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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Sugakiite Mineral Data
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General Sugakiite Information
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Chemical Formula: |
Cu(Fe,Ni)8S8 |
Composition: |
Molecular Weight = 772.05 gm |
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Iron 43.47 % Fe |
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Cobalt 0.15 % Co |
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Copper 7.00 % Cu |
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Nickel 16.19 % Ni |
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Sulfur 33.19 % S |
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______ |
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100.00 % |
Empirical Formula: |
Cu0.85Fe2+6.01Ni2.13Co0.02S7.99 |
Environment: |
Found in the interstices among grains of olivine.in peridotite. Pentlandite group. |
IMA Status: |
Approved IMA 2005 (Dana # Added) |
Locality: |
Horoman, Samani-cho, Urakawa-gun, Japan. Link to MinDat.org Location Data. |
Name Origin: |
Named for Asahiko Sugaki (b. 1923) of Tohoku University, Sendai, Japan. |
Synonym: |
IMA2005-033 |
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Sugakiite Image |
Images:
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Sugakiite
Comments: Reflected light polished section of sugakiite (sg) associated with bornite (bn), talnakhite (td) and native copper (Cu). (CanMin, v43:266).
Location: Horoman, Samani-cho, Urakawa-gun, Japan.
Scale: See Image.
© Canadian Mineralogist |
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Sugakiite Crystallography
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Axial Ratios: |
a:c = 1:0.92267 |
Cell Dimensions: |
a = 10.566, c = 9.749, Z = 4; V = 1,088.38 Den(Calc)= 4.71 |
Crystal System: |
Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: P 41/mnm |
X Ray Diffraction: |
By Intensity(I/Io): 2.072(1)(510), 1.793(0.85)(404), 1.804(0.83)(215),3.061(0.74)(103), 1.954(0.42)(005), 1.962(0.38)(520), 2.641(0.33)(400), 2.975(0.32)(113), 2.93(0.3)(320), |
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Physical Properties of Sugakiite
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Cleavage: |
None |
Color: |
Reddish yellow. |
Diaphaneity: |
Opaque |
Fracture: |
Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments. |
Habit: |
Granular - Generally occurs as anhedral to subhedral crystals in matrix. |
Hardness: |
2-3 - Gypsum-Calcite |
Luster: |
Metallic |
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Optical Properties of Sugakiite
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RL Anisotrophism: |
Weak dark gray to faint light gray. |
RL Color: |
Creamy white with a reddish tint. |
RL Pleochroism: |
None. |
Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Sugakiite in Air
λ |
R1 |
R2 |
![](../images/Reflect_scale_v.gif) |
∑ R1(λ) |
∑ R2(λ) |
435 nm |
31.90 |
31.90 |
![](../images/435nm.BMP)
![](../images/435nm.BMP) |
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495 nm |
36.10 |
36.10 |
![](../images/495nm.BMP)
![](../images/495nm.BMP) |
545 nm |
39.10 |
39.10 |
![](../images/545nm.BMP)
![](../images/545nm.BMP) |
586 nm |
41.50 |
41.50 |
![](../images/586nm.BMP)
![](../images/586nm.BMP) |
649 nm |
44.30 |
44.30 |
![](../images/649nm.BMP)
![](../images/649nm.BMP) |
Calculated Relative Intensity Colors of Sugakiite in Air
Relative Intensity |
0% |
30% |
60% |
90% |
100% |
120% |
150% |
180% |
210% |
240% |
260% |
R1 |
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R2 |
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Calculated Properties of Sugakiite
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Electron Density: |
Bulk Density (Electron Density)=4.50 gm/cc note: Specific Gravity of Sugakiite =4.71 gm/cc. |
Fermion Index: |
Fermion Index = 0.01 Boson Index = 0.99 |
Photoelectric: |
PESugakiite = 24.69 barns/electron U=PESugakiite x rElectron Density= 111.15 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Sugakiite is Not Radioactive |
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Sugakiite Classification
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Dana Class: |
02.07.02.02 (02)Sulfides - Including Selenides and Tellurides |
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(02.07)where Am Bn Xp, with (m+n):p=9:8 |
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(02.07.02)Dana Group |
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02.07.02.01 Mackinawite (Fe,Ni)S0.9 P 4/nmm 4/m 2/m 2/m |
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02.07.02.02 Sugakiite! Cu(Fe,Ni)8S8 P 41/mnm 4/m 2/m 2/m |
Strunz Class: |
02.BB.15c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1) |
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02.BB -With Ni, Fe |
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02.BB.15c Sugakiite! Cu(Fe,Ni)8S8 P 41/mnm 4/m 2/m 2/m |
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Other Sugakiite Information
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References: |
NAME( AmMin, v93:1944) PHYS. PROP.(AmMin, v93:1944) OPTIC PROP.(AmMin, v93:1944) |
See Also: |
Links to other databases for Sugakiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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Print or Cut-and-Paste your Sugakiite Specimen Label here :
Sugakiite
Cu(Fe,Ni)8S8
Dana No: 02.07.02.02 Strunz No: 02.BB.15c
Locality:
Notes:
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