Horomanite
A valid IMA mineral species
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About Horomanite
Horoman kozan open and operational parts
Horoman mine, Horoman peridotite body, Samani-cho, Samani District, Hidaka Subprefecture, Hokkaidō Prefecture, Japan
Horoman mine, Horoman peridotite body, Samani-cho, Samani District, Hidaka Subprefecture, Hokkaidō Prefecture, Japan
Formula:
Fe6Ni3S8
Colour:
white with yellowish tint
Lustre:
Metallic
Specific Gravity:
6.44 (Calculated)
Crystal System:
Tetragonal
Name:
Named by A. Kitakaze, H. Itoh, and R. Komatsu in 2011 after the type locality, Horoman mine, Japan.
Compare pentlandite and mackinawite.
See also the chemically similar UM2002-26-S:FeNi and UM2007-27-S:CuFeIrNiRh.
See also the chemically similar UM2002-26-S:FeNi and UM2007-27-S:CuFeIrNiRh.
Unique Identifiers
Mindat ID:
32665
Long-form identifier:
mindat:1:1:32665:8
GUID
(UUID V4):
(UUID V4):
cd290820-09b3-4a2f-899a-5fd182a86961
IMA Classification of Horomanite
Approved
Approval year:
2007
First published:
2011
Type description reference:
Classification of Horomanite
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 : 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
2.7.2.3
2 : SULFIDES
7 : AmBnXp, with (m+n):p = 9:8
2 : SULFIDES
7 : AmBnXp, with (m+n):p = 9:8
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Hmn | 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 Horomanite
Metallic
Transparency:
Opaque
Colour:
white with yellowish tint
Hardness:
VHN50=125 - 145 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Distinct/Good
Fracture:
Irregular/Uneven
Density:
6.44 g/cm3 (Calculated)
Comment:
Cámara et al. (2014) discuss whether the calculated density might be in error
Optical Data of Horomanite
Anisotropism:
weak dark-gray to light gray
Reflectivity:
Wavelength | R1 | R2 |
---|---|---|
436nm | 34.7% | 37.8% |
497nm | 40.0% | 43.2% |
543nm | 43.2% | 46.4% |
586nm | 45.4% | 48.5% |
648nm | 47.8% | 50.7% |
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 50.7%.
R1 shown in black, R2 shown in red
Colour in reflected light:
white with yellowish tint
Internal Reflections:
none
Pleochroism:
Weak
Comments:
white to white with yellowish tint
Chemistry of Horomanite
Mindat Formula:
Fe6Ni3S8
Elements listed:
Crystallography of Horomanite
Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
P4/mmm
Setting:
P4/mmm
Cell Parameters:
a = 8.707(1) Å, c = 10.439(6) Å
Ratio:
a:c = 1 : 1.199
Unit Cell V:
791.40 ų (Calculated from Unit Cell)
Z:
4
Morphology:
anhedral
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
3.080 Å | (100) |
1.825 Å | (60) |
1.805 Å | (54) |
1.947 Å | (51) |
2.955 Å | (32) |
1.984 Å | (25) |
6.16 Å | (10) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 3a: Earth’s earliest Hadean crust | >4.50 |
7 : Ultramafic igneous rocks | |
Stage 3b: Earth’s earliest hydrosphere | >4.45 |
12 : Hadean hydrothermal subsurface sulfide deposits (see also #33) | |
High-𝑇 alteration and/or metamorphism | |
33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Horomanite
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:
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.
Synonyms of Horomanite
Other Language Names for Horomanite
Japanese:幌満鉱
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
2.BB. | Samaniite | Cu2Fe5Ni2S8 |
2.BB. | UM2007-27-S:CuFeIrNiRh | (Ni,Fe,Cu,Rh,Ir)11S9 |
2.BB. | Arsenotučekite | Ni18Sb3AsS16 |
2.BB. | Hrabákite | Ni9PbSbS8 |
2.BB.05 | Heazlewoodite | Ni3S2 |
2.BB.05 | Oregonite | Ni2FeAs2 |
2.BB.05 | Vozhminite | (Ni,Co)4(As,Sb)S2 |
2.BB.05 | UM2007-30-S:Fe | Fe3S2 |
2.BB.10 | Arsenohauchecornite | Ni18Bi3AsS16 |
2.BB.10 | Bismutohauchecornite | Ni9Bi2S8 |
2.BB.10 | Hauchecornite | Ni9BiSbS8 |
2.BB.10 | Tellurohauchecornite | Ni9Bi(Te,Bi)S8 |
2.BB.10 | Tučekite | Ni9Sb2S8 |
2.BB.15 | Argentopentlandite | Ag(Fe,Ni)8S8 |
2.BB.15 | Cobaltpentlandite | Co9S8 |
2.BB.15 | Geffroyite | (Cu,Fe,Ag)9(Se,S)8 |
2.BB.15 | Godlevskite | (Ni,Fe)9S8 |
2.BB.15 | Kharaelakhite | (Cu,Pt,Pb,Fe,Ni)9S8 |
2.BB.15 | Manganoshadlunite | (Mn,Pb,Cd)(Cu,Fe)8S8 |
2.BB.15 | Pentlandite | (NixFey)Σ9S8 |
2.BB.15 | Shadlunite | (Pb,Cd)(Fe,Cu)8S8 |
2.BB.15 | Sugakiite | Cu(Fe,Ni)8S8 |
2.BB.15 | UM2002-26-S:FeNi | (Ni,Fe)9S8 |
2.BB.15 | Ferhodsite | (Fe,Rh,Ni,Ir,Cu,Pt)9S8 |
2.BB.15 | Oberthürite | Rh3Ni32S32 |
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.
Internet Links for Horomanite
mindat.org URL:
https://www.mindat.org/min-32665.html
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References for Horomanite
Localities for Horomanite
Locality List
- 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.
All localities listed without proper references should be considered as questionable.
Bolivia | |
| Hatløy (2013) |
Egypt | |
| Zoheir (2011) |
Japan (TL) | |
| Kitakaze et al. (2011) |
| Kitakaze et al. (2016) |
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Horoman peridotite body, Samani-cho, Samani District, Hidaka Subprefecture, Hokkaidō Prefecture, Japan