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Langisite

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About LangisiteHide

Formula:
(Co,Ni)As
Colour:
Pink
Lustre:
Metallic
Hardness:
6 - 6½
Specific Gravity:
8.17 (Calculated)
Crystal System:
Hexagonal
Member of:
Name:
Named by W. Petruk, D.C. Harris, and J.M. Stewart in 1969 after the type locality of Langis mine, Cobalt-Gowganda area, Canada.

Classification of LangisiteHide

Approved
First Published:
1969
2.CC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
C : With Ni, Fe, Co, PGE, etc.
2.8.11.9

2 : SULFIDES
8 : AmXp, with m:p = 1:1
3.11.33

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

Physical Properties of LangisiteHide

Metallic
Transparency:
Opaque
Colour:
Pink
Hardness:
6 - 6½ on Mohs scale
Density:
8.17 g/cm3 (Calculated)

Optical Data of LangisiteHide

Type:
Anisotropic
Anisotropism:
Medium
Reflectivity:
6-47%nmR=6-47%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 6-47%.
Colour in reflected light:
pinkish-tan
Pleochroism:
Weak

Chemical Properties of LangisiteHide

Formula:
(Co,Ni)As
IMA Formula:
CoAs

Crystallography of LangisiteHide

Crystal System:
Hexagonal
Class (H-M):
6 - Pyramidal
Space Group:
P63
Cell Parameters:
a = 3.53 Å, c = 5.12 Å
Ratio:
a:c = 1 : 1.45
Unit Cell V:
55.25 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Minute irregular grains and lamellae.

Type Occurrence of LangisiteHide

Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, 12140.
Royal Ontario Museum, Toronto, Canada.
Associated Minerals at Type Locality:

Synonyms of LangisiteHide

Other Language Names for LangisiteHide

German:Langisit
Spanish:Langisita

Relationship of Langisite to other SpeciesHide

Member of:
Other Members of this group:
Achávalite(Fe,Cu)SeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
BreithauptiteNiSbHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
FrebolditeCoSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
KotulskitePd(Te,Bi)Hex.
NickelineNiAsHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
SobolevskitePd(Bi,Te)Hex.
Sudburyite(Pd,Ni)SbHex.

Related Minerals - Nickel-Strunz GroupingHide

2.CC.UM2007-26-S:CuFeIrNiPtRh(Ir,Cu,Ni,Pt,Rh,Fe)9S11
2.CC.05Achávalite(Fe,Cu)SeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05BreithauptiteNiSbHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05FrebolditeCoSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05KotulskitePd(Te,Bi)Hex.
2.CC.05NickelineNiAsHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
2.CC.05Sederholmitebeta-NiSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.05SobolevskitePd(Bi,Te)Hex.
2.CC.05StumpflitePt(Sb,Bi)Hex.
2.CC.05Sudburyite(Pd,Ni)SbHex.
2.CC.05JaipuriteCoSHex.
2.CC.05ZlatogoriteNiCuSb2Trig.
2.CC.10PyrrhotiteFe7S8Mon.
2.CC.10Smythite(Fe,Ni)3+xS4 (x=0-0.3)Trig. 3m (3 2/m) : R3m
2.CC.10TroiliteFeSHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.15CherepanoviteRhAsOrth. mmm (2/m 2/m 2/m) : Pnma
2.CC.15Modderite(Co,Fe)AsOrth.
2.CC.15Ruthenarsenite(Ru,Ni)AsOrth.
2.CC.15Westerveldite(Fe,Ni,Co)AsOrth.
2.CC.20MilleriteNiSTrig. 3m : R3m
2.CC.20Mäkineniteγ-NiSeTrig.
2.CC.20UM1990-38-S:CuFeIrNiPtRh(Ni,Fe,Rh,Cu,Ir,Pt)S
2.CC.25Mackinawite(Fe,Ni)9S8Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
2.CC.30Hexatestibiopanickelite(Pd,Ni)(Sb,Te)Hex.
2.CC.30VavříniteNi2SbTe2Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.CC.35aBraggite(Pt,Pd,Ni)STet.
2.CC.35bCooperitePtSTet. 4/mmm (4/m 2/m 2/m) : P42/mmc
2.CC.35aVysotskite(Pd,Ni)STet.

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

2.8.11.1NickelineNiAsHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
2.8.11.2BreithauptiteNiSbHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.8.11.3Sederholmitebeta-NiSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
2.8.11.4Hexatestibiopanickelite(Pd,Ni)(Sb,Te)Hex.
2.8.11.10FrebolditeCoSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.11.1HeazlewooditeNi3S2Trig. 3 2 : R3 2
3.11.2Godlevskite(Ni,Fe)9S8Orth. 2 2 2 : C2 2 2
3.11.3MilleriteNiSTrig. 3m : R3m
3.11.4PolydymiteNi2+Ni3+2S4Iso.
3.11.5VaesiteNiS2Iso. m3 (2/m 3) : Pa3
3.11.6ShanditeNi3Pb2S2Trig.
3.11.7DonharrisiteNi3HgS3Mon. 2/m : B2/m
3.11.8ViolariteFe2+Ni3+2S4Iso.
3.11.9Pentlandite(FexNiy)Σ9S8Iso. m3m (4/m 3 2/m) : Fm3m
3.11.10Bravoite(Fe,Ni)S2Iso. m3 (2/m 3) : Pa3
3.11.11SiegeniteCoNi2S4Iso. m3m (4/m 3 2/m) : Fd3m
3.11.12FletcheriteCu(Ni,Co)2S4Iso. m3m (4/m 3 2/m) : Fd3m
3.11.13Villamaninite(Cu,Ni,Co,Fe)S2
3.11.14Mäkineniteγ-NiSeTrig.
3.11.15Sederholmitebeta-NiSeHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.11.16TrüstedtiteNi3Se4Iso.
3.11.17WilkmaniteNi3Se4Mon.
3.11.18KulleruditeNiSe2Orth. mmm (2/m 2/m 2/m) : Pnnm
3.11.19Penroseite(Ni,Co,Cu)Se2Iso. m3 (2/m 3) : Pa3
3.11.20TyrrelliteCu(Co3+,Ni3+)2Se4Iso. m3m (4/m 3 2/m) : Fd3m
3.11.21ImgreiteNiTe (?)Hex.
3.11.22MeloniteNiTe2Trig.
3.11.23KitkaiteNiTeSeTrig.
3.11.24Dienerite
3.11.25OrceliteNi5-xAs2, x ~ 0.25Hex. 6mm : P63mc
3.11.26MaucheriteNi11As8Tet. 4 2 2 : P41 21 2
3.11.27NickelineNiAsHex. 6/mmm (6/m 2/m 2/m) : P63/mcm
3.11.28RammelsbergiteNiAs2Orth. mmm (2/m 2/m 2/m) : Pnnm
3.11.29PararammelsbergiteNiAs2Orth.
3.11.30Nickelskutterudite(Ni,Co,Fe)As3Iso. m3 (2/m 3) : Im3
3.11.31OregoniteNi2FeAs2Hex.
3.11.32Westerveldite(Fe,Ni,Co)AsOrth.
3.11.34GersdorffiteNiAsSIso. m3 (2/m 3) : Pa3
3.11.35JolliffeiteNiAsSeIso. m3 (2/m 3) : Pa3
3.11.36BreithauptiteNiSbHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
3.11.38UllmanniteNiSbSIso. 2 3 : P21 3
3.11.39Willyamite(Co,Ni)SbS

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 LangisiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Petruk, W., Harris, D.C., Stewart, J.M. (1969) Langisite, a new mineral, and the rare minerals cobalt pentlandite, siegenite, parkerite, and bravoite from the Langis mine, Cobalt-Gowganda area, Ontario, Canada. Canadian Mineralogist 9, 597-616.
Petruk, W., Harris, D.C., Stewart, J.M. (1971) Characteristics of the arsenides, sulpharsenides, and antimonides. The Canadian Mineralogist: 11: 150-186.
Fleischer, M. (1972) New mineral names. American Mineralogist: 57: 1909-1914.
Fjellvåg, H., Selte, K., Stave, F.E. (1984) On the structural and magnetic properties of Co1-tNitAs and CoAs1-xSbx. Acta Chemica Scandinavica A: 38: 687-691.

Internet Links for LangisiteHide

Localities for LangisiteHide

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.
Canada (TL)
 
  • Ontario
    • Timiskaming District
      • Cobalt-Gowganda region
        • Cobalt Area
          • Casey Township
PETRUK, W., HARRIS, D.C. & STEWART, J.M. (1969): Langisite, a new mineral, and the rare minerals cobalt pentlandite, siegenite, parkerite and bravoite from the Langis mine, CobaltBGowganda area, Ontario. Canadian Mineralogist 9, 597-616.
Czech Republic
 
  • Liberec Region
Scharm, B.: Přehled minerálů nalezených v oblasti uranových koncentrací v severočeské křídě. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1995, roč. 3, s. 169-172.
Greece
 
  • Aegean Islands Department (Aiyaíon)
    • Kykládes Prefecture
      • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
        • Tinos Island
Tombros, S.F. (2008): Later stages of evolution of an epithermal system: Au-Ag mineralization at Apigania Bay, Tinos, Island, Cyclades, Hellas, Greece. Min.Pet. (in press)
UK
 
  • England
    • Devon
      • East Devon
        • Budleigh Salterton
from XRD and EPMA results - B. Smith
Mineral and/or Locality  
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