Named in 1988 by V. M. Kacholovskaya, B. S. Osipov, N. G. Nazarenko, V. A. Kukoev, A. O., Mazmanyan, I. N. Egorov, and L. N. Kaplunnik in honor of Tatiana Nikiforovna Chvileva (Татьяна Никифоровна Чвилева) (1925-), Russian mineralogist with IMGRE, Moscow, and a specialist ore minerals.

Type Locality:

ⓘ Akatui Pb-Zn deposit, Akatui, Alexandrovo-Zavodsky District, Zabaykalsky Krai, Russia

This page provides mineralogical data about Chvilevaite.

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Unique IdentifiersHide

Mindat ID:

1050

Long-form identifier:

mindat:1:1:1050:0

GUID
(UUID V4):

71b1a476-f43a-430a-804e-36ae42c3e5ce

IMA Classification of ChvilevaiteHide

IMA status:

Approved

IMA Formula:

Na(Cu,Fe,Zn)₂S₂

First published:

1988

Type description reference:

Kachalovskaya, V.M., Osipov, B.S., Nazarenko, N.G., Kukoev, V.A., Mazmanyan, A.O., Egorov, I.N., Kaplunnik, L.N. (1988) Chvilevaite - a new alkali sulfide with the composition Na(Cu,Fe,Zn)2S2. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 117(2) 204-207.

Classification of ChvilevaiteHide

Strunz-mindat (2024):

2.FB.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H₂O
B : With alkalies (without Cl, etc.)

Dana 8th ed.:

2.5.9.1

2 : SULFIDES
5 : A_mB_nX_p, with (m+n):p = 3:2

Hey's CIM Ref.:

3.0.3

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
0 : Sulphides etc. of the alkalis

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
Cvi	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 ChvilevaiteHide

Lustre:

Metallic

Transparency:

Opaque

Colour:

Bronze

Comment:

Tarnishes sooty black

Hardness:

3 on Mohs scale

Hardness:

VHN₂₀=110 - 153 kg/mm² - Vickers

Tenacity:

Brittle

Cleavage:

Perfect
on {0001}

Density:

3.94 g/cm³ (Calculated)

Optical Data of ChvilevaiteHide

Anisotropism:

Strong from black to white

Bireflectance:

Distinct

Reflectivity:

Wavelength	R₁	R₂
420nm	17.9%	17.9%
400nm	18.0%	17.7%
460nm	18.4%	17.5%
480nm	19.0%	17.4%
500nm	19.7%	17.3%
520nm	20.7%	17.4%
540nm	21.6%	17.5%
560nm	22.5%	17.7%
580nm	23.3%	17.8%
600nm	24.0%	18.0%
620nm	24.8%	18.2%
640nm	25.6%	18.5%
660nm	26.2%	18.8%
680nm	26.8%	19.1%
700nm	27.4%	19.4%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 27.4%.
R₁ shown in black, R₂ shown in red

Colour in reflected light:

Orange changing to rosy purple with time

Pleochroism:

Visible

Comments:

From light orange to dark gray with violet tint.

Chemistry of ChvilevaiteHide

Mindat Formula:

Na(Cu,Fe,Zn)₂S₄

Elements listed:

Cu, Fe, Na, S, Zn - search for minerals with similar chemistry

Common Impurities:

Ca,Mn,As

Crystallography of ChvilevaiteHide

Crystal System:

Trigonal

Class (H-M):

3m - Ditrigonal Pyramidal

Space Group:

R3m

Cell Parameters:

a = 3.873(1) Å, c = 6.848(1) Å

Ratio:

a:c = 1 : 1.768

Unit Cell V:

88.96 Å³ (Calculated from Unit Cell)

Morphology:

Tabular, prismatic and equant grains to 0.5mm

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)
0015619	Chvilevaite	Kaplunnik L N, Petrova I V, Pobedimskaya E A, Kachalovskaya V M, Osipov B S (1990) Crystal structure of natural alkaline sulfide, chvilevaite, Na(Cu,Fe,Zn)2S2 Soviet Physics Doklady 35 6-8		1990	Lake Baikal region, Russia	0	293

CIF Raw Data - click here to close

data_global
_chemical_name_mineral 'Chvilevaite'
loop_
_publ_author_name
'Kaplunnik L N'
'Petrova I V'
'Pobedimskaya E A'
'Kachalovskaya V M'
'Osipov B S'
_journal_name_full 'Soviet Physics Doklady'
_journal_volume 35 
_journal_year 1990
_journal_page_first 6
_journal_page_last 8
_publ_section_title
;
 Crystal structure of natural alkaline sulfide, chvilevaite, Na(Cu,Fe,Zn)2S2
;
_database_code_amcsd 0015619
_chemical_compound_source 'Lake Baikal region, Russia'
_chemical_formula_sum 'Na (Cu1.34 Fe.44 Zn.22) S2'
_cell_length_a 3.873
_cell_length_b 3.873
_cell_length_c 6.848
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 88.959
_exptl_crystal_density_diffrn      3.943
_symmetry_space_group_name_H-M 'P 3 m 1'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,-x,z'
  '-y,x-y,z'
  'x,x-y,z'
  '-x+y,-x,z'
  '-x+y,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
Na   0.33333   0.66667   0.73800   1.00000   0.00887
CuM1   0.66667   0.33333   0.10940   0.67000   0.01684
FeM1   0.66667   0.33333   0.10940   0.22000   0.01684
ZnM1   0.66667   0.33333   0.10940   0.11000   0.01684
CuM2   0.00000   0.00000   0.35570   0.67000   0.01051
FeM2   0.00000   0.00000   0.35570   0.22000   0.01051
ZnM2   0.00000   0.00000   0.35570   0.11000   0.01051
S1   0.00000   0.00000   0.00000   1.00000   0.00633
S2   0.66667   0.33333   0.46290   1.00000   0.01418
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Na 0.00887 0.00887 0.00405 0.00443 0.00000 0.00000
CuM1 0.01684 0.01684 0.02077 0.00842 0.00000 0.00000
FeM1 0.01684 0.01684 0.02077 0.00842 0.00000 0.00000
ZnM1 0.01684 0.01684 0.02077 0.00842 0.00000 0.00000
CuM2 0.01051 0.01051 0.01254 0.00526 0.00000 0.00000
FeM2 0.01051 0.01051 0.01254 0.00526 0.00000 0.00000
ZnM2 0.01051 0.01051 0.01254 0.00526 0.00000 0.00000
S1 0.00633 0.00633 0.00659 0.00317 0.00000 0.00000
S2 0.01507 0.01507 0.01672 0.00754 0.00000 0.00000

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
6.85 Å	(60)
3.40 Å	(90)
3.02 Å	(100)
2.40 Å	(100)
1.945 Å	(100)
1.870 Å	(90)

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 ChvilevaiteHide

Type Locality:

ⓘ Akatui Pb-Zn deposit, Akatui, Alexandrovo-Zavodsky District, Zabaykalsky Krai, Russia

General Appearance of Type Material:

In sphalerite. Individual grains up to 0.5 mm of tabular, prismatic, and equant habit; also as intergrowths with covellite and chalcocite.

Place of Conservation of Type Material:

Fersman Mineralogical Museum, Moscow, Russia.

Geological Setting of Type Material:

Hydrothermal veins

Associated Minerals at Type Locality:

Sphalerite	Quartz	Pyrite	Galena	Covellite
Chalcocite	Boulangerite	Arsenopyrite

Reference:

Download:

https://rruff.info/rruff_1.0/uploads/ZVMO117N2_204.pdf

Synonyms of ChvilevaiteHide

IMA1987-017

Other Language Names for ChvilevaiteHide

German:Chvilevait

Russian:Чвилеваит

Spanish:Chvilevaita

Related Minerals - Strunz-mindat Grouping Hide

2.FB.05	Caswellsilverite	NaCrS₂	Trig. 3m (3 2/m) : R3m
2.FB.05	Schöllhornite	Na_0.3CrS₂ · H₂O	Trig.
2.FB.05	Cronusite	Ca_0.2CrS₂ · 2 H₂O	Trig. 3m : R3m
2.FB.15	Orickite	2CuFeS₂ · H₂O	Hex.
2.FB.20	Rasvumite	KFe₂S₃	Orth. mmm (2/m 2/m 2/m) : Cmcm
2.FB.20	Pautovite	CsFe₂S₃	Orth. mmm (2/m 2/m 2/m) : Cmcm
2.FB.25	Colimaite	K₃VS₄	Orth. mmm (2/m 2/m 2/m) : Pnma

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 ChvilevaiteHide

mindat.org URL:

https://www.mindat.org/min-1050.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 ChvilevaiteHide

Reference List:

Jambor, John L., Vanko, David A. (1989) New mineral names. American Mineralogist, 74 (7-8) 946-951

Kaplunnik, L.N., Petrova, I.V., Pobedimskaya, E.A., Kachalovskaya, V.M., Osipov, B.S. (1990) Crystal structure of the natural alkaline sulfide chvilevaite Na(Cu,Fe,Zn)2S2. Doklady Akademii Nauk SSSR: 310: 90-93.

Kaplunnik, L.N., Petrova, I.V., Pobedimskaya, E.A., Kachalovskaya, V.M., Osipov, B.S. (1990) Crystal structure of natural alkaline sulfide, chvilevaite, Na(Cu,Fe,Zn)2S2. Soviet Physics - Doklady: 35: 6-8.

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

Localities for ChvilevaiteHide

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)

Zabaykalsky Krai

Alexandrovo-Zavodsky District

Akatui

ⓘ Akatui Pb-Zn deposit (TL)

Kachalovskaya et al. (1988) +1 other reference

Chvilevaite