Hematite Mineral Data

Hematite Mineral Data
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General Hematite Information

Help on Chemical Formula: Chemical Formula: Fe2O3
Help on Composition: Composition: Molecular Weight = 159.69 gm
   Iron    69.94 %  Fe  100.00 % Fe2O3
   Oxygen  30.06 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+2O3
Help on Environment: Environment: Magmatic, hydrothermal, metamorphic and sedimentary.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) Prehistoric
Help on Locality: Locality: Matto Grosso, Brazil. Mesabi iron ore range, Minnesota, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek, haimatites, "bloodlike'" in allusion to vivid red color of the powder.
Help on Name Pronunciation: Name Pronunciation: Hematite Say HEMATITE
Help on Synonym: Synonym: ICSD 64599
  Kidney Ore
  Martite
  PDF 33-664
  Specularite
 

Hematite Image

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Hematite

Comments: Black, platy hematite and minor white magnesite.
Location: Brumado, Bahia, Brazil. Scale: 9 x 4.5 cm.
© Fabre Minerals
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Hematite   Defernite

Comments: Specular hematite rich with crystalline grains of reddish brown defernite.
Location: Kombat Mine, Kombat, Grootfontein District, Otjozondjupa Region, Namibia. Scale: 3.9 x 2.5 cm.
© John Veevaert
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Hematite   Rutile

Comments: Acicular, golden yellow crystals of rutile epitaxially overgrown on black crystals of hematite. The overgrowths are perpendicular to the trigonal crystallography of the hematite.
Location: Novo Horizonte, Bahia Brazil. Scale: 4 x 3.5 x 3 cm.
© Fabre Minerals

Hematite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.73009
Help on Cell Dimensions: Cell Dimensions: a = 5.0317, c = 13.737, Z = 6; V = 301.20 Den(Calc)= 5.28
Help on Crystal System: Crystal System: Trigonal - Hexagonal ScalenohedralH-M Symbol (3 2/m) Space Group: R 3c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.69(1), 1.69(0.6), 2.51(0.5),
Help on Forms: Forms:

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Forms: ( 0 0 1) ( 1 0 1)

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Blake R L , Hessevick R E , Zoltai T , Finger L W , American Mineralogist , 51 (1966) p.123-129, Refinement of the hematite structure

View Additional jPOWD Structure files for Hematite
[1]
 

Physical Properties of Hematite

Help on Cleavage: Cleavage: None
Help on Color: Color: Reddish gray, Black, Blackish red.
Help on Density: Density: 5.3
Help on Diaphaneity: Diaphaneity: Subtranslucent to opaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 6.5 - Pyrite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Metallic
Help on Magnetism: Magnetism: Magnetic after heating
Help on Streak: Streak: reddish brown
 

Optical Properties of Hematite

Help on Dichroism (e): Dichroism (e): yellowish red.
Help on Dichroism (w): Dichroism (w): brownish red.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.225 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.23 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.3873,KPDmeas= 0.3858,KC= 0.315
Ncalc = 2.66 - 2.67
Help on Optical Data: Optical Data: Uniaxial (-), e=2.87-2.94, w=3.15-3.22, bire=0.2800.
Help on RL Color: RL Color: White to gray white, with a bluish tint, with deep blood-red internal reflections.
Help on Reflectivity Reflectivity
Standardized Intensity (100%) Reflection Spectra of Hematite in Air
λ R1 R2  ∑ R1(λ)   ∑ R2(λ) 
 400 nm   32.00   34.50 
   
 420 nm   31.00   34.00 
 440 nm   30.00   33.50 
 460 nm   29.10   32.70 
 480 nm   28.40   32.20 
 500 nm   27.80   31.60 
 520 nm   27.20   31.00 
 540 nm   27.00   30.60 
 560 nm   26.80   30.40 
 580 nm   26.40   30.00 
 600 nm   25.50   29.20 
 620 nm   24.80   28.30 
 640 nm   24.10   27.50 
 660 nm   23.50   26.70 
 680 nm   23.10   26.10 
 700 nm   22.80   25.60 
Calculated Relative Intensity Colors of Hematite in Air
Relative
Intensity		    0%   40%   80% 100% 120% 160% 200% 240% 280% 320% 350%
R1                      
R2                      
 

Calculated Properties of Hematite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.04 gm/cc
note: Specific Gravity of Hematite =5.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEHematite = 21.37 barns/electron
U=PEHematite x rElectron Density= 107.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hematite is Not Radioactive
 

Hematite Classification
Help on Dana Class: Dana Class: 04.03.01.02 (04)Simple Oxides
  (04.03)with a cation charge of 3+ (A+++2 O3)
  (04.03.01)Corundum-Hematite group (Rhombohedral: R-3c)
 
04.03.01.01 Corundum Al2O3 R 3c 3 2/m
 
04.03.01.02 Hematite Fe2O3 R 3c 3 2/m
 
04.03.01.03 Eskolaite Cr2O3 R 3c 3 2/m
 
04.03.01.04 Karelianite V2O3 R 3c 3 2/m
 
04.03.01.05 Tistarite! Ti2O3 R 3c 3 2/m
Help on Strunz Class: Strunz Class: 04.CB.05 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.C - Metal:Oxygen = 2:3, 3:5, and Similar
  04.CB -With medium-sized cations
 
04.CB.05 Auroantimonate* AuSbO3 Ortho ? Ortho
 
04.CB.05 Geikielite MgTiO3 R 3 3
 
04.CB.05 Brizziite-III NaSbO3 R 3 3
 
04.CB.05 Brizziite-VII NaSbO3 R 3 3
 
04.CB.05 Ecandrewsite (Zn,Fe,Mn)TiO3 R 3 3
 
04.CB.05 Corundum Al2O3 R 3c 3 2/m
 
04.CB.05 Eskolaite Cr2O3 R 3c 3 2/m
 
04.CB.05 Hematite Fe2O3 R 3c 3 2/m
 
04.CB.05 Karelianite V2O3 R 3c 3 2/m
 
04.CB.05 Ilmenite FeTiO3 R 3 3
 
04.CB.05 Melanostibite Mn(Sb,Fe)O3 R 3 3
 
04.CB.05 Pyrophanite MnTiO3 R 3 3
 
04.CB.05 Romanite* (Fe,U,Pb)2(Ti,Fe)O4 Trig ? Trig
 
04.CB.05 Tistarite! Ti2O3 R 3c 3 2/m
 

Other Hematite Information
Help on References: References: NAME( Sinkankas66) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic3)
Help on See Also: See Also: Links to other databases for Hematite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Amethyst Galleries' Mineral Gallery
5 - Athena
6 - EUROmin Project
7 - Ecole des Mines de Paris
8 - Franklin Minerals(Dunn)
9 - Franklin Minerals(Palache)
10 - GeoScienceWorld
11 - Glendale Community College
12 - Google Images
13 - Google Scholar
14 - Handbook of Mineralogy (MinSocAm)
15 - Handbook of Mineralogy (UofA)
16 - HyperPhysics
17 - MinDAT
18 - Mineral and Gemstone Kingdom
19 - Mineralienatlas (Deutsch)
20 - Online Mineral Museum
21 - Philatelic Mineralogy
22 - Philatelic Mineralogy
23 - QUT Mineral Atlas
24 - Ruff.Info
25 - Scandinavian mineral gallery
26 - Tradeshop.com - The Rainbow of Gems
27 - University of Colorado - Mineral Structure Data
28 - WWW-MINCRYST
29 - YupRocks
30 - theimage

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Ask about Hematite here :
Ask-A-Mineralogist from the Mineralogical Society of America
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Hematite Specimen Label here :

Hematite

Fe2O3
Dana No: 04.03.01.02 Strunz No: 04.CB.05
Locality:

 

Notes: