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Heideite Mineral Data
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General Heideite Information
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 Chemical Formula: |
(Fe,Cr)1+x(Ti,Fe)2S4 |
| Composition: |
Molecular Weight = 292.66 gm |
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Titanium 27.81 % Ti |
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Chromium 3.55 % Cr |
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Iron 24.81 % Fe |
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Sulfur 43.83 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Fe2+Cr0.2Ti1.7Fe2+0.3S4 |
| Environment: |
In meteorites recovered on Earth. |
| IMA Status: |
Approved IMA 1974 |
| Locality: |
Bustee enstatite achondrite meteor. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Fritz Heide (1891-1973), meteoriticist of Jana, Germany. |
| Name Pronunciation: |
Heideite  |
| Synonym: |
ICSD 42563 |
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PDF 20-1303 |
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Heideite Crystallography
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| Axial Ratios: |
a:b:c =1.7456:1:3.3333 |
| Cell Dimensions: |
a = 5.97, b = 3.42, c = 11.4, Z = 2; beta = 90.2° V = 232.76 Den(Calc)= 4.18 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: I2/m |
| X Ray Diffraction: |
By Intensity(I/Io): 2.06(1), 1.72(0.75), 2.64(0.75), |
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Physical Properties of Heideite
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| Cleavage: |
None |
| Color: |
Steel gray. |
| Density: |
4.1 |
| Diaphaneity: |
Opaque |
| Habit: |
Anhedral Grains - Granular minerals without the expression of crystal shapes |
| Hardness: |
3.5-4.5 - Between Copper Penny and Fluorite-Apatite |
| Luster: |
Metallic |
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Optical Properties of Heideite
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| RL Color: |
Creamy white. |
| RL Pleochroism: |
Moderately strong, from purple-gray to cream-gray. |
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Calculated Properties of Heideite
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| Electron Density: |
Bulk Density (Electron Density)=4.00 gm/cc
note: Specific Gravity of Heideite =4.18 gm/cc.
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| Fermion Index: |
Fermion Index = 0.04
Boson Index = 0.96 |
| Photoelectric: |
PEHeideite = 15.30 barns/electron
U=PEHeideite x rElectron Density= 61.21 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Heideite is Not Radioactive |
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Heideite Classification
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| Dana Class: |
02.10.02.03 (02)Sulfides - Including Selenides and Tellurides |
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(02.10)where Am Bn Xp, with (m+n):p=3:4 |
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(02.10.02)Wilkmanite Group |
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02.10.02.01 Wilkmanite Ni3Se4 I2/m 2/m |
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02.10.02.02 Brezinaite Cr3S4 I2/m 2/m |
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02.10.02.03 Heideite (Fe,Cr)1x(Ti,Fe)2S4 I2/m 2/m |
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02.10.02.04 Kingstonite! (Rh,Ir,Pt)3S4 C 2/m 2/m |
| Strunz Class: |
02.DA.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.D - Metal Sulfides, M:S = 3:4 and 2:3 |
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02.DA -M:S = 3:4 |
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02.DA.15 Brezinaite Cr3S4 I2/m 2/m |
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02.DA.15 Heideite (Fe,Cr)1x(Ti,Fe)2S4 I2/m 2/m |
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02.DA.15 Wilkmanite Ni3Se4 I2/m 2/m |
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Other Heideite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Heideite :
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
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Print or Cut-and-Paste your Heideite Specimen Label here :
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Heideite
(Fe,Cr)1+x(Ti,Fe)2S4
Dana No: 02.10.02.03 Strunz No: 02.DA.15
Locality:
Notes:
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