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Chvilevaite

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Formula:
Na(Cu,Fe,Zn)
 
2
S
 
4
System:TrigonalColour:Bronze
Lustre:MetallicHardness:3
Name: Named after Tat'iana Nikiforovna Chvileva (1925-), Russian mineralogist.
This page provides mineralogical data about Chvilevaite.

Classification of Chvilevaite

IMA status:Approved
Strunz 8th edition ID:2/F.05-10
Nickel-Strunz 10th (pending) edition ID: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 edition ID:2.5.9.1

2 : SULFIDES
5 : AmBnXp, 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
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Type Occurrence of Chvilevaite

Type Locality:Akatui Pb-Zn deposit, Akatui, Chitinskaya Oblast', Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia
Place of Conservation of Type Material:Fernsman Museum
Year of Discovery:1988
Geological Setting of type material:Hydrothermal veins
Associated Minerals at type locality:
SphaleriteQuartzPyriteGalenaCovellite
ChalcociteBoulangeriteArsenopyrite

Physical Properties of Chvilevaite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Bronze
Comment:Tarnishes sooty black
Hardness (Mohs):3
Hardness (Vickers):VHN20=110 - 153 kg/mm2
Tenacity:Brittle
Cleavage:Perfect
on {0001}
Density (calculated):3.94 g/cm3

Crystallography of Chvilevaite

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 Volume:V 88.96 ų (Calculated from Unit Cell)
Z:1
Morphology:Tabular, prismatic and equant grains to 0.5mm

Optical Data of Chvilevaite

Type:Anisotropic
Anisotropism:Strong from black to white
Colour in reflected light:Orange changing to rosy purple with time
Pleochroism:Visible
Comments:From light orange to dark gray with violet tint.

Chemical Properties of Chvilevaite

Formula:
Na(Cu,Fe,Zn)
 
2
S
 
4
Essential elements:Cu, Na, S
All elements listed in formula:Cu, Fe, Na, S, Zn
Common Impurities:Ca,Mn,As

Relationship of Chvilevaite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.FB.05Caswellsilverite
NaCrS
 
2
2.FB.05Schöllhornite
Na
 
0.3
CrS
 
2
 · H
 
2
O
2.FB.05Cronusite
Ca
 
0.2
CrS
 
2
 · 2 H
 
2
O
2.FB.15Orickite
2CuFeS
 
2
 · H
 
2
O
2.FB.20Rasvumite
KFe
 
2
S
 
3
2.FB.20Pautovite
CsFe
 
2
S
 
3
2.FB.25Colimaite
K
 
3
VS
 
4
Related Minerals - Hey's Index Grouping:

- +
3.0.1Erdite
NaFeS
 
2
 · 2H
 
2
O
3.0.2Coyoteite
NaFe
 
3
S
 
5
 · 2H
 
2
O
3.0.4Rasvumite
KFe
 
2
S
 
3
3.0.5Bartonite
K
 
3
Fe
 
10
S
 
14
3.0.6Murunskite
K
 
2
(Cu,Fe)
 
4
S
 
4

Other Names for Chvilevaite

Synonyms:
IMA1987-017
Other Languages:
German:Chvilevait
Russian:Чвилеваит
Spanish:Chvilevaita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Chvilevaite

Reference List:

- +
American Mineralogist: 74: 946.

Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 117(2): 204-207.

Doklady Akademii Nauk SSSR: 310: 90-93.

Internet Links for Chvilevaite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Chvilevaite details from Handbook of Mineralogy (PDF)
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    • Localities for Chvilevaite

    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Russia
     
    • Eastern-Siberian Region
      • Transbaikalia (Zabaykalye)
        • Chitinskaya Oblast'
          • Akatui
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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