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Samaniite

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Formula:
Cu2Fe5Ni2S8
Colour:
Yellow white
Lustre:
Metallic
Specific Gravity:
4.89 (Calculated)
Crystal System:
Tetragonal
Name:
Named for the county where first discovered.
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Classification of SamaniiteHide

Approved
Approval Year:
2007
2.BB.

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
B : With Ni
2.7.2.4

2 : SULFIDES
7 : AmBnXp, with (m+n):p = 9:8

Physical Properties of SamaniiteHide

Metallic
Transparency:
Opaque
Colour:
Yellow white
Hardness:
VHN50=120 - 140 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
4.89 g/cm3 (Calculated)

Optical Data of SamaniiteHide

Type:
Anisotropic
Anisotropism:
weak dark-gray to light gray
Pleochroism:
Weak
Comments:
yellowish white to pale yellowish white

Chemical Properties of SamaniiteHide

Formula:
Cu2Fe5Ni2S8

Crystallography of SamaniiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P42/mnm
Setting:
P42/mnm
Cell Parameters:
a = 10.089(1) Å, c = 10.402(1) Å
Ratio:
a:c = 1 : 1.031
Unit Cell V:
1,058.80 ų (Calculated from Unit Cell)
Z:
4

Type Occurrence of SamaniiteHide

General Appearance of Type Material:
Anhedral grains to 0.05mm.
Geological Setting of Type Material:
Lherzolite inclusions in peridotite.
Associated Minerals at Type Locality:

Synonyms of SamaniiteHide

Other Language Names for SamaniiteHide

Japanese:様似鉱

Related Minerals - Nickel-Strunz GroupingHide

2.BB.HoromaniteFe6Ni3S8Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.UM2007-27-S:CuFeIrNiRh(Ni,Fe,Cu,Rh,Ir)11S9
2.BB.05HeazlewooditeNi3S2Trig. 3 2 : R3 2
2.BB.05OregoniteNi2FeAs2Hex.
2.BB.05Vozhminite(Ni,Co)4(As,Sb)S2Hex.
2.BB.05UM2007-30-S:FeFe3S2
2.BB.10ArsenohauchecorniteNi18Bi3AsS16Tet.
2.BB.10BismutohauchecorniteNi9Bi2S8Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.10HauchecorniteNi9BiSbS8Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.10TellurohauchecorniteNi9Bi(Te,Bi)S8Tet.
2.BB.10TučekiteNi9Sb2S8Tet.
2.BB.15ArgentopentlanditeAg(Fe,Ni)8S8Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15Cobaltpentlandite(Co,Ni,Fe)9S8Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15Geffroyite(Cu,Fe,Ag)9(Se,S)8Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15Godlevskite(Ni,Fe)9S8Orth. 2 2 2 : C2 2 2
2.BB.15Kharaelakhite(Cu,Pt,Pb,Fe,Ni)9S8Orth. mmm (2/m 2/m 2/m) : Pmmm
2.BB.15Manganoshadlunite(Mn,Pb,Cd)(Cu,Fe)8S8
2.BB.15Pentlandite(FexNiy)Σ9S8Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15Shadlunite(Pb,Cd)(Fe,Cu)8S8
2.BB.15SugakiiteCu(Fe,Ni)8S8Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
2.BB.15UM2002-26-S:FeNi(Ni,Fe)9S8Hex.

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

2.7.2.1Mackinawite(Fe,Ni)9S8Tet. 4/mmm (4/m 2/m 2/m) : P4/nmm
2.7.2.2SugakiiteCu(Fe,Ni)8S8Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
2.7.2.3HoromaniteFe6Ni3S8Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm

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 SamaniiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kitakaze, A. (1998): Sulfide minerals from the Horoman peridotite, Hokkaido, Japan. Journal of Mineralogy, Petrology and Economic Geology, 93, 369-379
Kitakaze, A., Itoh, H., Komatsu, R. (2011): Horomanite, (Fe,Ni,Co,Cu)9S8, and samaniite, Cu2(Fe,Ni)7S8, new mineral species from the Horoman peridotite massif, Hokkaido, Japan. Journal of Mineralogical and Petrological Sciences, 106, 204-210

Internet Links for SamaniiteHide

Localities for SamaniiteHide

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.
Costa Rica
 
  • Guanacaste Province
Schwarzenbach, E. M., Gazel, E., & Caddick, M. J. (2014). Hydrothermal processes in partially serpentinized peridotites from Costa Rica: evidence from native copper and complex sulfide assemblages. Contributions to Mineralogy and Petrology, 168(5), 1-21.
Japan (TL)
 
  • Hokkaido
    • Hidaka Province
      • Samani-gun
        • Samani-cho
Kitakaze A, Itoh H, Komatsu R (2011) Horomanite, (Fe,Ni,Co,Cu)9S8, and samaniite, Cu2(Fe,Ni)7S8, new mineral species from the Horoman peridotite massif, Hokkaido, Japan. Journal of Mineralogical and Petrological Sciences 106, 204-210
Mineral and/or Locality  
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