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Stalderite

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Hans-Anton Stalder
Formula:
Tl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6
Colour:
Black with a blue and red iridescence
Lustre:
Metallic
Hardness:
3½ - 4
Crystal System:
Tetragonal
Name:
Named after Hans-Anton Stalder (1925-2011), curator, Natural History Museum, Bern and professor of mineralogy, University of Bern (Switzerland).
Isostructural with:
The zinc analogue of routhierite and ferrostalderite.


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Classification of StalderiteHide

Approved
Approval Year:
1987
2.GA.40

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
A : Neso-sulfarsenites, etc. without additional S
3.4.11.2

3 : SULFOSALTS
4 : ø = 3

Physical Properties of StalderiteHide

Metallic
Transparency:
Opaque
Colour:
Black with a blue and red iridescence
Streak:
Brown-red
Hardness:
3½ - 4 on Mohs scale

Chemical Properties of StalderiteHide

Formula:
Tl(Cu,Ag)(Zn,Fe,Hg)2(As,Sb)2S6
IMA Formula:
TlCu(Zn,Fe,Hg)2As2S6

Crystallography of StalderiteHide

Crystal System:
Tetragonal

Type Occurrence of StalderiteHide

Synonyms of StalderiteHide

Other Language Names for StalderiteHide

German:Stalderit
Simplified Chinese:斜硫砷铜汞矿
Spanish:Stalderita

Relationship of Stalderite to other SpeciesHide

Other Members of this group:
ArsiccioiteAgHg2Tl(As,Sb)2S6Tet. 4 2m : I4 2m
FerrostalderiteCuFe2TlAs2S6Tet. 4 2m : I4 2m
RalphcannoniteAgZn2TlAs2S6Tet. 4 2m : I4 2m
RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6Tet. 4 2m : I4 2m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Realgar1 photo of Stalderite associated with Realgar on mindat.org.
Dolomite1 photo of Stalderite associated with Dolomite on mindat.org.
Tennantite1 photo of Stalderite associated with Tennantite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.GA.05ProustiteAg3AsS3Trig. 3m (3 2/m) : R3c
2.GA.05PyrargyriteAg3SbS3Trig. 3m : R3c
2.GA.10PyrostilpniteAg3SbS3Mon.
2.GA.10XanthoconiteAg3AsS3Mon. 2/m : B2/b
2.GA.15SamsoniteAg4MnSb2S6Mon. 2/m : P21/m
2.GA.20SkinneriteCu3SbS3Mon. 2/m : P21/b
2.GA.20WitticheniteCu3BiS3Orth. 2 2 2 : P21 21 21
2.GA.25LapieiteNiCuSbS3Orth.
2.GA.25MückeiteNiCu(Bi,Sb)S3Orth. 2 2 2 : P21 21 21
2.GA.25MalyshevitePdCuBiS3Orth. mmm (2/m 2/m 2/m) : Pmmm
2.GA.25LisiguangitePtCuBiS3Orth. 2 2 2 : P21 21 21
2.GA.30AktashiteCu6Hg3As4S12Trig. 3 : R3
2.GA.30GruzdeviteCu6Hg3Sb4S12Trig.
2.GA.30NowackiiteCu6Zn3As4S12Trig. 3 : R3
2.GA.35LaffittiteAgHgAsS3Mon.
2.GA.40RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6Tet. 4 2m : I4 2m
2.GA.45ErniggliiteTl2SnAs2S6Trig.
2.GA.50BournonitePbCuSbS3Orth. mm2 : Pmn21
2.GA.50SeligmannitePbCuAsS3Orth. mmm (2/m 2/m 2/m) : Pmmn
2.GA.50SoučekitePbCuBi(S,Se)3Orth.

Related Minerals - Dana Grouping (8th Ed.)Hide

3.4.11.1RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6Tet. 4 2m : I4 2m

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.

References for StalderiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Graeser, S., Schwander, H., Wulf, R. (1995): Stalderite TlCu(Zn,Fe,Hg)2As2S6 - a new mineral related to routhierite: description and crystal structure determination. Schweizerische mineralogische und petrographische Mitteilungen 75, 337-345.
Mineralogical Record: 27: 466.
American Mineralogist (1996): 81: 1015.

Internet Links for StalderiteHide

Localities for StalderiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Switzerland (TL)
 
  • Wallis (Valais)
    • Binn Valley
      • Fäld (Imfeld; Im Feld; Feld)
Schweiz.Min.Petr.Mitt.(1995) 75
Mineral and/or Locality  
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