Oldhamite Mineral Data

Oldhamite Mineral Data
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General Oldhamite Information

Help on Chemical Formula: Chemical Formula: (Ca,Mg,Fe)S
Help on Composition: Composition: Molecular Weight = 72.14 gm
   Calcium    50.00 %  Ca
   Magnesium   1.68 %  Mg
   Iron        3.87 %  Fe
   Sulfur     44.45 %  S
             ______ 
             100.00 % 
Help on Empirical Formula: Empirical Formula: Ca0.9Mg0.05Fe2+0.05S
Help on Environment: Environment: Fills the intersticies between silicates in enstatite chondrite and achondrite meteorites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1862
Help on Locality: Locality: Bustee meteorite, Gorakhpur, Basti distr., Uttar Pradesh, India. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Thomas Oldham (1816-1878), Director of the Indian Geologial Survey (185o-1876).
Help on Name Pronunciation: Name Pronunciation: Oldhamite + Pronunciation Say OLDHAMITE
Help on Synonym: Synonym: ICSD 60200
  PDF 8-464
 

Oldhamite Image

Click Here for Larger Oldhamite Image in a New Browser Window Images:
Click Here for Larger Oldhamite Image

Oldhamite

Comments: Brown crystalline oldhamite grains in anhydrite.
Location: Ronneburg, Thuringen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Oldhamite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 5.686, Z = 4; V = 183.83 Den(Calc)= 2.61
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.846(1), 2.013(0.7), 1.6439(0.21),
Click Here for Large Oldhamite Structure Window 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


Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, rocksalt structure

 

Physical Properties of Oldhamite

Help on Cleavage: Cleavage: {001} Good
Help on Color: Color: Light brown, Dark brown.
Help on Density: Density: 2.58
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Hardness: Hardness: 4 - Fluorite
Help on Luster: Luster: Sub Metallic
 

Optical Properties of Oldhamite

Help on Optical Data: Optical Data: Isotropic, n=2.137.
 

Calculated Properties of Oldhamite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.60 gm/cc
note: Specific Gravity of Oldhamite =2.61 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0065135547
Boson Index = 0.9934864453
Help on Photoelectric: Photoelectric: PEOldhamite = 9.62 barns/electron
U=PEOldhamite x rElectron Density= 24.98 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Oldhamite is Not Radioactive
 

Oldhamite Classification
Help on Dana Class: Dana Class: 02.08.01.05 (02)Sulfides - Including Selenides and Tellurides
  (02.08)where Am Bn Xp, with (m+n):p=1:1
  (02.08.01)Galena Group (Isometric: Fm3m)
 
02.08.01.01 Galena PbS F m3m 4/m 3 2/m
 
02.08.01.02 Clausthalite PbSe F m3m 4/m 3 2/m
 
02.08.01.03 Altaite PbTe F m3m 4/m 3 2/m
 
02.08.01.04 Alabandite MnS F m3m 4/m 3 2/m
 
02.08.01.05 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m
 
02.08.01.06 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m
 
02.08.01.07 Borovskite Pd3SbTe4 F m3m 4/m 3 2/m
 
02.08.01.08 Crerarite (Pt,Pb)Bi3(S,Se)4-x(x~0.7) F m3m 4/m 3 2/m
 
02.08.01.09 Keilite! (Fe,Mn,Mg,Ca,Cr)S F m3m 4/m 3 2/m
Help on Strunz Class: Strunz Class: 02.CD.10 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.C - Metal Sulfides, M:S = 1:1 (and similar)
  02.CD -With Sn, Pb, Hg, etc.
 
02.CD.10 Alabandite MnS F m3m 4/m 3 2/m
 
02.CD.10 Altaite PbTe F m3m 4/m 3 2/m
 
02.CD.10 Galena PbS F m3m 4/m 3 2/m
 
02.CD.10 Clausthalite PbSe F m3m 4/m 3 2/m
 
02.CD.10 Niningerite (Mg,Fe,Mn)S F m3m 4/m 3 2/m
 
02.CD.10 Oldhamite (Ca,Mg,Fe)S F m3m 4/m 3 2/m
 
02.CD.10 Keilite! (Fe,Mn,Mg,Ca,Cr)S F m3m 4/m 3 2/m
 

Other Oldhamite Information
Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Oldhamite :
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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Oldhamite

(Ca,Mg,Fe)S
Dana No: 02.08.01.05 Strunz No: 02.CD.10
Locality:

 

Notes: