Langisite
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About Langisite
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 Langisite
Approved
First Published:
1969
2/C.20-10
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 : 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
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
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 Langisite
Optical Data of Langisite
Type:
Anisotropic
Anisotropism:
Medium
Reflectivity:
| 6-47%nm | R=6-47% |
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 Langisite
Formula:
(Co,Ni)As
IMA Formula:
CoAs
Elements listed:
Crystallography of Langisite
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 Langisite
Place of Conservation of Type Material:
Canadian Geological Survey, Ottawa, 12140.
Royal Ontario Museum, Toronto, Canada.
Royal Ontario Museum, Toronto, Canada.
Associated Minerals at Type Locality:
Synonyms of Langisite
Other Language Names for Langisite
Relationship of Langisite to other Species
Member of:
Other Members of this group:
| Achávalite | (Fe,Cu)Se | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| Breithauptite | NiSb | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| Freboldite | CoSe | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| Kotulskite | Pd(Te,Bi) | Hex. |
| Nickeline | NiAs | Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm |
| Sobolevskite | Pd(Bi,Te) | Hex. |
| Sudburyite | (Pd,Ni)Sb | Hex. |
| Vavřínite | Ni2SbTe2 | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
Related Minerals - Nickel-Strunz Grouping
| 2.CC. | UM2007-26-S:CuFeIrNiPtRh | (Ir,Cu,Ni,Pt,Rh,Fe)9S11 | |
| 2.CC.05 | Achávalite | (Fe,Cu)Se | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 2.CC.05 | Breithauptite | NiSb | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 2.CC.05 | Freboldite | CoSe | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 2.CC.05 | Kotulskite | Pd(Te,Bi) | Hex. |
| 2.CC.05 | Nickeline | NiAs | Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm |
| 2.CC.05 | Sederholmite | beta-NiSe | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 2.CC.05 | Sobolevskite | Pd(Bi,Te) | Hex. |
| 2.CC.05 | Stumpflite | Pt(Sb,Bi) | Hex. |
| 2.CC.05 | Sudburyite | (Pd,Ni)Sb | Hex. |
| 2.CC.05 | Jaipurite | CoS | Hex. |
| 2.CC.05 | Zlatogorite | NiCuSb2 | Trig. |
| 2.CC.10 | Pyrrhotite | Fe7S8 | Mon. |
| 2.CC.10 | Smythite | (Fe,Ni)3+xS4 (x=0-0.3) | Trig. 3m (3 2/m) : R3m |
| 2.CC.10 | Troilite | FeS | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 2.CC.15 | Cherepanovite | RhAs | Orth. mmm (2/m 2/m 2/m) : Pnma |
| 2.CC.15 | Modderite | (Co,Fe)As | Orth. |
| 2.CC.15 | Ruthenarsenite | (Ru,Ni)As | Orth. |
| 2.CC.15 | Westerveldite | (Fe,Ni,Co)As | Orth. |
| 2.CC.20 | Millerite | NiS | Trig. 3m : R3m |
| 2.CC.20 | Mäkinenite | γ-NiSe | Trig. |
| 2.CC.20 | UM1990-38-S:CuFeIrNiPtRh | (Ni,Fe,Rh,Cu,Ir,Pt)S | |
| 2.CC.25 | Mackinawite | (Fe,Ni)9S8 | Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm |
| 2.CC.30 | Hexatestibiopanickelite | (Pd,Ni)(Sb,Te) | Hex. |
| 2.CC.30 | Vavřínite | Ni2SbTe2 | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 2.CC.35a | Braggite | (Pt,Pd,Ni)S | Tet. |
| 2.CC.35b | Cooperite | PtS | Tet. 4/mmm (4/m 2/m 2/m) : P42/mmc |
| 2.CC.35a | Vysotskite | (Pd,Ni)S | Tet. |
Related Minerals - Dana Grouping (8th Ed.)
| 2.8.11.1 | Nickeline | NiAs | Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm |
| 2.8.11.2 | Breithauptite | NiSb | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 2.8.11.3 | Sederholmite | beta-NiSe | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 2.8.11.4 | Hexatestibiopanickelite | (Pd,Ni)(Sb,Te) | Hex. |
| 2.8.11.10 | Freboldite | CoSe | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
Related Minerals - Hey's Chemical Index of Minerals Grouping
| 3.11.1 | Heazlewoodite | Ni3S2 | Trig. 3 2 : R3 2 |
| 3.11.2 | Godlevskite | (Ni,Fe)9S8 | Orth. 2 2 2 : C2 2 2 |
| 3.11.3 | Millerite | NiS | Trig. 3m : R3m |
| 3.11.4 | Polydymite | Ni2+Ni3+2S4 | Iso. |
| 3.11.5 | Vaesite | NiS2 | Iso. m3 (2/m 3) : Pa3 |
| 3.11.6 | Shandite | Ni3Pb2S2 | Trig. |
| 3.11.7 | Donharrisite | Ni3HgS3 | Mon. 2/m : B2/m |
| 3.11.8 | Violarite | Fe2+Ni3+2S4 | Iso. |
| 3.11.9 | Pentlandite | (FexNiy)Σ9S8 | Iso. m3m (4/m 3 2/m) : Fm3m |
| 3.11.10 | Bravoite | (Fe,Ni)S2 | Iso. m3 (2/m 3) : Pa3 |
| 3.11.11 | Siegenite | CoNi2S4 | Iso. m3m (4/m 3 2/m) : Fd3m |
| 3.11.12 | Fletcherite | Cu(Ni,Co)2S4 | Iso. m3m (4/m 3 2/m) : Fd3m |
| 3.11.13 | Villamaninite | (Cu,Ni,Co,Fe)S2 | |
| 3.11.14 | Mäkinenite | γ-NiSe | Trig. |
| 3.11.15 | Sederholmite | beta-NiSe | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 3.11.16 | Trüstedtite | Ni3Se4 | Iso. |
| 3.11.17 | Wilkmanite | Ni3Se4 | Mon. |
| 3.11.18 | Kullerudite | NiSe2 | Orth. mmm (2/m 2/m 2/m) : Pnnm |
| 3.11.19 | Penroseite | (Ni,Co,Cu)Se2 | Iso. m3 (2/m 3) : Pa3 |
| 3.11.20 | Tyrrellite | Cu(Co3+,Ni3+)2Se4 | Iso. m3m (4/m 3 2/m) : Fd3m |
| 3.11.21 | Imgreite | NiTe (?) | Hex. |
| 3.11.22 | Melonite | NiTe2 | Trig. 3m (3 2/m) : P3m1 |
| 3.11.23 | Kitkaite | NiTeSe | Trig. 3m (3 2/m) : P3m1 |
| 3.11.24 | Dienerite | ||
| 3.11.25 | Orcelite | Ni5-xAs2, x ~ 0.25 | Hex. 6mm : P63mc |
| 3.11.26 | Maucherite | Ni11As8 | Tet. 4 2 2 : P41 21 2 |
| 3.11.27 | Nickeline | NiAs | Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm |
| 3.11.28 | Rammelsbergite | NiAs2 | Orth. mmm (2/m 2/m 2/m) : Pnnm |
| 3.11.29 | Pararammelsbergite | NiAs2 | Orth. |
| 3.11.30 | Nickelskutterudite | (Ni,Co,Fe)As3 | Iso. m3 (2/m 3) : Im3 |
| 3.11.31 | Oregonite | Ni2FeAs2 | Hex. |
| 3.11.32 | Westerveldite | (Fe,Ni,Co)As | Orth. |
| 3.11.34 | Gersdorffite | NiAsS | Iso. m3 (2/m 3) : Pa3 |
| 3.11.35 | Jolliffeite | NiAsSe | Iso. m3 (2/m 3) : Pa3 |
| 3.11.36 | Breithauptite | NiSb | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
| 3.11.38 | Ullmannite | NiSbS | Iso. 2 3 : P21 3 |
| 3.11.39 | Willyamite | CoSbS |
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 Langisite
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 Langisite
mindat.org URL:
https://www.mindat.org/min-2321.html
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Localities for Langisite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Canada (TL) | |
| 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 | |
| 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 | |
| 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 | |
| from XRD and EPMA results - B. Smith |
Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada