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Periclase Mineral Data

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General Periclase Information

Help on Chemical  Formula: Chemical Formula: MgO
Help on Composition: Composition: Molecular Weight = 40.30 gm
   Magnesium  60.30 %  Mg  100.00 % MgO
   Oxygen     39.70 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: MgO
Help on Environment: Environment: Contact metamorphism of dolomites and magnesites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1840
Help on Locality: Locality: Monte Somma and Predazzo, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek peri - "around" and klao - "to cut."
Help on Name Pronunciation: Name Pronunciation: Periclase + Pronunciation Say PERICLASE
Help on Synonym: Synonym: ICSD 9863
  PDF 43-1022
 

Periclase Image

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  Periclase

Comments: Green nickel-rich periclase on matrix.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

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  Srebrodolskite   Periclase

Comments: Black grains of srebrodolskite with white periclase.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Periclase Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 4.203, Z = 4; V = 74.25 Den(Calc)= 3.61
Help on Crystal System: Crystal System: Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.106(1), 1.489(0.52), 1.216(0.12),
 

Physical Properties of Periclase

Help on Cleavage: Cleavage: {001} Perfect, {010} Perfect, {100} Perfect
Help on Color: Color: Brownish yellow, Colorless, Green, Gray white, Yellow.
Help on Density: Density: 3.67 - 3.9, Average = 3.78
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luminescence: Luminescence: Non-Fluorescent, Long UV=light yellow.
Help on Luster: Luster: Vitreous (Glassy)
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Periclase

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.022 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.025 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.205,KPDmeas= 0.1955,KC= 0.2
Ncalc = 1.72 - 1.78
Help on Optical Data: Optical Data: Isotropic, n=1.74.
 

Calculated Properties of Periclase

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.76 gm/cc
note: Specific Gravity of Periclase =3.79 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEPericlase = 1.33 barns/electron
U=PEPericlase x rElectron Density= 4.99 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Periclase is Not Radioactive
 

Periclase Classification

Help on  Dana Class: Dana Class: 04.02.01.01 (04)Simple Oxides
  (04.02)with a cation charge of 2+ (A++ O)
  (04.02.01)Periclase group (Isometric, Fm3m)
 
04.02.01.01 Periclase MgO F m3m 4/m 3 2/m
 
04.02.01.02 Bunsenite NiO F m3m 4/m 3 2/m
 
04.02.01.03 Manganosite MnO F m3m 4/m 3 2/m
 
04.02.01.04 Monteponite CdO F m3m 4/m 3 2/m
 
04.02.01.05 Lime CaO F m3m 4/m 3 2/m
 
04.02.01.06 Wustite FeO F m3m 4/m 3 2/m
 
04.02.01.07 Hongquiite* TiO F m3m 4/m 3 2/m
Help on  Strunz Class: Strunz Class: 04.AB.25 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.A - Metal:Oxygen = 2.1 and 1:1
  04.AB -M:O = 1:1 (and up to 1:1.25); with small to medium-sized cations only
 
04.AB.25 Bunsenite NiO F m3m 4/m 3 2/m
 
04.AB.25 Lime CaO F m3m 4/m 3 2/m
 
04.AB.25 Monteponite CdO F m3m 4/m 3 2/m
 
04.AB.25 Manganosite MnO F m3m 4/m 3 2/m
 
04.AB.25 Periclase MgO F m3m 4/m 3 2/m
 
04.AB.25 Wustite FeO F m3m 4/m 3 2/m
 

Other Periclase Information

Help on References: References: NAME( Duda&Rejl90) 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 Periclase :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - University of Colorado - Mineral Structure Data
17 - WWW-MINCRYST

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Periclase

MgO
Dana No: 04.02.01.01 Strunz No: 04.AB.25
Locality:

 

Notes:

 

 
   
 


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