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Smithite

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Formula:
AgAsS2
Colour:
Pale red; red-orange or brownish orange on exposure to light
Lustre:
Adamantine
Hardness:
1½ - 2
Specific Gravity:
4.88
Crystal System:
Monoclinic
Name:
Named after George Frederick Herbert Smith (1872-1953), crystallographer, British Museum of Natural History, London (England).
Dimorph of:
This page provides mineralogical data about Smithite.


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Classification of SmithiteHide

Approved, 'Grandfathered' (first described prior to 1959)
2.GC.30

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
C : Poly-sulfarsenites
3.7.3.1

3 : SULFOSALTS
7 : ø = 2
5.2.1

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
2 : Sulpharsenites etc. of Ag

Physical Properties of SmithiteHide

Adamantine
Transparency:
Opaque
Colour:
Pale red; red-orange or brownish orange on exposure to light
Streak:
Vermillion
Hardness:
1½ - 2 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{100} perfect
Fracture:
Conchoidal
Density:
4.88 g/cm3 (Measured)    

Optical Data of SmithiteHide

Type:
Biaxial (-)
Dispersion:
marked to extreme

Chemical Properties of SmithiteHide

Formula:
AgAsS2
Common Impurities:
Sb

Crystallography of SmithiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 17.23 Å, b = 7.78 Å, c = 15.19 Å
β = 101.2°
Ratio:
a:b:c = 2.215 : 1 : 1.952
Unit Cell V:
1,997.43 ų (Calculated from Unit Cell)
Morphology:
Equant; tabular {100}. Tabular crystals appear hexagonal due to strong zonal developments nearly 60° apart.

Crystallographic forms of SmithiteHide

Crystal Atlas:
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Smithite - {100}, {101}, {001}, modified
3d models and HTML5 code kindly provided by www.smorf.nl.

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Type Occurrence of SmithiteHide

Synonyms of SmithiteHide

Other Language Names for SmithiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Quadratite9 photos of Smithite associated with Quadratite on mindat.org.
Wakabayashilite6 photos of Smithite associated with Wakabayashilite on mindat.org.
Argyrodite3 photos of Smithite associated with Argyrodite on mindat.org.
Freibergite3 photos of Smithite associated with Freibergite on mindat.org.
Rathite2 photos of Smithite associated with Rathite on mindat.org.
Pierrotite2 photos of Smithite associated with Pierrotite on mindat.org.
Hutchinsonite1 photo of Smithite associated with Hutchinsonite on mindat.org.
Imhofite1 photo of Smithite associated with Imhofite on mindat.org.
Routhierite1 photo of Smithite associated with Routhierite on mindat.org.
Lengenbachite1 photo of Smithite associated with Lengenbachite 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.25QuadratiteAg(Cd,Pb)AsS3Tet.
2.GC.25ManganoquadratiteAgMnAsS3Tet. 4 2 2 : P43 2 2
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

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

3.7.3.2MiargyriteAgSbS2Mon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

5.2.2TrechmanniteAgAsS2Trig.
5.2.3ProustiteAg3AsS3Trig. 3m (3 2/m) : R3c
5.2.4XanthoconiteAg3AsS3Mon. 2/m : B2/b
5.2.5Pearceite[Ag9CuS4][(Ag,Cu)6(As,Sb)2S7]Trig. 3m (3 2/m) : P3m1
5.2.6Pearceite-T2acTrig. 3 2 : P3 2 1
5.2.7ArgentotennantiteAg6[Cu4(Fe,Zn)2]As4S13Iso. 4 3m : I4 3m
5.2.8MiargyriteAgSbS2Mon. 2/m : B2/b
5.2.9PyrargyriteAg3SbS3Trig. 3m : R3c
5.2.10PyrostilpniteAg3SbS3Mon.
5.2.11StephaniteAg5SbS4Orth. mm2 : Cmc21
5.2.12Polybasite[(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]Mon. 2/m : B2/m
5.2.13BillingsleyiteAg7AsS6Iso. 2 3 : P21 3
5.2.14Polybasite-TacTrig. 3m (3 2/m) : P3m1
5.2.15FreibergiteAg6[Cu4Fe2]Sb4S13-xIso. 4 3m : I4 3m
5.2.16AramayoiteAg3Sb2(Bi,Sb)S6Tric. 1 : P1
5.2.17MatilditeAgBiS2Hex.
5.2.18SchapbachiteAg0.4Pb0.2Bi0.4SIso.
5.2.19PavoniteAgBi3S5Mon. 2/m : B2/m
5.2.20ArcubisiteAg6CuBiS4
5.2.21BohdanowicziteAgBiSe2Trig. 3m (3 2/m) : P3m1
5.2.22SelenostephaniteAg5Sb(Se,S)4Orth.
5.2.23Benleonardite[Ag6(Sb,As)2S6Te] [Ag9Cu(S,Te)2Te2]Trig. 3m (3 2/m) : P3m1
5.2.24VolynskiteAgBiTe2Orth.

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 SmithiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Solly (1905) Mineralogical Magazine: 14: 72-82.
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 430-432.
Geological Society of America Memoir 85 (1962): 142.
Naturwissenschaften (1964): 51: 35.

Internet Links for SmithiteHide

Localities for SmithiteHide

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.
Chile
 
  • Atacama Region
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga district
          • Alacrán
maurizio dini
France
 
  • Provence-Alpes-Côte d'Azur
    • Hautes-Alpes
      • La Chapelle-en-Valgaudemar (La Chapelle-en-Valgaudémar)
American Mineralogist, Volume 68, pages 235-244, 1983; Johan, Z. & Mantienne, J. (2000): Thallium-rich mineralization at Jas Roux, Hautes-Alpes, France: a complex epithermal, sediment-hosted, ore-forming system. J. Czech Geol. Soc. 45, 63-77.
Germany
 
  • Baden-Württemberg
    • Wiesloch
Weiss: "Mineralfundstellen, Deutschland West", 1990
  • Hesse
    • Odenwald
      • Mühltal
        • Nieder-Beerbach
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
Iran
 
  • West Azarbaijan Province (West Azerbaijan Province)
    • Sardasht County
      • Sardasht
Topa, D., Makovicky, E., Tajedin, H., Putz, H., Zagler, G. (2013): Barikaite, Pb10Ag3(Sb8As11)S19S40, a new member of the sartorite homologous series. Mineralogical Magazine, 77, 3039-3046.
Ireland
 
  • Co. Tipperary
    • Silvermines District
Gasparrini, C. (1978) unpubl. report, Minmet Scientific, Toronto, Canada; Taylor, S. and Andrew, C.J. (1979) Trans. Inst. Mining Metall., sect. B, 88, 125.; Economic Geology (1984) 79, 529-548.; Andrew, C.J. (1987) pers. comm.; Ryback, G., Nawaz, R. and Farley, E. (1988) Seventh Supplementary List of British Isles Minerals (Irish). Mineralogical Magazine, vol. 52, n° 365, pp. 267-274.;
Japan
 
  • Honshu Island
    • Kanto Region
      • Tochigi Prefecture
        • Nikko City
          • Kuriyamamura
Shimizu, M., Matsubara, S., Shimizu, M., Kyouno, Y., Harada, A., & Cook, N. J. (2007). High-grade Ag–Cu–Sn–In mineralization in the Nishizawa-Ashio area, Tochigi Prefecture, central Japan. Geochim. Cosmochim. Acta, 71(suppl 1).
Poland
 
  • Podlaskie
    • Suwałki District
      • Suwałki Massif
Kucha H. 1982: Haycockite and mooihoekite from titanomagnetite ore, Krzemianka, Poland. Mineralogia Polonica, vol. 13, no 2, 27-32.
Switzerland
 
  • Wallis (Valais)
    • Binn Valley
      • Binn
Cannon, R., Hensel, H. & Raber, T. (2008): Der Reckibach-Dolomit im Binntal, Schweiz: Mineralbestand und Neufunde. Lapis, 33 (3), 20-28; 50. (in German)
      • Fäld (Imfeld; Im Feld; Feld)
Mineralogical Magazine(1905) 14, 72-82 (p. 74)
Mineral and/or Locality  
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