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Gortdrumite

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About GortdrumiteHide

Formula:
Cu24Fe2Hg9S23
Originally assumed to be Cu18FeHg6S16.
Colour:
Blackish lead-gray
Lustre:
Metallic
Hardness:
3½ - 4
Specific Gravity:
6.80 (Calculated)
Crystal System:
Triclinic
Name:
Named for the type locality of Gortdrum mine, Ireland.
This page provides mineralogical data about Gortdrumite.


Classification of GortdrumiteHide

Approved
2.BD.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
D : With Hg, Tl
2.16.14.1

2 : SULFIDES
16 : Miscellaneous
3.5.9

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
5 : Sulphides etc. of Hg and Tl

Pronounciation of GortdrumiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of GortdrumiteHide

Metallic
Transparency:
Opaque
Colour:
Blackish lead-gray
Hardness:
3½ - 4 on Mohs scale
Hardness:
VHN10=186 - 230 kg/mm2 - Vickers
Density:
6.80 g/cm3 (Calculated)

Optical Data of GortdrumiteHide

Type:
Anisotropic
Anisotropism:
Strong - colors from gratish white with bluish tint to blue

Chemical Properties of GortdrumiteHide

Formula:
Cu24Fe2Hg9S23

Originally assumed to be Cu18FeHg6S16.
IMA Formula:
Cu18FeHg6S16

Crystallography of GortdrumiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 9.677(4) Å, b = 9.865(5) Å, c = 11.992(5) Å
α = 77.85(3)°, β = 79.42(4)°, γ = 76.30(8)°
Ratio:
a:b:c = 0.981 : 1 : 1.216
Unit Cell V:
1076.5 ų
Z:
1
Morphology:
Anhedral grains to 200 microns.
Twinning:
Fine lamellar
Comment:
Originally assumed to be orthorhombic, with a = 14.96, b = 7.90, c = 24.1 Å.

Type Occurrence of GortdrumiteHide

Place of Conservation of Type Material:
British Museum of Natural History
Geological Setting of Type Material:
Sulfide veins cutting dolomites
Associated Minerals at Type Locality:

Synonyms of GortdrumiteHide

Other Language Names for GortdrumiteHide

German:Gortdrumit
Spanish:Gortdrumita

Common AssociatesHide

Associated Minerals Based on Photo Data:
Tennantite2 photos of Gortdrumite associated with Tennantite on mindat.org.
Dolomite1 photo of Gortdrumite associated with Dolomite on mindat.org.
Calcite1 photo of Gortdrumite associated with Calcite on mindat.org.
Cinnabar1 photo of Gortdrumite associated with Cinnabar on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

2.BD.UM2004-33-S:AgCuHgSe(Ag,Cu)8Hg3(S,Se)7
2.BD.05ImiteriteAg2HgS2Mon.
2.BD.15BalkaniteCu9Ag5HgS8Mon. 2/m : P2/m
2.BD.15Danielsite(Cu,Ag)14HgS8Orth.
2.BD.20DonharrisiteNi3HgS3Mon. 2/m : B2/m
2.BD.25CarliniteTl2STrig. 3 : R3
2.BD.30BukoviteTl2(Cu,Fe)4Se4Tet.
2.BD.30MurunskiteK2(Cu,Fe)4S4Tet.
2.BD.30ThalcusiteTl2Cu3FeS4Tet.
2.BD.35Rohaite(Tl,Pb,K)2Cu8.7Sb2S4Orth.
2.BD.40ChalcothalliteTl2(Cu,Fe)6SbS4Tet. 4/mmm (4/m 2/m 2/m) : I4/mmm
2.BD.45SabatieriteCu6TlSe4Orth.
2.BD.50CrookesiteCu7(Tl, Ag)Se4Tet.
2.BD.55BrodtkorbiteCu2HgSe2Mon. 2/m : P21/m

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.5.1CinnabarHgSTrig. 3 2 : P31 2 1
3.5.2HypercinnabarHgSHex.
3.5.3MetacinnabarHgSIso. 4 3m : F4 3m
3.5.4ImiteriteAg2HgS2Mon.
3.5.5TiemanniteHgSeIso. 4 3m : F4 3m
3.5.6BalkaniteCu9Ag5HgS8Mon. 2/m : P2/m
3.5.7Danielsite(Cu,Ag)14HgS8Orth.
3.5.8ColoradoiteHgTeIso. m3m (4/m 3 2/m)
3.5.10Polhemusite(Zn,Hg)STet.
3.5.11CarliniteTl2STrig. 3 : R3
3.5.12CrookesiteCu7(Tl, Ag)Se4Tet.
3.5.13SabatieriteCu6TlSe4Orth.
3.5.14PicotpauliteTlFe2S3Orth. mmm (2/m 2/m 2/m) : Cmcm
3.5.15RaguiniteTlFeS2Orth.
3.5.16ThalcusiteTl2Cu3FeS4Tet.
3.5.17BukoviteTl2(Cu,Fe)4Se4Tet.
3.5.18GalliteCuGaS2Tet. 4 2m : I4 2d
3.5.19RoquesiteCuInS2Tet. 4 2m : I4 2d
3.5.20InditeFeIn2S4Iso. m3m (4/m 3 2/m) : Fd3m

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 GortdrumiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Steed, G.M. (1983) Gortdrumite, a new sulphide mineral containing copper and mercury, from Ireland. Mineralogical Magazine: 47: 35-36.
Dunn, P.J., Cabri, L.J., Chao, G.Y., Fleischer, M., Francis, C.A., Grice, J.D., Jambor, J.L., Pabst, A. (1984) New mineral names. American Mineralogist: 69: 406-412.
Bindi, L., Paar, W.H., Leblhuber, P. (2018): Gortdrumite, Cu24Fe2Hg9S23, from Leogang, Salzburg, Austria: Crystal structure and revision of the chemical formula. Mineral. Mag. (prepublication)

Internet Links for GortdrumiteHide

Localities for GortdrumiteHide

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.
Austria
 
  • Salzburg
    • Saalfelden
      • Leogang
        • Hütten
          • Schwarzleograben
            • Schwarzleo District
Leblhuber, P. (2000): Lagerstättenkundliche Untersuchungen im Grubenrevier Schwarzleo-Mitte, Leogang, Salzburg. Unpubl. Diploma Thesis, University of Salzburg, xx pp.; Bindi, L., Paar, W.H., Leblhuber, P. (2018): Gortdrumite, Cu24Fe2Hg9S23, from Leogang, Salzburg, Austria: Crystal structure and revision of the chemical formula. Mineral. Mag. (prepublication)
Germany
 
  • Rhineland-Palatinate
    • Palatinate
      • Alsenz-Obermoschel
        • Obermoschel
Frank Keutsch analysis (WDS)
Ireland (TL)
 
  • Co. Tipperary
    • Monard
Mineralogical Magazine(1983) 47, 35-36.; Ryback, G., Nawaz, R. and Farley, E. (1988) Seventh Supplementary List of British Isles Minerals (Irish). Mineralogical Magazine, vol. 52, n° 365, pp.
USA
 
  • Nevada
    • Eureka Co.
      • Lynn District
NBMG Spec. Pub. 31 Minerals of Nevada
Mineral and/or Locality  
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