Xieite Mineral Data

General Xieite Information

Chemical Formula:

FeCr2O4

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

Empirical Formula:

Fe²⁺_0.87Mg_0.13Mn²⁺_0.01Cr_1.62Al_0.25Ti_0.08V⁵⁺_0.02O₄

Environment:

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

IMA Status:

Approved IMA 2007 (Dana # Added)

Locality:

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

Name Origin:

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

Synonym:

IMA2007-056

Search for Xieite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Xieite Crystallography

Axial Ratios:

a:b:c =0.9895:1:0.3049

Cell Dimensions:

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

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/I_o): 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

Optical Data:

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

Calculated Properties of Xieite

Electron Density:

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

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

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

Radioactivity:

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

Xieite Classification

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

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

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

Search for Xieite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Xieite :

A Bijoux Google Search for Xieite
Adam's Minerals Google Search for Xieite
Cape Minerals Google Search for Xieite
Dakota Matrix Minerals Google Search for Xieite
Excalibur Mineral Corp. Google Search for Xieite
Exceptional Minerals Google Search for Xieite
John Betts Fine Minerals Search for Xieite
McDougall Minerals Google Search for Xieite
Mineral News Website Link
Rock and Mineral Shows Google Search for Xieite
Weinrich Minerals, Inc. Google Search for Xieite

Ask about Xieite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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: