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Samaniite

A valid IMA mineral species
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01636270017272471097833.jpg
Horomanite, etc.

Horoman peridotite body, Samani-cho, Samani District, Hidaka Subprefecture, Hokkaidō Prefecture, Japan
01636270017272471097833.jpg
Horomanite, etc.

Horoman peridotite body, Samani-cho, Samani District, Hidaka Subprefecture, Hokkaidō Prefecture, Japan
00165920017272059799288.jpg
Horomanite, etc.

Horoman peridotite body, Samani-cho, Samani District, Hidaka Subprefecture, Hokkaidō Prefecture, Japan
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About SamaniiteHide

04069170017272471374214.jpg
Samani, Japan
Formula:
Cu2Fe5Ni2S8
Colour:
Yellow white
Lustre:
Metallic
Specific Gravity:
4.89 (Calculated)
Crystal System:
Tetragonal
Name:
Named for the town (Samani-cho) and county (Samani-gun) where the mineral was first discovered.
Compare, e.g., sugakiite and 'UM1988-19-S:CuFeNiPdRu'.


Unique IdentifiersHide

Mindat ID:
32666
Long-form identifier:
mindat:1:1:32666:7

Similar NamesHide

SeamaniteA valid IMA mineral species - grandfatheredMn32+[B(OH)4](PO4)(OH)2
SimoniteA valid IMA mineral speciesTlHgAs3S6
ZemanniteA valid IMA mineral speciesMg0.5ZnFe3+(Te4+O3)3 · 4.5H2O

IMA Classification of SamaniiteHide

Classification of SamaniiteHide

Strunz-mindat (2026):
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
Dana 8th ed.:
2.7.2.4

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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
SmnIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of SamaniiteHide

Lustre:
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

Anisotropism:
weak dark-gray to light gray
Reflectivity:
WavelengthR1 (%)R2 (%)
436nm27.1%29.6%
497nm34.4%37.9%
543nm38.9%43.6%
586nm44.9%49.8%
648nm42.2%46.9%


Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 49.8%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Yellowish white
Internal Reflections:
None observed
Pleochroism:
Weak
Comments:
Yellowish white to pale yellowish white

Chemistry of SamaniiteHide

Mindat Formula:
Cu2Fe5Ni2S8
Element Weights:
Element% weight
Fe35.788 %
S32.878 %
Cu16.289 %
Ni15.045 %

Calculated from ideal end-member formula.
Fe
S
Cu
Ni
Elements listed:
Cu, Fe, Ni, S - search for minerals with similar chemistry

Crystallography of SamaniiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm(4/m2/m2/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

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.88 Å(15)
3.118 Å(100)
3.050 Å(20)
1.873 Å(25)
1.844 Å(50)
1.595 Å(45)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3b: Earth’s earliest hydrosphere>4.45
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)

Type Occurrence of SamaniiteHide

Synonyms of SamaniiteHide

Other Language Names for SamaniiteHide

Dutch:Samaniiet
German:Samaniit
Japanese:様似鉱

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Samaniite associated with HoromaniteFe6Ni3S8
1 photo of Samaniite associated with SugakiiteCu(Fe,Ni)8S8

Related Minerals - Strunz-mindat GroupingHide

2.BB.ArsenotučekiteNi18Sb3AsS16Tet. 4mm : I4mm
2.BB.HrabákiteNi9PbSbS8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.'UM2007-27-S:CuFeIrNiRh'(Ni,Fe,Cu,Rh,Ir)11S9
2.BB.HoromaniteFe6Ni3S8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.05HeazlewooditeNi3S2Trig. 32 : R32
2.BB.05'UM2007-30-S:Fe'Fe3S2
2.BB.05Vozhminite(Ni,Co)4(As,Sb)S2Hex.
2.BB.05OregoniteNi2FeAs2Hex.
2.BB.10HauchecorniteNi9BiSbS8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.10ArsenohauchecorniteNi18Bi3AsS16Tet.
2.BB.10TellurohauchecorniteNi9Bi(Te,Bi)S8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.10JinxiuiteNi18Bi2SbAsS16Tet. 4/mmm(4/m2/m2/m) : I4/mmm
2.BB.10BismutohauchecorniteNi9Bi2S8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.10TučekiteNi9Sb2S8Tet. 4/mmm(4/m2/m2/m) : P4/mmm
2.BB.15ArgentopentlanditeAg(Fe,Ni)8S8Iso. m3m(4/m32/m) : Fm3m
2.BB.15Shadlunite(Pb,Cd)(Fe,Cu)8S8Iso. m3m(4/m32/m) : Fm3m
2.BB.15Ferhodsite(Fe,Rh,Ni,Ir,Cu,Pt)9S8Tet.
2.BB.15CobaltpentlanditeCo9S8Iso. m3m(4/m32/m) : Fm3m
2.BB.15'UM2002-26-S:FeNi'(Ni,Fe)9S8Hex.
2.BB.15Pentlandite(NixFey)Σ9S8Iso. m3m(4/m32/m) : Fm3m
2.BB.15OberthüriteRh3Ni32S32Iso.
2.BB.15Geffroyite(Cu,Fe,Ag)9(Se,S)8Iso. m3m(4/m32/m) : Fm3m
2.BB.15Kharaelakhite(Cu,Pt,Pb,Fe,Ni)9S8Orth. mmm(2/m2/m2/m) : Pmmm
2.BB.15'Manganoshadlunite'(Mn,Pb,Cd)(Cu,Fe)8S8
2.BB.15SugakiiteCu(Fe,Ni)8S8Tet. 4/mmm(4/m2/m2/m) : P42/mnm
2.BB.15Godlevskite(Ni,Fe)9S8Orth. 222 : C222
2.BB.15WangyanitePdNi8S8Iso. m3m(4/m32/m) : Fd3c

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.

Internet Links for SamaniiteHide

References for SamaniiteHide

Localities for SamaniiteHide

Showing 6 localities.

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.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Brazil
 
  • Bahia
    • Maracás
      • Rio Jacaré layered complex
Campbell (2012)
Costa Rica
 
  • Guanacaste Province
    • Nicoya Canton
Schwarzenbach et al. (2014) +1 other reference
Egypt
 
  • Red Sea Governorate
Khedr et al. (2020)
France
 
  • Auvergne-Rhône-Alpes
    • Ain
      • Bourg-en-Bresse
        • Lescheroux
Ducluzaux (2022)
Italy
 
  • Piedmont
    • Vercelli Province
      • Cravagliana
Sessa et al. (2017)
Japan (TL)
 
  • Hokkaidō Prefecture
    • Hidaka Subprefecture
      • Samani District
        • Samani-cho
Kitakaze et al. (2011)
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