsiteHide

Unique IdentifiersHide

IMA Classification of PseudolyonsiteHide

Classification of PseudolyonsiteHide

Mineral SymbolsHide

Physical Properties of PseudolyonsiteHide

Optical Data of PseudolyonsiteHide