Minakawaite
A valid IMA mineral species
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About Minakawaite
Formula:
RhSb
Colour:
rose gray
Lustre:
Metallic
Specific Gravity:
10.04 (Calculated)
Crystal System:
Orthorhombic
Name:
Japanese mineralogist, Prof. Tetsuo Minakawa (b. 1950) of Ehime University for his outstanding contribution to descriptive mineralogy from Kyushu and Shikoku, Japan.
Unique combination of elements (among the accepted and named mineral species). The Sb analogue of cherepanovite.
Probably identical to UM1979-19-Sb:Rh.
Probably identical to UM1979-19-Sb:Rh.
Unique Identifiers
Mindat ID:
53687
Long-form identifier:
mindat:1:1:53687:5
GUID
(UUID V4):
(UUID V4):
84878a90-c321-4e1c-9b20-a853026fec5e
IMA Classification of Minakawaite
Approved
Approval year:
2019
Classification of Minakawaite
2.CC.15
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.
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 |
|---|---|---|
| Mka | 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 Minakawaite
Optical Data of Minakawaite
Anisotropism:
moderate as reddish gray to bluish gray
Colour in reflected light:
pale gray
Pleochroism:
Weak
Comments:
pinkish pale gray to bluish pale gray
Chemistry of Minakawaite
Mindat Formula:
RhSb
Elements listed:
Crystallography of Minakawaite
Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 5.934(7) Å, b = 3.848(3) Å, c = 6.305(4) Å
Ratio:
a:b:c = 1.542 : 1 : 1.639
Unit Cell V:
143.97 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 2.860 Å | (63) |
| 2.774 Å | (35) |
| 2.250 Å | (47) |
| 2.199 Å | (100) |
| 2.162 Å | (38) |
| 1.923 Å | (49) |
| 1.843 Å | (51) |
| 1.584 Å | (28) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| High-𝑇 alteration and/or metamorphism | |
| 33 : Minerals deposited by hydrothermal metal-rich fluids (see also [#12]) |
Type Occurrence of Minakawaite
General Appearance of Type Material:
outmost surface layer of PGM grains
Place of Conservation of Type Material:
Mineralogical collections of the National Museum of Nature and Science, Tsukuba, Japan, specimen number NSM-46296 (holotype) and NSM-46297 (cotype)
Associated Minerals at Type Locality:
Reference:
NISHIO–HAMANE, D., Tanaka, T., & Shinmachi, T. (2019). Minakawaite and platinum–group minerals in the placer from the clinopyroxenite area in serpentinite mélange of Kurosegawa belt, Kumamoto Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 114(5), 252-262.
Synonyms of Minakawaite
Common Associates
Associated Minerals Based on Photo Data:
| 1 photo of Minakawaite associated with Erlichmanite | OsS2 |
| 1 photo of Minakawaite associated with Tulameenite | Pt2CuFe |
Related Minerals - Strunz-mindat Grouping
| 2.CC. | Tilkerodeite | Pd2HgSe3 |
| 2.CC. | UM2007-26-S:CuFeIrNiPtRh | (Ir,Cu,Ni,Pt,Rh,Fe)9S11 |
| 2.CC. | Crowningshieldite | (Ni0.9Fe0.10)S |
| 2.CC. | Eliopoulosite | V7S8 |
| 2.CC. | Kuvaevite | Ir5Ni10S16 |
| 2.CC. | Torryweiserite | Rh5Ni10S16 |
| 2.CC. | Tamuraite | Ir5Fe10S16 |
| 2.CC. | Ferrotorryweiserite | Rh5Fe10S16 |
| 2.CC.05 | Achávalite | FeSe |
| 2.CC.05 | Breithauptite | NiSb |
| 2.CC.05 | Freboldite | CoSe |
| 2.CC.05 | Kotulskite | Pd(Te,Bi)2-x (x ≈ 0.4) |
| 2.CC.05 | Langisite | CoAs |
| 2.CC.05 | Nickeline | NiAs |
| 2.CC.05 | Sederholmite | beta-NiSe |
| 2.CC.05 | Sobolevskite | PdBi |
| 2.CC.05 | Stumpflite | PtSb |
| 2.CC.05 | Sudburyite | PdSb |
| 2.CC.05 | Jaipurite | CoS |
| 2.CC.05 | Zlatogorite | NiCuSb2 |
| 2.CC.10 | Pyrrhotite | Fe1-xS |
| 2.CC.10 | Smythite | (Fe,Ni)3+xS4 (x=0-0.3) |
| 2.CC.10 | Troilite | FeS |
| 2.CC.15 | Cherepanovite | RhAs |
| 2.CC.15 | Modderite | (Co,Fe)As |
| 2.CC.15 | Ruthenarsenite | (Ru,Ni)As |
| 2.CC.15 | Westerveldite | (Fe,Ni,Co)As |
| 2.CC.20 | Millerite | NiS |
| 2.CC.20 | Mäkinenite | γ-NiSe |
| 2.CC.20 | UM1990-38-S:CuFeIrNiPtRh | (Ni,Fe,Rh,Cu,Ir,Pt)S |
| 2.CC.25 | Mackinawite | FeS |
| 2.CC.30 | Hexatestibiopanickelite | (Pd,Ni)(Sb,Te) ? |
| 2.CC.30 | Vavřínite | Ni2SbTe2 |
| 2.CC.35a | Braggite | PdPt3S4 |
| 2.CC.35b | Cooperite | PtS |
| 2.CC.35a | Vysotskite | PdS |
| 2.CC.45 | Jacutingaite | Pt2HgSe3 |
| 2.CC.50 | Imgreite | NiTe (?) |
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 Minakawaite
mindat.org URL:
https://www.mindat.org/min-53687.html
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Please feel free to link to this page.
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References for Minakawaite
Localities for Minakawaite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Japan | |
| NISHIO–HAMANE et al. (2022) |
| Miyawaki et al. (2019) +1 other reference |
Saudi Arabia | |
| Zaccarini F et al. (PGE) +1 other reference |
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Haraigawa, Misato, Shimomashiki District, Kumamoto Prefecture, Japan