Kitakaze, Arashi, Itoh, Hironori, Komatsu, Ryuichi (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 (4) 204-210 doi:10.2465/jmps.110502

Classification of SamaniiteHide

Strunz-mindat (2024):

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 : A_mB_nX_p, 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.

Symbol	Source	Reference
Smn	IMA–CNMNC	Warr, 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:

Wavelength	R₁	R₂
436nm	27.1%	29.6%
497nm	34.4%	37.9%
543nm	38.9%	43.6%
586nm	44.9%	49.8%
648nm	42.2%	46.9%

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. 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

Elements listed:

Cu, Fe, Ni, S - search for minerals with similar chemistry

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 Å³ (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
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 Mode	Earliest Age (Ga)
Stage 3b: Earth’s earliest hydrosphere	>4.45
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33)

Type Occurrence of SamaniiteHide

Type Locality:

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

General Appearance of Type Material:

Anhedral grains to 0.05mm.

Place of Conservation of Type Material:

Tohoku University Museum, Japan.

Geological Setting of Type Material:

Lherzolite inclusions in peridotite.

Associated Minerals at Type Locality:

Horomanite

Bornite

Reference:

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.

Download:

https://rruff.info/rruff_1.0/uploads/JMPS106_204.pdf

Synonyms of SamaniiteHide

IMA2007-038

UM1998-14-S:CuFeNi

Other Language Names for SamaniiteHide

Japanese:様似鉱

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Samaniite associated with Horomanite	Fe₆Ni₃S₈
1 photo of Samaniite associated with Sugakiite	Cu(Fe,Ni)₈S₈

Related Minerals - Strunz-mindat Grouping Hide

2.BB.	Horomanite	Fe₆Ni₃S₈	Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.	UM2007-27-S:CuFeIrNiRh	(Ni,Fe,Cu,Rh,Ir)₁₁S₉
2.BB.	Arsenotučekite	Ni₁₈Sb₃AsS₁₆	Tet. 4mm : I4mm
2.BB.	Hrabákite	Ni₉PbSbS₈	Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.05	Heazlewoodite	Ni₃S₂	Trig. 3 2 : R3 2
2.BB.05	Oregonite	Ni₂FeAs₂	Hex.
2.BB.05	Vozhminite	(Ni,Co)₄(As,Sb)S₂	Hex.
2.BB.05	UM2007-30-S:Fe	Fe₃S₂
2.BB.10	Arsenohauchecornite	Ni₁₈Bi₃AsS₁₆	Tet.
2.BB.10	Bismutohauchecornite	Ni₉Bi₂S₈	Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.10	Hauchecornite	Ni₉BiSbS₈	Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.10	Tellurohauchecornite	Ni₉Bi(Te,Bi)S₈	Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.10	Tučekite	Ni₉Sb₂S₈	Tet. 4/mmm (4/m 2/m 2/m) : P4/mmm
2.BB.15	Argentopentlandite	Ag(Fe,Ni)₈S₈	Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15	Cobaltpentlandite	Co₉S₈	Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15	Geffroyite	(Cu,Fe,Ag)₉(Se,S)₈	Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15	Godlevskite	(Ni,Fe)₉S₈	Orth. 2 2 2 : C2 2 2
2.BB.15	Kharaelakhite	(Cu,Pt,Pb,Fe,Ni)₉S₈	Orth. mmm (2/m 2/m 2/m) : Pmmm
2.BB.15	Manganoshadlunite	(Mn,Pb,Cd)(Cu,Fe)₈S₈
2.BB.15	Pentlandite	(Ni_xFe_y)_Σ9S₈	Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15	Shadlunite	(Pb,Cd)(Fe,Cu)₈S₈	Iso. m3m (4/m 3 2/m) : Fm3m
2.BB.15	Sugakiite	Cu(Fe,Ni)₈S₈	Tet. 4/mmm (4/m 2/m 2/m) : P4₂/mnm
2.BB.15	UM2002-26-S:FeNi	(Ni,Fe)₉S₈	Hex.
2.BB.15	Ferhodsite	(Fe,Rh,Ni,Ir,Cu,Pt)₉S₈	Tet.
2.BB.15	Oberthürite	Rh₃Ni₃₂S₃₂	Iso.

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

mindat.org URL:

https://www.mindat.org/min-32666.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for SamaniiteHide

Reference List:

Kitakaze, A. (1998) Sulfide minerals from the Horoman peridotite, Hokkaido, Japan. Journal of Mineralogy, Petrology and Economic Geology: 93: 369-379.

Cámara, F., Diego Gatta, G., Belakovskiy, D. (2014) New mineral names. American Mineralogist: 99: 551-555.

(2023) Samaniite. Handbook of Mineralogy. Mineralogical Society of America

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 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 ⓘ Maracás Menchen mine	Campbell (2012)

Costa Rica
Guanacaste Province Nicoya Canton ⓘ Santa Elena ultramafic Nappe	Schwarzenbach et al. (2014) +1 other reference

France
Auvergne-Rhône-Alpes Ain Bourg-en-Bresse Lescheroux ⓘ Reyssouze River placer	Ducluzaux B. (2022)

Italy
Piedmont Vercelli Province Cravagliana ⓘ Valmaggia	Sessa et al. (2017)

Japan (TL)
Hokkaidō Prefecture Hidaka Subprefecture Samani District Samani-cho ⓘ Horoman peridotite body (TL)	Kitakaze et al. (2011)

Samaniite

About SamaniiteHide

Unique IdentifiersHide

IMA Classification of SamaniiteHide