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Sicherite

Formula:
TlAg
 
2
(As,Sb)
 
3
S
 
6
System:OrthorhombicColour:Dark gray, black
Lustre:MetallicHardness:3
Name:After Valentin Sicher, an active member in the syndicate that operates the Lengenbach quarry for scientific studies and specimen production.
This page provides mineralogical data about Sicherite.

Classification of Sicherite

IMA status:Approved 1997
Nickel-Strunz 10th (pending) edition ID:2.HD.55

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
D : With Tl
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Type Occurrence of Sicherite

Type Locality:Lengenbach Quarry, Im Feld (Imfeld; Feld; Fäld), Binn Valley, Wallis (Valais), Switzerland

Physical Properties of Sicherite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Dark gray, black
Streak:Dark brown-red
Hardness (Mohs):3

Crystallography of Sicherite

Crystal System:Orthorhombic

Chemical Properties of Sicherite

Formula:
TlAg
 
2
(As,Sb)
 
3
S
 
6
Essential elements:Ag, As, S, Tl
All elements listed in formula:Ag, As, S, Sb, Tl

Relationship of Sicherite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.HD.05Lorándite
TlAsS
 
2
2.HD.05Weissbergite
TlSbS
 
2
2.HD.15Christite
TlHgAsS
 
3
2.HD.20Jankovićite
Tl
 
5
Sb
 
9
(As,Sb)
 
4
S
 
22
2.HD.20Jankovicite
2.HD.25Rebulite
Tl
 
5
Sb
 
5
As
 
8
S
 
22
2.HD.30Imhofite
Tl
 
6
CuAs
 
16
S
 
40
2.HD.35Edenharterite
PbTlAs
 
3
S
 
6
2.HD.40Jentschite
TlPbAs
 
2
SbS
 
6
2.HD.45Hutchinsonite
(Tl,Pb)
 
2
As
 
5
S
 
9
2.HD.50Bernardite
Tl(As,Sb)
 
5
S
 
8
2.HD.60Gabrielite
Tl
 
6
Ag
 
3
Cu
 
6
(As,Sb)
 
9
S
 
21

Other Names for Sicherite

Synonyms:
IMA1997-051
Other Languages:
German:Sicherit
Russian:Зихерит
Spanish:Sicherita

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 Sicherite

Reference List:American Mineralogist (2001): 86: 1087-1093.

Internet Links for Sicherite

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    Localities for Sicherite

    Hide Locality List
    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.
    (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.
    Switzerland
     
    • Wallis (Valais)
      • Binn Valley
        • Im Feld (Imfeld; Feld; Fäld)
    		Am. Min (2001). 86:1087-1093
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 17th Nov 2009 18:27:53