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Watanabeite

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Formula:
Cu
 
4
(As,Sb)
 
2
S
 
5
System:OrthorhombicColour:Silver-grey, lead-grey
Hardness:4 - 4½
Name:Named after Takeo Watanabe (1907-1986), professor of mineralogy, University of Tokyo (1944-1968), Nagoya University (1968-1971), President of the Akita University (1971-1976).


Structurally related to tennantite.

Classification of Watanabeite

IMA status:Approved 1991
Strunz 8th edition ID:2/C.12-05
Nickel-Strunz 10th (pending) edition ID:2.GC.15

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
C : Poly-sulfarsenites
Dana 8th edition ID:3.5.15.1

3 : SULFOSALTS
5 : 2.5 < ø < 3
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Type Occurrence of Watanabeite

Type Locality:Teine mine, Sapporo, Hokkaido, Japan
Year of Discovery:1993

Physical Properties of Watanabeite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Silver-grey, lead-grey
Streak:Lead-grey
Hardness (Mohs):4 - 4½
Cleavage:None Observed

Crystallography of Watanabeite

Crystal System:Orthorhombic
Cell Parameters:a = 14.51Å, b = 13.3Å, c = 17.96Å
Ratio:a:b:c = 1.091 : 1 : 1.35
Unit Cell Volume:V 3,465.97 ų (Calculated from Unit Cell)

Chemical Properties of Watanabeite

Formula:
Cu
 
4
(As,Sb)
 
2
S
 
5
Essential elements:As, Cu, S
All elements listed in formula:As, Cu, S, Sb

Relationship of Watanabeite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.GC.05Hatchite
AgTlPbAs
 
2
S
 
5
2.GC.05Wallisite
(Cu,Ag)TlPbAs
 
2
S
 
5
2.GC.10Sinnerite
Cu
 
6
As
 
4
S
 
9
2.GC.20Simonite
TlHgAs
 
3
S
 
6
2.GC.25Quadratite
Ag(Cd,Pb)AsS
 
3
2.GC.30Smithite
AgAsS
 
2
2.GC.35Trechmannite
AgAsS
 
2
2.GC.40aAleksite
PbBi
 
2
Te
 
2
S
 
2
2.GC.40bKochkarite
PbBi
 
4
Te
 
7
2.GC.40cPoubaite
PbBi
 
2
(Se,Te,S)
 
4
2.GC.40cRucklidgeite
(Bi,Pb)
 
3
Te
 
4
2.GC.40eBabkinite
Pb
 
2
Bi
 
2
(S,Se)
 
3
2.GC.40dSaddlebackite
Pb
 
2
Bi
 
2
Te
 
2
S
 
3
2.GC.45Tvalchrelidzeite
Hg
 
3
SbAsS
 
3
2.GC.50Mutnovskite
Pb
 
4
As
 
2
S
 
6
ICl

Other Names for Watanabeite

Synonyms:
IMA1991-025
Other Languages:
German:Watanabeit
Spanish:Watanabeita

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 Watanabeite

Reference List:

- +
Mineralogical Magazine (1993): 57: 643-649.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for Watanabeite

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

    The 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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    (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.
    Argentina
     
    • Catamarca
      • Andalgalá Department
        • Cerro Atajo
    		MARQUEZ-ZAVALIA, M. F. and GALLISKI, M. A.. Chatkalita, nekrasovita y otros minerales del grupo de la estannita de veta María Eugenia, Cerro Atajo, Catamarca. Rev. Asoc. Geol. Argent. [online]. 2007, vol.62, n.2, pp. 289-298.
    Japan
     
    • Hokkaido
      • Sapporo
    		Min.Mag.: 57:643-649.
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