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Kamiokite Mineral Data
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General Kamiokite Information
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 Chemical Formula: |
Fe2Mo3O8 |
| Composition: |
Molecular Weight = 527.51 gm |
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Iron 21.17 % Fe 27.24 % FeO |
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Molybdenum 54.56 % Mo 72.76 % MoO2 |
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Oxygen 24.26 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+2Mo3O8 |
| Environment: |
In quartz-molybdenite stockwork veins associated with granite porphyry dikes. |
| IMA Status: |
Approved IMA 1985 |
| Locality: |
Kamioka Ag-Pb-Zn mine, Gifu Prefecture, Japan. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Kamiokite + Pronunciation  |
| Synonym: |
ICSD 61069 |
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PDF 36-526 |
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Kamiokite Image |
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Images:
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Kamiokite Crystallography
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| Axial Ratios: |
a:c = 1:1.73867 |
| Cell Dimensions: |
a = 5.782, c = 10.053, Z = 2; V = 291.06 Den(Calc)= 6.02 |
| Crystal System: |
Hexagonal - Dihexagonal Pyramidal H-M Symbol (6mm) Space Group: P 63mc |
| X Ray Diffraction: |
By Intensity(I/Io): 5.03(1), 3.55(0.9), 2.509(0.75), |
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Physical Properties of Kamiokite
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| Cleavage: |
{0001} Perfect |
| Color: |
Iron black. |
| Density: |
5.96 |
| Diaphaneity: |
Opaque |
| Fracture: |
Even - Flat surfaces (not cleavage) fractured in an even pattern. |
| Habit: |
Hexagonal - Six-sided crystal shape in cross-section or habit. |
| Habit: |
Tabular - Form dimensions are thin in one direction. |
| Hardness: |
4.5 - Between Fluorite and Apatite |
| Luster: |
Sub Metallic |
| Streak: |
black |
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Optical Properties of Kamiokite
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| Optical Data: |
Uniaxial (-). |
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NCalc= 1.31 - from Gladstone-Dale relationship (KC = 0.0512) where Ncalc=Dcalc*KC+1
NCalc= 1.31 - from Gladstone-Dale relationship (KC = 0.0512) where Ncalc=Dmeas*KC+1
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| RL Anisotrophism: |
Strong, light brownish gray to dark greenish gray. |
| RL Bireflectance: |
Strong, gray to olive-gray. |
| RL Color: |
Gray with an olive tint. |
| Reflectivity |
Standardized Intensity (100%) Reflection Spectra of Kamiokite in Air
| λ |
R1 |
R2 |
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∑ R1(λ) |
∑ R2(λ) |
| 400 nm |
19.00 |
25.40 |
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| 420 nm |
18.60 |
25.00 |
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| 440 nm |
18.20 |
24.60 |
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| 460 nm |
17.80 |
24.20 |
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| 480 nm |
17.40 |
23.80 |
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| 500 nm |
17.10 |
23.50 |
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| 520 nm |
16.80 |
23.20 |
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| 540 nm |
16.60 |
23.00 |
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| 560 nm |
16.40 |
22.70 |
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| 580 nm |
16.10 |
22.50 |
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| 600 nm |
15.90 |
22.30 |
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| 620 nm |
15.80 |
22.20 |
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| 640 nm |
15.80 |
22.30 |
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| 660 nm |
15.90 |
22.40 |
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| 680 nm |
16.00 |
22.60 |
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| 700 nm |
16.30 |
22.70 |
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Calculated Relative Intensity Colors of Kamiokite in Air
Relative
Intensity |
0% |
60% |
100% |
120% |
180% |
240% |
300% |
360% |
420% |
480% |
540% |
| R1 |
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| R2 |
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Calculated Properties of Kamiokite
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| Electron Density: |
Bulk Density (Electron Density)=5.52 gm/cc
note: Specific Gravity of Kamiokite =6.02 gm/cc.
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| Fermion Index: |
Fermion Index = 0.14
Boson Index = 0.86 |
| Photoelectric: |
PEKamiokite = 97.61 barns/electron
U=PEKamiokite x rElectron Density= 539.14 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Kamiokite is Not Radioactive |
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Kamiokite Classification
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| Dana Class: |
07.06.03.01 (07)Multiple Oxides |
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(07.06)where A (B)4 X9 |
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(07.06.03)Dana Group |
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07.06.03.01 Kamiokite Fe2Mo3O8 P 63mc 6mm |
| Strunz Class: |
04.CB.40 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate |
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04.C - Metal:Oxygen = 2:3, 3:5, and Similar |
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04.CB -With medium-sized cations |
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04.CB.40 Kamiokite Fe2Mo3O8 P 63mc 6mm |
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04.CB.40 Nolanite (V,Fe,Fe,Ti)10O14(OH)2 P 63mc 6mm |
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04.CB.40 Rinmanite! (Zn,Mn)2Sb2Mg2Fe4O14(OH)2 P 63mc 6mm |
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Other Kamiokite Information
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| References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3) |
| See Also: |
Links to other databases for Kamiokite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST
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Print or Cut-and-Paste your Kamiokite Specimen Label here :
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Kamiokite
Fe2Mo3O8
Dana No: 07.06.03.01 Strunz No: 04.CB.40
Locality:
Notes:
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