Mineralogy Database

Krinovite Mineral Data

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General Krinovite Information

Help on Chemical  Formula: Chemical Formula: NaMg2CrSi3O10
Help on Composition: Composition: Molecular Weight = 367.85 gm
   Sodium      6.25 %  Na    8.42 % Na2O
   Magnesium  13.21 %  Mg   21.91 % MgO
   Chromium   14.14 %  Cr   18.48 % CrO
   Silicon    22.91 %  Si   49.00 % SiO2
   Oxygen     43.49 %  O
             ______        ______ 
             100.00 %       97.83 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaMg2CrSi3O10
Help on Environment: Environment: Subhedral grains in graphite nodules in octahedrites.
Help on IMA Status: IMA Status: Approved IMA 1968
Help on Locality: Locality: Canyon Diablo meteorite, Arizona. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Evgeny Leonidovich Krinov (1906-1984), Russian student of meteorites.
Help on Name Pronunciation: Name Pronunciation: Krinovite + Pronunciation Say KRINOVITE
Help on Synonym: Synonym: ICSD 67231
  PDF 20-1123
 

Krinovite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.962:1:0.825
Help on Cell Dimensions: Cell Dimensions: a = 10.238, b = 10.642, c = 8.78, Z = 4; alpha = 105.5°, beta = 96.5°, gamma = 125.15° V = 748.87 Den(Calc)= 3.26
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.501(1), 2.655(0.9), 2.893(0.8),
 

Physical Properties of Krinovite

Help on Cleavage: Cleavage: None
Help on Color: Color: Dark green, Emerald green.
Help on Density: Density: 3.38
Help on Diaphaneity: Diaphaneity: Subtranslucent to Opaque
Help on Habit: Habit: Anhedral Grains - Granular minerals without the expression of crystal shapes
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Hardness: Hardness: 6-7 - Orthoclase-Quartz
Help on Luster: Luster: Subadamantine
Help on Streak: Streak: greenish white
 

Optical Properties of Krinovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.088 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.066 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2123,KPDmeas= 0.2167,KC= 0.1991
Ncalc = 1.67 - 1.69
Help on Optical Data: Optical Data: Biaxial (+), a=1.712, b=1.725, g=1.76, bire=0.0480, 2V(Calc)=64, 2V(Meas)=61.
Help on Pleochroism (x): Pleochroism (x): yellow green.
Help on Pleochroism (y): Pleochroism (y): blue green.
Help on Pleochroism (z): Pleochroism (z): greenish black.
 

Calculated Properties of Krinovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.40 gm/cc
note: Specific Gravity of Krinovite =3.45 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEKrinovite = 4.40 barns/electron
U=PEKrinovite x rElectron Density= 14.93 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Krinovite is Not Radioactive
 

Krinovite Classification

Help on  Dana Class: Dana Class: 69.02.01a.04 (69)Inosilicate Chains with Side Branches or Loops
  (69.02)with P>2
  (69.02.01a)Aenigmatite and related species (Aenigmatite subgroup)
 
69.02.01a.01 Aenigmatite (Na,Ca)4(Fe,Ti,Mg)12Si12O40 P1 1
 
69.02.01a.02 Dorrite Ca2Mg2Fe4(Al,Fe)4Si2O20 P1,P 1 Tri
 
69.02.01a.03 Hogtuvaite (Ca,Na)2(Fe,Fe,Ti,Mg,Mn)6(Si,Be,Al)6O20 P1 1
 
69.02.01a.04 Krinovite NaMg2CrSi3O10 P1 1
 
69.02.01a.05 Rhonite Ca2(Mg,Fe,Fe,Ti)6(Si,Al)6O20 P1 1
 
69.02.01a.06 Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 P1 1
 
69.02.01a.07 Welshite Ca4Mg9Sb3O4[Si6Be3AlFe2O36] P1 1
 
69.02.01a.08 Wilkinsonite Na2Fe4Fe2Si6O20 P1 1
 
69.02.01a.09 Makarochkinite! Ca2Fe4FeTiSi4BeAlO20 P1 1
Help on  Strunz Class: Strunz Class: 09.DH.45 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DH -Inosilicates with 4-periodic single chains, Si4O12
 
09.DH.45 Aenigmatite (Na,Ca)4(Fe,Ti,Mg)12Si12O40 P1 1
 
09.DH.45 Dorrite Ca2Mg2Fe4(Al,Fe)4Si2O20 P1,P 1 Tri
 
09.DH.45 Krinovite NaMg2CrSi3O10 P1 1
 
09.DH.45 Rhonite Ca2(Mg,Fe,Fe,Ti)6(Si,Al)6O20 P1 1
 
09.DH.45 Sapphirine (Mg,Al)8(Al,Si)6O20 P1 1
 
09.DH.45 Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 P1 1
 
09.DH.45 Khmaralite! (Mg,Al,Fe)16(Al,Si,Be)12O40 P 21/c 2/m
 
09.DH.45 Makarochkinite! Ca2Fe4FeTiSi4BeAlO20 P1 1
 
09.DH.45 Welshite Ca4Mg9Sb3O4[Si6Be3AlFe2O36] P1 1
 
09.DH.45 Wilkinsonite Na2Fe4Fe2Si6O20 P1 1
 

Other Krinovite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Krinovite :
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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Krinovite

NaMg2CrSi3O10
Dana No: 69.02.01a.04 Strunz No: 09.DH.45
Locality:

 

Notes:

 

 
   
 


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