Clinoenstatite Mineral Data

General Clinoenstatite Information

Help on Chemical  Formula: Chemical Formula: Mg2Si2O6
Help on Composition: Composition: Molecular Weight = 200.78 gm
   Magnesium  24.21 %  Mg   40.15 % MgO
   Silicon    27.98 %  Si   59.85 % SiO2
   Oxygen     47.81 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg2Si2O6
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1906
Help on Locality: Locality: Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the monoclinic polymorph of enstatite.
Help on Synonym: Synonym: Clinohypersthene
  ICSD 71835
  PDF 35-610
 

Clinoenstatite Image

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Clinoenstatite

Comments: Crystalline massive clinoenstatite.
Location: Cape Vogel, Papua New Guinea. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinoenstatite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0898:1:0.5863
Help on Cell Dimensions: Cell Dimensions: a = 9.6065, b = 8.8146, c = 5.1688, Z = 4; beta = 108.335° V = 415.46 Den(Calc)= 3.21
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.88(1), 2.98(0.95), 3.17(0.6),
Click Here for Large Clinoenstatite Structure Window Crystal Structure:

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Tribaudino M , Nestola F , Camara F , Domeneghetti M C , American Mineralogist , 87 (2002) p.648-657

View Additional jPOWD Structure files for Clinoenstatite
[1] [2] [3] [4] [5] [6] [7] [8]
 

Physical Properties of Clinoenstatite

Help on Cleavage: Cleavage: [???] Perfect, [???] Indistinct
Help on Color: Color: Colorless, Green, Greenish yellow, Yellow brown.
Help on Density: Density: 3.2 - 3.6, Average = 3.4
Help on Diaphaniety: Diaphaniety: Transparent to translucent to opaque
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Columnar - Forms columns
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 5-6 - Between Apatite and Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: greenish gray
 

Optical Properties of Clinoenstatite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.059 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.004 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.204,KPDmeas= 0.1926,KC= 0.2048
Help on Optical Data: Optical Data: Biaxial (+), a=1.651, b=1.654, g=1.66, bire=0.0090
 

Calculated Properties of Clinoenstatite

Help on Electron Density: Electron Density:

relectron=3.20 gm/cc
note: rClinoenstatite =3.21 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.0375
Boson Index = 0.9625
Help on Photoelectric: Photoelectric:

PEClinoenstatite = 1.61 barns/electron
U=PEClinoenstatite x relectron= 5.15 barns/cc.

Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Clinoenstatite is Not Radioactive

 

Clinoenstatite Classification

Help on  Dana Class: Dana Class: 65.1.1.1 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.1)with chains P=2
  (65.1.1)P2/c clinopyroxenes
 
65.1.1.1 Clinoenstatite Mg2Si2O6 P 21/c 2/m
 
65.1.1.2 Clinoferrosilite (Fe,Mg)2Si2O6 P 21/c 2/m
 
65.1.1.3 Kanoite (Mn,Mg)2Si2O6 P 21/c 2/m
 
65.1.1.4 Pigeonite (Mg,Fe,Ca)(Mg,Fe)Si2O6 P 21/c 2/m
Help on  Strunz Class: Strunz Class: VIII/F.01-10 VIII - Silicates
  VIII/F - Inosilicates (chain and band) double chains [Si2O6]4-
  VIII/F.01 - Pyroxene group, Clinopyroxene
 
VIII/F.01-10 Clinoenstatite Mg2Si2O6 P 21/c 2/m
 
VIII/F.01-20 Clinoferrosilite (Fe,Mg)2Si2O6 P 21/c 2/m
 
VIII/F.01-30 Kanoite (Mn,Mg)2Si2O6 P 21/c 2/m
 
VIII/F.01-40 Pigeonite (Mg,Fe,Ca)(Mg,Fe)Si2O6 P 21/c 2/m
 
VIII/F.01-50 Diopside CaMgSi2O6 C 2/c 2/m
 
VIII/F.01-60 Hedenbergite CaFeSi2O6 C 2/c 2/m
 
VIII/F.01-70 Johannsenite CaMnSi2O6 C 2/c 2/m
 
VIII/F.01-80 Petedunnite Ca(Zn,Mn,Fe,Mg)Si2O6 C 2/c 2/m
 
VIII/F.01-90 Augite (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 C 2/c 2/m
 
VIII/F.01-100 Omphacite (Ca,Na)(Mg,Fe,Al)Si2O6 P 2/n 2/m
 
VIII/F.01-110 Esseneite CaFeAlSiO6 C 2/c 2/m
 
VIII/F.01-120 Spodumene LiAlSi2O6 C 2/c 2/m
 
VIII/F.01-130 Jadeite Na(Al,Fe)Si2O6 C 2/c 2/m
 
VIII/F.01-140 Aegirine NaFeSi2O6 C 2/c 2/m
 
VIII/F.01-145 Namansilite NaMn(Si2O6) C 2/c 2/m
 
VIII/F.01-150 Jervisite (Na,Ca,Fe)(Sc,Mg,Fe)Si2O6 C 2/c 2/m
 
VIII/F.01-160 Natalyite Na(V,Cr)Si2O6 C 2/c 2/m
 
VIII/F.01-170 Kosmochlor NaCrSi2O6 C 2/c 2/m
 

Other Clinoenstatite Information

Help on References: References: NAME( Dana8) 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 Clinoenstatite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 - Mineral and Gemstone Kingdom 13 -Mineralienatlas (Deutsch) 14 -QUT Mineral Atlas 15 - WWW-MINCRYST 16 -École des Mines de Paris

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Clinoenstatite

Mg2Si2O6
Dana No: 65.1.1.1 Strunz No: VIII/F.01-10
Locality:

 

Notes:

 

 
   
 
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