Trevorite Mineral Data

Advertisment

McDougall Minerals is based near famous Bancroft, Ontario, at the heart of one of the best mineral regions in Canada

General Trevorite Information

Chemical Formula:

NiFe+++2O4

Composition:

Molecular Weight = 231.86 gm

Magnesium 0.42 % Mg 0.70 % MgO

Aluminum 0.12 % Al 0.22 % Al₂O₃

Iron 55.16 % Fe 9.30 % FeO / 68.53 % Fe₂O₃

Nickel 16.71 % Ni 21.26 % NiO

Oxygen 27.60 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ni_0.66Fe²⁺_0.3Mg_0.04Fe³⁺_1.99Al_0.01O₄

Environment:

In a small tabular body of nickeliferous serpentinite, probably a contact deposit, along the junction of quartzite and an ultramafic intrusive.

IMA Status:

Valid Species (Pre-IMA) 1921

Locality:

Found three km west of the Scotia talc mine, Bon Accord area, Barberton, Transvaal, South Africa. Link to MinDat.org Location Data.

Name Origin:

Named for Major Tudor Gruffydd Trevor, mining inspector for the Pretoria District, Transvaal, South Africa.

Name Pronunciation:

Trevorite + Pronunciation

Synonym:

ICSD 67846

PDF 10-325

Trevorite Image

Images:

Trevorite Willemseite

Comments: Small trevorite crystal in massive willemseite.
Location: Bon Accord, Barberton Mountain, Mpumalanga, South Africa. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Trevorite Willemseite

Comments: Waxy translucent green willemseite with black trevorite in schistose rock.
Location: Near Scotia Talc Mine, Barberton Mountain, Transvaal, Mpumalanga, South Africa. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Trevorite Crystallography

Cell Dimensions:

a = 8.41, Z = 8; V = 594.82 Den(Calc)= 5.18

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.513(1), 1.476(0.4), 1.605(0.3),

Forms:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

Forms: ( 1 1 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.

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

Blesa M C , Amador U , Moran E , Menendez N , Tornero J D , Rodriguez-Carvajal J , Solid State Ionics , 63 (1993) p.429-436, Synthesis and characterization of nickel and magnesium ferrites obtained from, alpha-NaFeO2, Locality: synthetic

Physical Properties of Trevorite

Cleavage:

None

Color:

Black.

Density:

5.165

Diaphaneity:

Opaque

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Hardness:

5 - Apatite

Luster:

Metallic

Streak:

black

Optical Properties of Trevorite

Optical Data:

NCalc= 2.41 - from Gladstone-Dale relationship (KC = 0.2726) where Ncalc=Dcalc*KC+1
NCalc= 2.41 - from Gladstone-Dale relationship (KC = 0.2726) where Ncalc=Dmeas*KC+1

Calculated Properties of Trevorite

Electron Density:

Bulk Density (Electron Density)=4.94 gm/cc
note: Specific Gravity of Trevorite =5.18 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Trevorite= 23.61 barns/electron
U=PE_Trevorite x rElectron Density= 116.72 barns/cc.

Radioactivity:

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

Trevorite Classification

Dana Class:

07.02.02.05 (07)Multiple Oxides

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

(07.02.02)(Iron subgroup)

07.02.02.01 Magnesioferrite MgFe2O4 F d3m 4/m 3 2/m

07.02.02.02 Jacobsite (Mn,Fe,Mg)(Fe,Mn)2O4 F d3m 4/m 3 2/m

07.02.02.03 Magnetite FeFe2O4 F d3m 4/m 3 2/m

07.02.02.04 Franklinite (Zn,Mn,Fe)(Fe,Mn)2O4 F d3m 4/m 3 2/m

07.02.02.05 Trevorite NiFe2O4 F d3m 4/m 3 2/m

07.02.02.06 Cuprospinel (Cu,Mg)Fe2O4 F d3m 4/m 3 2/m

07.02.02.07 Brunogeierite (Ge,Fe)Fe2O4 F d3m 4/m 3 2/m

Strunz Class:

04.BB.05 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.05 Cochromite (Co,Ni,Fe)(Cr,Al)2O4 F d3m 4/m 3 2/m

04.BB.05 Filipstadite (Mn,Mg)4SbFeO8 pseudo ISO 2/m 2/m 2/m

04.BB.05 Magnetite FeFe2O4 F d3m 4/m 3 2/m

04.BB.05 Gahnite ZnAl2O4 F d3m 4/m 3 2/m

04.BB.05 Chromite FeCr2O4 F d3m 4/m 3 2/m

04.BB.05 Galaxite (Mn,Mg)(Al,Fe)2O4 F d3m 4/m 3 2/m

04.BB.05 Cuprospinel (Cu,Mg)Fe2O4 F d3m 4/m 3 2/m

04.BB.05 Donathite? (Fe,Mg)(Cr,Fe)2O4 P 4/nnm 4/m 2/m 2/m

04.BB.05 Brunogeierite (Ge,Fe)Fe2O4 F d3m 4/m 3 2/m

04.BB.05 Coulsonite FeV2O4 F d3m 4/m 3 2/m

04.BB.05 Hercynite FeAl2O4 F d3m 4/m 3 2/m

04.BB.05 Franklinite (Zn,Mn,Fe)(Fe,Mn)2O4 F d3m 4/m 3 2/m

04.BB.05 Jacobsite (Mn,Fe,Mg)(Fe,Mn)2O4 F d3m 4/m 3 2/m

04.BB.05 Magnesiochromite MgCr2O4 F d3m 4/m 3 2/m

04.BB.05 Magnesioferrite MgFe2O4 F d3m 4/m 3 2/m

04.BB.05 Magnesiocoulsonite MgV2O4 F d3m 4/m 3 2/m

04.BB.05 Manganochromite (Mn,Fe)(Cr,V)2O4 F d3m 4/m 3 2/m

04.BB.05 Qandilite (Mg,Fe)2(Ti,Fe,Al)O4 F d3m 4/m 3 2/m

04.BB.05 Nichromite (Ni,Co,Fe)(Cr,Fe,Al)2O4 F d3m 4/m 3 2/m

04.BB.05 Spinel MgAl2O4 F d3m 4/m 3 2/m

04.BB.05 Ulvospinel TiFe2O4 F d3m 4/m 3 2/m

04.BB.05 Zincochromite ZnCr2O4 F d3m 4/m 3 2/m

04.BB.05 Trevorite NiFe2O4 F d3m 4/m 3 2/m

04.BB.05 Vuorelainenite (Mn,Fe)(V,Cr)2O4 F d3m 4/m 3 2/m

Other Trevorite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Trevorite :
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

Search for Trevorite using:

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

Visit our Advertisers for Trevorite :

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

Ask about Trevorite 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 Trevorite Specimen Label here :

Trevorite

NiFe+++2O4
Dana No: 07.02.02.05 Strunz No: 04.BB.05
Locality:

Notes: