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Roxbyite

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Formula:
Cu9S5
System:
Monoclinic
Colour:
Blue-black
Hardness:
2½ - 3
Name:
Named after its discovery locality.
Chalcocite-Digenite Group.

A low-temperature alteration product of djurleite.

Classification of Roxbyite

Approved 1986
2.BA.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
A : With Cu, Ag, Au
2.4.7.4

2 : SULFIDES
4 : AmBnXp, with (m+n):p = 2:1
3.1.5

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

Year of Discovery:
1986

Physical Properties of Roxbyite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Blue-black
Hardness (Mohs):
2½ - 3

Crystallography of Roxbyite

Crystal System:
Monoclinic
Cell Parameters:
a = 53.79Å, b = 30.90Å, c = 13.36Å
β = 90.0°
Ratio:
a:b:c = 1.741 : 1 : 0.432
Unit Cell Volume:
V 22,205.80 ų (Calculated from Unit Cell)
Z:
512
Morphology:
As single crystals, to 0.01 mm, epitaxially intergrown with djurleite; in powdery mixtures with djurleite.
Comment:
Space Group C2/m, Cm or C2.
X-Ray Powder Diffraction Data:
d-spacingIntensity
2.86 (70)
2.630 (50)
2.375 (90)
1.933 (100)
1.857 (80)
1.673 (25)
1.626 (20)

Chemical Properties of Roxbyite

Formula:
Cu9S5
Essential elements:
All elements listed in formula:
Common Impurities:
Fe

Relationship of Roxbyite to other Species

Structurally related to group(s):
2.BA.05ChalcociteCu2S
2.BA.05DjurleiteCu31S16
2.BA.05GeeriteCu8S5
2.BA.10AniliteCu7S4
2.BA.10DigeniteCu9S5
2.BA.15BorniteCu5FeS4
2.BA.20BellidoiteCu2Se
2.BA.20BerzelianiteCu2Se
2.BA.25AthabascaiteCu5Se4
2.BA.25UmangiteCu3Se2
2.BA.30RickarditeCu7Te5
2.BA.30WeissiteCu2-xTe
2.BA.35AcanthiteAg2S
2.BA.40MckinstryiteAg5-xCu3+xS4
2.BA.40StromeyeriteAgCuS
2.BA.40dUM2003-13-S:AgAuCuAg6AuCu2S5
2.BA.45JalpaiteAg3CuS2
2.BA.45SelenojalpaiteAg3CuSe2
2.BA.50EucairiteAgCuSe
2.BA.55AguilariteAg4SeS
2.BA.55NaumanniteAg2Se
2.BA.60CervelleiteAg4TeS
2.BA.60HessiteAg2Te
2.BA.60ChenguodaiteAg9Fe3+Te2S4
2.BA.65Henryite(Cu,Ag)3+xTe2 , with x ~ 0.40
2.BA.65StütziteAg5-xTe3, x = 0.24-0.36
2.BA.70ArgyroditeAg8GeS6
2.BA.70CanfielditeAg8SnS6
2.BA.70Putzite(Cu4.7Ag3.3)GeS6
2.BA.75FischesseriteAg3AuSe2
2.BA.75Penzhinite(Ag,Cu)4Au(S,Se)4
2.BA.75PetrovskaiteAuAg(S,Se)
2.BA.75PetziteAg3AuTe2
2.BA.75UytenbogaardtiteAg3AuS2
2.BA.80Bezsmertnovite(Au,Ag)4Cu(Te,Pb)
2.BA.80BilibinskitePbCu2Au3Te2
2.BA.80Bogdanovite(Au,Te,Pb)3(Cu,Fe)
3.1.1ChalcociteCu2S
3.1.2DjurleiteCu31S16
3.1.3DigeniteCu9S5
3.1.4AniliteCu7S4
3.1.6SpionkopiteCu39S28
3.1.7GeeriteCu8S5
3.1.8CovelliteCuS
3.1.9BerzelianiteCu2Se
3.1.10BellidoiteCu2Se
3.1.11UmangiteCu3Se2
3.1.12YarrowiteCu9S8
3.1.13AthabascaiteCu5Se4
3.1.14KlockmanniteCuSe
3.1.15Krut'aiteCuSe2
3.1.16WeissiteCu2-xTe
3.1.17RickarditeCu7Te5
3.1.18VulcaniteCuTe
3.1.19BambollaiteCu(Se,Te)2
3.1.20LautiteCuAsS
3.1.21MgriiteCu3AsSe3
3.1.22CubaniteCuFe2S3
3.1.23BorniteCu5FeS4
3.1.24FukuchiliteCu3FeS8
3.1.25ChalcopyriteCuFeS2
3.1.26MooihoekiteCu9Fe9S16
3.1.27HaycockiteCu4Fe5S8
3.1.28IsocubaniteCuFe2S3
3.1.29IdaiteCu5FeS6
3.1.30NukundamiteCu3.4Fe0.6S4
3.1.31PutoraniteCu9(Fe,Ni)9S16
3.1.32Orickite2CuFeS2 · H2O
3.1.33EskeborniteCuFeSe2
3.1.34Chaméanite(Cu,Fe)4As(Se,S)4
3.1.35TalnakhiteCu9(Fe,Ni)8S16

Other Names for Roxbyite

Name in Other Languages:
German:Roxbyit
Simplified Chinese:五硫铜矿
Spanish:Roxbyita

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 Roxbyite

Reference List:
Mumme, W.G., G.J. Sparrow, and G.S. Walker (1988): Roxbyite, a new copper sulphide mineral from the Olympic Dam deposit, Roxby Downs, South Australia. Mineral. Mag., 52, 323-330. [Abs. in American Mineralogist (1989): 74: 947.]

Internet Links for Roxbyite

Localities for Roxbyite

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.
Atlantic Ocean
 
  • Mid-Atlantic Ridge complex
Gablina, I.F., Semkova, T.A., Stepanova, T.V., and Gor'kova, N.V. (2006): Lithology and Mineral Resources 41(1), 27-44.
Australia
 
  • New South Wales
    • Robinson Co.
      • Cobar
Chapman, J. & Scott, K. (2005): Supergene minerals from the oxidised zone of the Elura (Endeavor) lead-zinc-silver deposit. Australian Journal of Mineralogy, 11, 83-90.
  • South Australia
    • Stuart Shelf
      • Roxby Downs
Roberts, D.E., Hudson, G.R.T., and Li, Z. (1984): Geology and Prospecting 20(7), 32-37, 51 (as potentially new copper sulphide with low copper content); MM 1988, 323-330
  • Tasmania
    • Scamander district
Bottrill & Baker (in prep) Catalogue of minerals of Tasmania
Chile
 
  • Libertador General Bernardo O'Higgins Region
    • Cachapoal Province
      • Rancagua
        • El Teniente
Clarck, A.H. (1972): A natural occurrence of hexagonal Cu1.83S in Rancagua, Chile. Nature Phys. Sci. 238, 123-124.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
      • Příbram
        • Vrančice
[Lapis 1995, 12, p.13-24]
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
Ondruš P, Veselovský F, Gabašová A, Hloušek J, Šrein V, Vavrín I, Skála R, Sejkora J, Drábek M (2003) Primary minerals of the Jáchymov ore district, Journal of the Czech Geological Society 48, 19-147
    • Ústí Region
      • Krušné Hory Mts (Erzgebirge)
        • Klášterec nad Ohří
- Hyrsl, J. & Korbel, P. (2009): Tschechien & Slowakei, Mineralien und Fundstellen. Page 71.
Finland
 
  • Lapland Region
    • Penikat complex
      • Sompujärvi Reef
Canadian Mineralogist: 43: 1663-1686.
Hungary
 
  • Borsod-Abaúj-Zemplén Co.
    • Rudabányai Mts
      • Rudabánya
GEODA 2010/1
Japan
 
  • Honshu Island
    • Chubu Region
      • Niigata Prefecture
        • Aga-machi (Higashi-Kanbara-gun)
Yamada (2002) Suisyou, 6-8.
Kazakhstan
 
  • Pavlodar Province (Pavlodar Oblysy; Pavlodarskaya Oblast')
Pavel M. Kartashov XRD diagnostic
Namibia
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Blaß, G., Kruijen, F. & Seyb, R. (2009): Neues von der Tsumeb Mine. Mineralien-Welt 20 (5), 60-65 (in German).
Peru
 
  • Tacna Department
    • Tacna Province
      • Barrio Obrero
Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Spain
 
  • Asturias
    • Río Narcea Gold Belt
      • Belmonte de Miranda
Mesa, M., Calvo, M. & Viñals,(2002). El Valle - Boinás, un proyecto moderno con minerales de excepción. Bocamina, 9, 40-85.
Switzerland
 
  • Wallis (Valais)
    • Anniviers Valley
      • Saint-Luc
Ansermet, S. (2012): Mines et minéraux du Valais - II. Anniviers et Tourtemagne. With contributions by N. Meisser, Ed. Porte-plumes (Ayer)
UK
 
  • Scotland
    • North West Highlands
      • Loch Kishorn
Faithfull, J., Young, B., Starkey, R.E. (2012) Copper mineralisation at Rassal, Kishorn, Highland Region. Journal of the Russell Society, Vol. 15, pg. 49-58.
  • Wales
    • Powys
      • Old Radnor
        • Wethel
Cotterell TF et al (2011) The mineralogy of Dolyhir quarry, Old Radnor. Powys, Wales. UKJMM 32:5-61
Mineral and/or Locality  
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