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Oldhamite

Formula:
(Ca,Mg)S
System:IsometricColour:pale brown to dark brown
Hardness:4
Name:Named after T. Oldham (1816-1878), Director of the Indian Geological Survey (1850-1876).

Classification of Oldhamite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/C.15-20
Nickel-Strunz 10th (pending) edition ID:2.CD.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
D : With Sn, Pb, Hg, etc.
Hey's CIM Ref.:3.4.2

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
4 : Sulphides etc. of Group II metals other than Hg (Mg, Ca, Zn, Cd)
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Type Occurrence of Oldhamite

Type Locality:The Bustee meteorite, Gorakhpur, Basti District, Basti Division, Uttar Pradesh, India
Year of Discovery:1862

Physical Properties of Oldhamite

Colour:pale brown to dark brown
Hardness (Mohs):4
Cleavage:Distinct/Good

Crystallography of Oldhamite

Crystal System:Isometric
Cell Parameters:a = 5.69Å
Unit Cell Volume:V 184.22 ų (Calculated from Unit Cell)

Chemical Properties of Oldhamite

Formula:
(Ca,Mg)S
Essential elements:Ca, S
All elements listed in formula:Ca, Mg, S
Common Impurities:Mg,Na,Fe,Cu

Relationship of Oldhamite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.CD.05Herzenbergite
(Sn,Pb)SnS
 
2
2.CD.05Teallite
(Pb,Sn)SnS
 
2
2.CD.10Alabandite
Mn
2+
 
S
2.CD.10Altaite
PbTe
2.CD.10Clausthalite
PbSe
2.CD.10Galena
PbS
2.CD.10Niningerite
(Mg,Fe
2+
 
,Mn
2+
 
)S
2.CD.10Keilite
(Fe
2+
 
,Mg)S
2.CD.15aCinnabar
HgS
2.CD.15bHypercinnabar
HgS
Related Minerals - Hey's Index Grouping:

- +
3.4.1Niningerite
(Mg,Fe
2+
 
,Mn
2+
 
)S
3.4.3Mátraite
ZnS
3.4.4Sphalerite
(Zn,Fe
2+
 
)S
3.4.5Wurtzite
(Zn,Fe)S
3.4.6Stilleite
ZnSe
3.4.7Greenockite
CdS
3.4.8Hawleyite
CdS
3.4.9Cadmoselite
CdSe

Other Names for Oldhamite

Other Languages:
German:Oldhamit
Russian:Ольдгамит
Spanish:Oldhamita

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 Oldhamite

Reference List:Maskelyne (1862), Phil. Trans. (1870): 160: 195.

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, 834pp.: 208-209.

Mineralogical Magazine: 37: 144-145.

Lapis (1998): 23: 7-8, 32.

Internet Links for Oldhamite

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    Localities for Oldhamite

    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.
    Antarctica
     
    • Eastern Antarctica
      • Victoria Land
        • Allan Hills
    bersite, troilite, daubreelite, and djerfisherite
    Azerbaijan
     
    • Naxçıvan (Naxcivan; Nakhichevan) District
      • Shusha
    http://rruff.geo.arizona.edu/doclib/hom/roedderite.pdf.; American Mineralogist, Volume 93, pages 902–909, 2008
    Canada
     
    • Alberta
      • Abee
    Estonia
     
    • Viljandi Co.
      • Vohma
        • Pillistfer
    France
     
    • Midi-Pyrénées
      • Aveyron
    Eytier J.R. & Ch., Favreau G., Devouard B., Vigier J. (2004), Minéraux de pyrométamorphisme de Lapanouse-de Sévérac (Aveyron), Cahier des Micromonteurs, n°3, pp: 3-58
    Germany
     
    • Bavaria
      • Swabia
        • Allgäu
          • Füssen
    G. Simon et al. : "The Meteorite Neuschwanstein", 5th International Conference "Mineralogy & Museums", Paris, Sept. 5-8th 2004, Bull. de Liaison de la Soc. Franç. de Minéralogie et Cristallographie, 2004, Vol 16, N°2.
    • Thuringia
      • Gera
        • Ronneburg U deposit
    T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
    India
     
    • Uttar Pradesh
      • Basti Division
        • Basti District
          • Gorakhpur
    Min Mag 37 (1969), 144
    Poland
     
    • Lubelskie
      • Zamosc
    The Meteoritical Bulletin, No. 84, (August, 2000)
    • Upper Silesia (Śląskie)
      • Upper Silesian Coal Basin
        • Katowice area
          • Siemianowice Śląskie
    Kruszewski L. 2006: Oldhamite-periclase-portlandite-fluorite assemblage and coexisting minerals of burnt dump in Siemianowice Śląskie - Dąbrówka Wielka area (Upper Silesia, Poland) - preliminary report. Mineralogia Polonica Special Papers, vol.28, 118-120
    Russia
     
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Chelyabinsk coal basin
            • Korkino
    Am Min 90:1556-1562; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
          • Magnitka
    Sudan
     
    • Kassala
      • Gash delta
    Hey, M. H. & Easton, A. J. in Geochimica et Cosmochimica Acta 31(10):1789-1790 (1967)
    USA
     
    • Kansas
      • Norton Co.
    Lunar and Planetary Science XXXII (2001)
    • Texas
      • Lubbock Co.
    Meteoritics (ISSN 0026-1114), vol. 24, Dec. 1989, p. 195-208.; Geochimica et Cosmochimica Acta (1989), 53(12), 3291-307
    Western Sahara
     
    • Saguia el Hamra
    Patzer, A. et al. (2001) Meteoritics and Planetary Science 36, 1495-1505
    Yemen
     
    • South Yemen
    Meteoritics & Planetary Science 39,53-60(2004); Zolensky, M. & A.Ivanov, Chemie der Erde 63,185-246(2003)
    Mineral and/or Locality
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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: 7th Nov 2009 04:16:07