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Stalderite

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Hans-Anton Stalder
Formula:
TlCu(Zn,Fe,Hg)2As2S6
System:
Tetragonal
Colour:
Black with a blue and ...
Lustre:
Metallic
Hardness:
3½ - 4
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.


Classification of Stalderite

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 Stalderite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Black with a blue and red iridescence
Streak:
Brown-red
Hardness (Mohs):
3½ - 4

Chemical Properties of Stalderite

IMA Formula:
TlCu(Zn,Fe,Hg)2As2S6
Elements listed in formula:

Crystallography of Stalderite

Crystal System:
Tetragonal

Type Occurrence of Stalderite

Relationship of Stalderite to other Species

Other Members of Group:
ArsiccioiteAgHg2Tl(As,Sb)2S6
FerrostalderiteCuFe2TlAs2S6
RalphcannoniteAgZn2TlAs2S6
RouthieriteTl(Cu,Ag)(Hg,Zn)2(As,Sb)2S6
2.GA.05ProustiteAg3AsS3
2.GA.05PyrargyriteAg3SbS3
2.GA.10PyrostilpniteAg3SbS3
2.GA.10XanthoconiteAg3AsS3
2.GA.15SamsoniteAg4MnSb2S6
2.GA.20SkinneriteCu3SbS3
2.GA.20WitticheniteCu3BiS3
2.GA.25LapieiteCuNiSbS3
2.GA.25MückeiteCuNiBiS3
2.GA.25MalyshevitePdCuBiS3
2.GA.25LisiguangiteCuPtBiS3
2.GA.30AktashiteCu6Hg3As4S12
2.GA.30GruzdeviteCu6Hg3Sb4S12
2.GA.30NowackiiteCu6Zn3As4S12
2.GA.35LaffittiteAgHgAsS3
2.GA.40RouthieriteCuTlHg2As2S6
2.GA.45ErniggliiteTl2SnAs2S6
2.GA.50BournoniteCuPbSbS3
2.GA.50SeligmanniteCuPbAsS3
2.GA.50SoučekiteCuPbBi(S,Se)3

Other Names for Stalderite

Name in Other Languages:
German:Stalderit
Simplified Chinese:斜硫砷铜汞矿
Spanish:Stalderita

Other Information

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 Stalderite

Reference List:
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 Stalderite

mindat.org URL:
https://www.mindat.org/min-3744.html
Please feel free to link to this page.

Localities for Stalderite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
 
  • Wallis (Valais)
    • Binn Valley
      • Fäld (Imfeld; Im Feld; Feld)
Schweiz.Min.Petr.Mitt.(1995) 75
Mineral and/or Locality  
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