Xieite Mineral Data (original) (raw)

General Xieite Information

Help on Chemical Formula: Chemical Formula:

FeCr2O4

Help on Composition: Composition:

Molecular Weight = 212.12 gm

Magnesium 1.49 % Mg 2.47 % MgO

Titanium 1.81 % Ti 3.01 % TiO2

Manganese 0.26 % Mn 0.33 % MnO

Aluminum 3.18 % Al 6.01 % Al2O3

Vanadium 0.48 % V 0.86 % V2O5

Chromium 39.71 % Cr 51.93 % CrO

Iron 22.91 % Fe 29.47 % FeO

Oxygen 30.17 % O

______ ______

100.00 % 94.08 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Fe2+0.87Mg0.13Mn2+0.01Cr1.62Al0.25Ti0.08V5+0.02O4

Help on Environment: Environment:

Occurs in the shock vein. High pressure polymorph of chromite. Potential deep mantle mineral. Spinel group.

Help on IMA Status: IMA Status:

Approved IMA 2007 (Dana # Added)

Help on Locality: Locality:

Suizhou L6 chondrite: Dayanpo, Suizhou County, Hubei Province, China. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Xie Xiande, a GIG mineralogist who has made major contribution to the field of mineral shock effects.

Help on Synonym: Synonym:

IMA2007-056

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Xieite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.9895:1:0.3049

Help on Cell Dimensions: Cell Dimensions:

a = 9.462, b = 9.562, c = 2.916, Z = 4; V = 263.83 Den(Calc)= 5.34

Help on Crystal System: Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Bbmm

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.65(1), 1.953(0.9), 1.566(0.6),1.337(0.4), 2.389(0.2), 1.425(0.15), 1.439(0.15), 2.089(0.1),

Optical Properties of Xieite

Help on Optical Data: Optical Data:

NCalc= 2.03 - from Gladstone-Dale relationship (KC = 0.1931) where Ncalc=Dcalc*KC+1

Calculated Properties of Xieite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=5.07 gm/cc
note: Specific Gravity of Xieite =5.34 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Help on Photoelectric: Photoelectric:

PEXieite = 16.65 barns/electron
U=PEXieite x rElectron Density= 84.48 barns/cc.

Help on Radioactivity: Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Xieite is Not Radioactive

Xieite Classification

Help on Dana Class: Dana Class:

07.02.15.01 (07)Multiple Oxides

(07.02)(A+ B++)2 X4 Spinel group

(07.02.15)Dana Group

07.02.15.01 Xieite! FeCr2O4 Bbmm 2/m 2/m 2/m

Help on Strunz Class: Strunz Class:

04.BB.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate

04.B - Metal:Oxygen = 3:4 and similar

04.BB -With only medium-sized cations

04.BB.25 Xieite! FeCr2O4 Bbmm 2/m 2/m 2/m

Other Xieite Information

Help on See Also: See Also:

Links to other databases for Xieite :
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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Ask about Xieite here :
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Print or Cut-and-Paste your Xieite Specimen Label here :

Xieite

FeCr2O4
Dana No: 07.02.15.01 Strunz No: 04.BB.25
Locality:

Notes: