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Quadratite

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Formula:
Ag(Cd,Pb)AsS3
Colour:
Gray; reddish (laminae)
Lustre:
Metallic
Hardness:
3
Crystal System:
Tetragonal
Name:
The name is derived from the conspicuous quadratic shape of the mineral.
The Cd analogue of manganoquadratite.


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Classification of QuadratiteHide

Approved
2.GC.25

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

Physical Properties of QuadratiteHide

Metallic
Transparency:
Translucent, Opaque
Colour:
Gray; reddish (laminae)
Streak:
Reddish-brown
Hardness:

Chemical Properties of QuadratiteHide

Formula:
Ag(Cd,Pb)AsS3

Crystallography of QuadratiteHide

Crystal System:
Tetragonal

Type Occurrence of QuadratiteHide

Synonyms of QuadratiteHide

Other Language Names for QuadratiteHide

German:Quadratit
Spanish:Quadratita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Smithite9 photos of Quadratite associated with Smithite on mindat.org.
Jordanite7 photos of Quadratite associated with Jordanite on mindat.org.
Greenockite2 photos of Quadratite associated with Greenockite on mindat.org.
Galena1 photo of Quadratite associated with Galena on mindat.org.
Seligmannite1 photo of Quadratite associated with Seligmannite on mindat.org.
Marrite1 photo of Quadratite associated with Marrite on mindat.org.
Wurtzite1 photo of Quadratite associated with Wurtzite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.GC.05HatchiteAgTlPbAs2S5Tric. 1 : P1
2.GC.05Wallisite(Cu,Ag)TlPbAs2S5Tric.
2.GC.10SinneriteCu6As4S9Tric. 1 : P1
2.GC.15WatanabeiteCu4(As,Sb)2S5Orth.
2.GC.20SimoniteTlHgAs3S6Mon. 2/m
2.GC.25ManganoquadratiteAgMnAsS3Tet. 4 2 2 : P43 2 2
2.GC.30SmithiteAgAsS2Mon. 2/m
2.GC.35TrechmanniteAgAsS2Trig.
2.GC.40aAleksitePbBi2Te2S2Trig.
2.GC.40bKochkaritePbBi4Te7Trig.
2.GC.40cPoubaitePbBi2(Se,Te,S)4Trig.
2.GC.40cRucklidgeitePbBi2Te4Trig.
2.GC.40eBabkinitePb2Bi2(S,Se)3Trig.
2.GC.40dSaddlebackitePb2Bi2Te2S3Hex.
2.GC.45TvalchrelidzeiteHg3SbAsS3Mon. 2/m
2.GC.50MutnovskitePb4As2S6IClOrth. mmm (2/m 2/m 2/m) : Pnma

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 QuadratiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Graeser, S., Lustenhouwer, W., Berlepsch, P. (1998): Quadratite Ag(Cd,Pb)(As,Sb)S3 - a new sulfide mineral from Lengenbach, Binntal (Switzerland). Schweizerische Mineralogische und Petrographische Mitteilungen 78, 489-494.
Bindi, L., Spry, P. G., Bonazzi, P., Makovicky, E., Balić-Žunić, T. (2013): Quadratite, AgCdAsS3:Chemical composition, crystal structure and OD character. American Mineralogist 98, 242-247.

Internet Links for QuadratiteHide

Localities for QuadratiteHide

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)
[AmMin 85:264]
Mineral and/or Locality  
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