Krinovite Mineral Data

[Fine Minerals] [What's New] [Mineral Galleries] [My Collection] [Mineral Auctions]
Weinrich Minerals, Inc
Full-time professional mineral dealer with over 31 years experience in mineral collecting
And 15 years selling mineral specimens on the internet and at major mineral shows

General Krinovite Information

Chemical Formula:

NaMg2CrSi3O10

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

Empirical Formula:

NaMg₂CrSi₃O₁₀

Environment:

Subhedral grains in graphite nodules in octahedrites.

IMA Status:

Approved IMA 1968

Locality:

Canyon Diablo meteorite, Arizona. Link to MinDat.org Location Data.

Name Origin:

Named for Evgeny Leonidovich Krinov (1906-1984), Russian student of meteorites.

Name Pronunciation:

Krinovite + Pronunciation

Synonym:

ICSD 67231

PDF 20-1123

Search for Krinovite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Krinovite Crystallography

Axial Ratios:

a:b:c =0.962:1:0.825

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

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.501(1), 2.655(0.9), 2.893(0.8),

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

Bonaccorsi E , Merlino S , Pasero M , Zeitschrift fur Kristallographie , 187 (1989) p.133-138, The crystal structure of the meteoritic mineral krinovite, NaNaMg2CrSi3O10, Locality: Wichita County, USA

Physical Properties of Krinovite

Cleavage:

None

Color:

Dark green, Emerald green.

Density:

3.38

Diaphaneity:

Subtranslucent to Opaque

Habit:

Anhedral Grains - Granular minerals without the expression of crystal shapes

Habit:

Microscopic Crystals - Crystals visible only with microscopes.

Hardness:

6-7 - Orthoclase-Quartz

Luster:

Subadamantine

Streak:

greenish white

Optical Properties of Krinovite

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

Optical Data:

Biaxial (+), a=1.712, b=1.725, g=1.76, bire=0.0480, 2V(Calc)=64, 2V(Meas)=61.

Pleochroism (x):

yellow green.

Pleochroism (y):

blue green.

Pleochroism (z):

greenish black.

Calculated Properties of Krinovite

Electron Density:

Bulk Density (Electron Density)=3.40 gm/cc
note: Specific Gravity of Krinovite =3.45 gm/cc.

Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Photoelectric:

PE_Krinovite= 4.40 barns/electron
U=PE_Krinovite x rElectron Density= 14.93 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Krinovite is Not Radioactive

Krinovite Classification

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

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

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)

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

Search for Krinovite using:

[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Krinovite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Krinovite Mineral Data :

Ask about Krinovite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Krinovite

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

Notes: