Daubreelite Mineral Data (original) (raw)
General Daubreelite Information
Chemical Formula:
Fe++Cr2S4
Composition:
Molecular Weight = 288.10 gm
Chromium 36.10 % Cr
Iron 19.38 % Fe
Sulfur 44.52 % S
______
100.00 %
Empirical Formula:
Fe2+Cr2S4
Environment:
In small amounts in many meteorites.
IMA Status:
Valid Species (Pre-IMA) 1876
Locality:
In iron meteorites, such as the Cosby's Creek, Toluca, Cranbourne, and Mundrabilla octahedrites, and the Coahuila, North Chile, and Scottsville hexahedrites. Link to MinDat.org Location Data.
Name Origin:
For Professor Gabriel Auguste Daubree (1814-1896), of Paris, France.
Name Pronunciation:
Daubreelite + Pronunciation 
Synonym:
ICSD 36251
PDF 4-651
Daubreelite Image
Images:
Images:
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Daubreelite Schollhornite Caswellsilverite Comments: Polished section (PPL) of schiillhornite (Sh), coexisting with caswellsilverite (Cw), ferromagnesian alabandite (Ab) and daubreelite (Db). (AmMin, v70:638). Location: Norton County (Kansas-Nebraska) enstatite achondrite meteorite.Scale: Scale bar is 0.08 mm. © American Mineralogist |
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Daubreelite Crystallography
Cell Dimensions:
a = 9.966, Z = 8; V = 989.83 Den(Calc)= 3.87
Crystal System:
Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m
X Ray Diffraction:
By Intensity(I/Io): 1.77(1), 3.02(0.8), 2.51(0.6),
Crystal Structure:
Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above
| | Riedel E , Karl R , Rackwitz R , Journal of Solid State Chemistry , 40 (1981) p.255-265, Mossbauer studies of thiospinels. V. The systems Cu1-xFexMe2S4 (Me=Cr,Rh) and, Cu1-xFexCr2(S.7Se.3)4, Locality: synthetic | | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Daubreelite
Color:
Black.
Density:
3.81
Diaphaneity:
Opaque
Fracture:
Brittle - Uneven - Very brittle fracture producing uneven fragments.
Hardness:
4.5-5 - Near Apatite
Luster:
Metallic
Streak:
brown black
Optical Properties of Daubreelite
Reflectivity
Standardized Intensity (100%) Reflection Spectra of Daubreelite in Air
| λ | R |  |
∑ R(λ) |
|---|---|---|---|
| 400 nm | 33.30 |  |
|
| 420 nm | 33.20 |  |
|
| 440 nm | 33.10 |  |
|
| 460 nm | 33.00 |  |
|
| 480 nm | 33.10 |  |
|
| 500 nm | 33.10 |  |
|
| 520 nm | 33.10 |  |
|
| 540 nm | 33.00 |  |
|
| 560 nm | 33.00 |  |
|
| 580 nm | 32.90 |  |
|
| 600 nm | 32.80 |  |
|
| 620 nm | 32.70 |  |
|
| 640 nm | 32.40 |  |
|
| 660 nm | 32.30 |  |
|
| 680 nm | 32.10 |  |
|
| 700 nm | 31.90 |  |
Calculated Relative Intensity Colors of Daubreelite in Air
| RelativeIntensity | 0% | 30% | 60% | 90% | 100% | 120% | 150% | 180% | 210% | 240% | 270% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| R |
Calculated Properties of Daubreelite
Electron Density:
Bulk Density (Electron Density)=3.71 gm/cc
note: Specific Gravity of Daubreelite =3.87 gm/cc.
Fermion Index:
Fermion Index = 0.04
Boson Index = 0.96
Photoelectric:
PEDaubreelite = 16.45 barns/electron
U=PEDaubreelite x rElectron Density= 60.97 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Daubreelite is Not Radioactive
Daubreelite Classification
Dana Class:
02.10.01.11 (02)Sulfides - Including Selenides and Tellurides
(02.10)where Am Bn Xp, with (m+n):p=3:4
(02.10.01)Linnaeite Group (Isometric: Fd3m)
02.10.01.01 Linnaeite CoCo2S4 F d3m 4/m 3 2/m
02.10.01.02 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m
02.10.01.03 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m
02.10.01.04 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m
02.10.01.05 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m
02.10.01.06 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m
02.10.01.07 Polydymite NiNi2S4 F d3m 4/m 3 2/m
02.10.01.08 Violarite FeNi2S4 F d3m 4/m 3 2/m
02.10.01.09 Trustedtite Ni3Se4 F d3m 4/m 3 2/m
02.10.01.10 Greigite FeFe2S4 F d3m 4/m 3 2/m
02.10.01.11 Daubreelite FeCr2S4 F d3m 4/m 3 2/m
02.10.01.12 Indite FeIn2S4 F d3m 4/m 3 2/m
02.10.01.13 Kalininite ZnCr2S4 F d3m 4/m 3 2/m
02.10.01.14 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m
02.10.01.15 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m
02.10.01.16 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m
02.10.01.17 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m
02.10.01.18 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m
02.10.01.19 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m
Strunz Class:
02.DA.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
02.D - Metal Sulfides, M:S = 3:4 and 2:3
02.DA -M:S = 3:4
02.DA.05 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m
02.DA.05 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m
02.DA.05 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m
02.DA.05 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m
02.DA.05 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m
02.DA.05 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m
02.DA.05 Dayingite* CuCoPtS4 F m3m 4/m 3 2/m
02.DA.05 Daubreelite FeCr2S4 F d3m 4/m 3 2/m
02.DA.05 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m
02.DA.05 Greigite FeFe2S4 F d3m 4/m 3 2/m
02.DA.05 Indite FeIn2S4 F d3m 4/m 3 2/m
02.DA.05 Linnaeite CoCo2S4 F d3m 4/m 3 2/m
02.DA.05 Kalininite ZnCr2S4 F d3m 4/m 3 2/m
02.DA.05 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m
02.DA.05 Polydymite NiNi2S4 F d3m 4/m 3 2/m
02.DA.05 Violarite FeNi2S4 F d3m 4/m 3 2/m
02.DA.05 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m
02.DA.05 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m
02.DA.05 Xingzhongite (Pb,Cu,Fe)(Ir,Pt,Rh)2S4 F d3m 4/m 3 2/m
02.DA.05 Trustedtite Ni3Se4 F d3m 4/m 3 2/m
02.DA.05 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m
Other Daubreelite Information
References:
NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)
See Also:
Links to other databases for Daubreelite :
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 Daubreelite Specimen Label here :
Daubreelite
Fe++Cr2S4
Dana No: 02.10.01.11 Strunz No: 02.DA.05
Locality:
Notes: