Named in honor of Lubor Žák (29 July 1925, Prague, Czechoslovakia - 6 August 2008, Prague, Czech Republic), prominent mineralogist and crystallographer, and professor in the Department of Mineralogy, Geochemistry and Crystallography, Charles University in Prague.

Type Locality:

ⓘ Vorontsovskoe deposit (Vorontsovsk gold deposit; Vorontsovka deposit), Tur'insk, Turya river, Serovsky District, Sverdlovsk Oblast, Russia

Chemically a bit similar to (but more simple that) menchettiite and oyonite. Also compare clerite.

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Unique IdentifiersHide

Mindat ID:

54367

Long-form identifier:

mindat:1:1:54367:1

GUID
(UUID V4):

a1448648-5e9c-42cf-a559-3a197976980a

IMA Classification of LuboržákiteHide

IMA status:

Approved

First published:

2020

Type description reference:

Kasatkin, Anatoly V., Makovicky, Emil, Plášil, Jakub, Škoda, Radek, Agakhanov, Atali A., Stepanov, Sergey Y., Palamarchuk, Roman S. (2020) Luboržákite, Mn₂AsSbS₅, a new member of pavonite homologous series from Vorontsovskoe gold deposit, Northern Urals, Russia. Mineralogical Magazine, 84 (5) 738-745 doi:10.1180/mgm.2020.48

Classification of LuboržákiteHide

Strunz-mindat (2024):

2.JA.

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
J : Sulfosalts of PbS archetype
A : Galena derivatives with little or no Pb

Mineral SymbolsHide

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

Symbol	Source	Reference
Lbž	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 LuboržákiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Black

Streak:

Black

Hardness:

4 - 4½ on Mohs scale

Hardness:

VHN₃₀=243 kg/mm² - Vickers

Tenacity:

Brittle

Cleavage:

None Observed

Parting:

none

Fracture:

Irregular/Uneven

Density:

4.181 g/cm³ (Calculated)

Optical Data of LuboržákiteHide

Anisotropism:

Slightly with rotation tints varying from dark grey to grey

Bireflectance:

distinct

Reflectivity:

Wavelength	R₁	R₂
400nm	24.3%	26.9%
420nm	23.9%	26.4%
440nm	23.7%	26.2%
460nm	23.7%	26.0%
470nm	23.6%	25.3%
480nm	22.9%	25.2%
500nm	22.9%	25.2%
520nm	22.7%	24.8%
540nm	22.4%	24.8%
546nm	22.4%	24.7%
560nm	22.3%	24.6%
580nm	22.1%	24.4%
589nm	22.1%	24.3%
600nm	22.0%	24.2%
620nm	22.0%	24.1%
640nm	21.9%	24.1%
650nm	21.8%	23.8%
660nm	21.4%	23.5%
680nm	21.3%	23.4%
700nm	21.0%	23.1%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 26.9%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

Tin white

Internal Reflections:

none

Pleochroism:

Non-pleochroic

Chemistry of LuboržákiteHide

Mindat Formula:

Mn₂AsSbS₅

Elements listed:

As, Mn, S, Sb - search for minerals with similar chemistry

Crystallography of LuboržákiteHide

Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Space Group:

B2/m

Setting:

C2/m

Cell Parameters:

a = 12.5077(6) Å, b = 3.8034(2) Å, c = 16.0517(8) Å
β = 94.190(4)°

Ratio:

a:b:c = 3.289 : 1 : 4.22

Unit Cell V:

761.57 Å³ (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
3.486 Å	(50)
3.286 Å	(50)
3.262 Å	(36)
2.806 Å	(39)
2.788 Å	(57)
2.690 Å	(100)
1.904 Å	(37)
1.902 Å	(36)

Geological EnvironmentHide

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 LuboržákiteHide

Type Locality:

ⓘ Vorontsovskoe deposit (Vorontsovsk gold deposit; Vorontsovka deposit), Tur'insk, Turya river, Serovsky District, Sverdlovsk Oblast, Russia

General Appearance of Type Material:

Long-prismatic crystals up to 70 x 20 μm and anhedral grains of the same size embedded in the matrix of Mn-bearing dolomite and Mn-bearing calcite.

Place of Conservation of Type Material:

Collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5498/1.

Geological Setting of Type Material:

Pyrite - realgar - stibnite ore type.

Associated Minerals at Type Locality:

Twinnite	Stibnite	Sphalerite	Routhierite	Realgar
Pyrite	Orpiment	Gold	Écrinsite	Coloradoite
Clerite	Chabournéite	Boscardinite	Alabandite	Aktashite

Reference:

Kasatkin, A. V., Makovicky, E., Plášil, J., Škoda, R., Agakhanov, A. A., Stepanov, S. Y., & Palamarchuk, R. S. (2020). Luboržákite, Mn2AsSbS5, a new member of pavonite homologous series from Vorontsovskoe gold deposit, Northern Urals, Russia. Mineralogical Magazine, 84(5), 738-745.

Relationship of Luboržákite to other SpeciesHide

Member of:

Pavonite Homologous Series Group

Other Members of this group:

Benjaminite	Ag₃Bi₇S₁₂	Mon. 2/m : B2/m
Cupromakopavonite	Ag₃Cu₈Pb₄Bi₁₉S₃₈	Mon. 2/m : B2/m
Cupromakovickyite	Cu₄AgPb₂Bi₉S₁₈	Mon. 2/m : B2/m
Cupropavonite	Cu_0.9Ag_0.5Pb_0.6Bi_2.5S₅	Mon. 2/m : B2/m
Dantopaite	Ag₅Bi₁₃S₂₂	Mon. 2/m : B2/m
Makovickyite	Cu_1.12Ag_0.81Pb_0.27Bi_5.35S₉	Mon. 2/m
Mummeite	Cu_0.58Ag_3.11Pb_1.10Bi_6.65S₁₃	Mon.
Pavonite	AgBi₃S₅	Mon. 2/m : B2/m

Related Minerals - Strunz-mindat Grouping Hide

2.JA.	Ferdowsiite	Ag₈(Sb₅As₃)S₁₆	Mon. 2/m : P2₁/b
2.JA.	Sangenaroite	Ag₈(Sb_8-xAs_x)S_Σ16	Mon. 2/m
2.JA.05e	Benjaminite	Ag₃Bi₇S₁₂	Mon. 2/m : B2/m
2.JA.05g	Borodaevite	Ag₅(Bi,Pb,Fe)₈(Sb,Bi)₂S₁₇	Mon.
2.JA.05a	Cupropavonite	Cu_0.9Ag_0.5Pb_0.6Bi_2.5S₅	Mon. 2/m : B2/m
2.JA.05i	Livingstonite	HgSb₄S₆(S₂)	Mon. 2/m : B2/b
2.JA.05d	Makovickyite	Cu_1.12Ag_0.81Pb_0.27Bi_5.35S₉	Mon. 2/m
2.JA.05f	Mummeite	Cu_0.58Ag_3.11Pb_1.10Bi_6.65S₁₃	Mon.
2.JA.05a	Pavonite	AgBi₃S₅	Mon. 2/m : B2/m
2.JA.05b	Grumiplucite	HgBi₂S₄	Mon. 2/m : B2/m
2.JA.05h	Mozgovaite	PbBi₄S₇	Orth. mmm (2/m 2/m 2/m)
2.JA.05d	Cupromakovickyite	Cu₄AgPb₂Bi₉S₁₈	Mon. 2/m : B2/m
2.JA.05c	Kudriavite	(Cd,Pb)Bi₂S₄	Mon. 2/m : B2/m
2.JA.05a	Cupromakopavonite	Ag₃Cu₈Pb₄Bi₁₉S₃₈	Mon. 2/m : B2/m
2.JA.05	Dantopaite	Ag₅Bi₁₃S₂₂	Mon. 2/m : B2/m
2.JA.05	Selenodantopaite	Ag₅Bi₁₃Se₂₂	Mon. 2/m : B2/m
2.JA.10a	Cuprobismutite	Cu₈AgBi₁₃S₂₄	Mon. 2/m : B2/m
2.JA.10c	Hodrušite	Cu₈Bi₁₂S₂₂	Mon. 2/m
2.JA.10e	Padĕraite	Cu₇[(Cu,Ag)_0.33Pb_1.33Bi_11.33]S₂₂	Mon. 2/m : P2₁/m
2.JA.10d	Pizgrischite	(Cu,Fe)Cu₁₄PbBi₁₇S₃₅	Mon. 2/m : B2/m
2.JA.10b	Kupčíkite	Cu_3.4Fe_0.6Bi₅S₁₀	Mon. 2/m : B2/m
2.JA.15	Schapbachite	Ag_0.4Pb_0.2Bi_0.4S	Iso. m3m (4/m 3 2/m) : Fm3m
2.JA.15	Cuboargyrite	AgSbS₂	Iso. m3m (4/m 3 2/m)
2.JA.20	Bohdanowiczite	AgBiSe₂	Trig. 3m (3 2/m) : P3m1
2.JA.20	Matildite	AgBiS₂	Trig. 3 2 : P3₁ 2 1
2.JA.20	Volynskite	AgBiTe₂	Trig. 3m (3 2/m) : P3m1

Fluorescence of LuboržákiteHide

In UV light:

none

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 LuboržákiteHide

mindat.org URL:

https://www.mindat.org/min-54367.html
Please feel free to link to this page.

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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 LuboržákiteHide

Reference List:

Miyawaki, Ritsuro, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2020) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) - Newsletter 54. European Journal of Mineralogy, 32 (2) 275-283 doi:10.5194/ejm-32-275-2020

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

Localities for LuboržákiteHide

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)

Sverdlovsk Oblast

Serovsky District

Turya river

Tur'insk

ⓘ Vorontsovskoe deposit (Vorontsovsk gold deposit; Vorontsovka deposit) (TL)

Kasatkin et al. (2020) +1 other reference

Luboržákite

Unique IdentifiersHide

IMA Classification of LuboržákiteHide

Classification of LuboržákiteHide

Mineral SymbolsHide

Physical Properties of LuboržákiteHide

Optical Data of LuboržákiteHide

Chemistry of LuboržákiteHide

Crystallography of LuboržákiteHide

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Type Occurrence of LuboržákiteHide

Relationship of Luboržákite to other SpeciesHide

Related Minerals - Strunz-mindat GroupingHide

Fluorescence of LuboržákiteHide

Other InformationHide

Internet Links for LuboržákiteHide

References for LuboržákiteHide

Localities for LuboržákiteHide

Locality ListHide

Related Minerals - Strunz-mindat Grouping Hide