Komarovite Mineral Data (original) (raw)

General Komarovite Information

Help on Chemical Formula: Chemical Formula:

(Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O)

Help on Composition: Composition:

Molecular Weight = 502.73 gm

Sodium 0.91 % Na 1.23 % Na2O

Calcium 3.19 % Ca 4.46 % CaO

Titanium 1.90 % Ti 3.18 % TiO2

Manganese 4.37 % Mn 5.64 % MnO

Niobium 33.26 % Nb 47.59 % Nb2O5

Silicon 11.17 % Si 23.90 % SiO2

Hydrogen 1.40 % H 12.54 % H2O

Oxygen 42.65 % O

Fluorine 1.13 % F 1.13 % F

- % F -0.48 % -O=F2

______ ______

100.00 % 99.20 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ca0.4Mn2+0.4Na0.2Nb1.8Ti0.2(Si2O7)O2.9F0.3�3.5(H2O)

Help on Environment: Environment:

In alkalic syenites.

Help on IMA Status: IMA Status:

Approved IMA 1971

Help on Locality: Locality:

Mt. Karnasurt, Lovozero massif, Kola peninsula, Russia. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Vladimir M. Komarov (1927-1967), Russian cosmonaut, who was killed during his return flight on April, 23, 1967.

Help on Name Pronunciation: Name Pronunciation:

Komarovite + Pronunciation Say KOMAROVITE

Help on Synonym: Synonym:

Ellsworthite

Silicified pyrochlore

Komarovite Image

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

Komarovite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =1.5142:1:1.2278

Help on Cell Dimensions: Cell Dimensions:

a = 21.2, b = 14, c = 17.19, Z = 18; V = 5,101.99 Den(Calc)= 2.95

Help on Crystal System: Crystal System:

OrthorhombicSpace Group: Unk

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 3.16(1), 12.2(0.7), 1.783(0.47),

Physical Properties of Komarovite

Help on Cleavage: Cleavage:

{001} Good

Help on Color: Color:

White, Light brown, Light pink.

Help on Density: Density:

3.61 - 3.76, Average = 3.68

Help on Diaphaneity: Diaphaneity:

Transparent to Translucent

Help on Habit: Habit:

Foliated - Two dimensional platy forms.

Help on Habit: Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Help on Habit: Habit:

Platy - Sheet forms (e.g. micas).

Help on Hardness: Hardness:

4 - Fluorite

Help on Luminescence: Luminescence:

Non-fluorescent.

Help on Luster: Luster:

Adamantine

Help on Magnetism: Magnetism:

Nonmagnetic

Help on Streak: Streak:

white

Optical Properties of Komarovite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= 0.163 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.045 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2673,KPDmeas= 0.214,KC= 0.2557
Ncalc = 1.75 - 1.96

Help on Optical Data: Optical Data:

Biaxial (+), a=1.75, b=1.766, g=1.85, bire=0.1000

Calculated Properties of Komarovite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.86 gm/cc
note: Specific Gravity of Komarovite =2.95 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0079306422
Boson Index = 0.9920693578

Help on Photoelectric: Photoelectric:

PEKomarovite = 50.93 barns/electron
U=PEKomarovite x rElectron Density= 145.42 barns/cc.

Help on Radioactivity: Radioactivity:

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

Komarovite Classification

Help on Dana Class: Dana Class:

56.02.04.12 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O

(56.02)with cations in [4] and/or >[4] coordination

(56.02.04)Cuspidine - Wohlerite group

56.02.04.01 Baghdadite Ca3(Zr,Ti)Si2O9 P 21/a 2/m

56.02.04.02 Burpalite Na2CaZrSi2O7F2 P 21/a 2/m

56.02.04.03 Cuspidine Ca4Si2O7(F,OH)2 P 21/c 2/m

56.02.04.04 Lavenite (Na,Ca)2(Mn,Fe)(Zr,Ti,Nb)Si2O7(O,OH,F) P 21/a 2/m

56.02.04.05 Wohlerite NaCa2(Zr,Nb)Si2O7(O,OH,F)2 P 21/m 2/m

56.02.04.06 Niocalite Ca14Nb2(Si2O7)4O6F2 Pa m

56.02.04.07 Hiortdahlite (Ca,Na,Y)3(Zr,Ti)Si2O7(F,O,OH)2 P1 1

56.02.04.08 Rosenbuschite (Ca,Na)3(Zr,Ti)Si2O8F P1 1

56.02.04.09 Hainite Na4Ca8(Ti,Zr,Mn,Fe)3Si8O28F8 P1 1

56.02.04.10 Janhaugite (Na,Ca)3(Mn,Fe)3(Ti,Zr,Nb)2Si4O15(OH,F,O)3 P 21/n 2/m

56.02.04.11 Jennite Ca9Si6O18(OH)6•8H2O P1 1

56.02.04.12 Komarovite (Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O) Unk Ortho

56.02.04.13 Natrokomarovite* Na6CaNb6[Si4O12F2•4(H2O) C mmm 2/m 2/m 2/m

56.02.04.14 Suolunite Ca2Si2O5(OH)2•(H2O) F dd2 mm2

56.02.04.15 Mongolite Ca4Nb6Si5O24(OH)10•5(H2O) Unk Tetra

56.02.04.16 Kristiansenite! Ca2ScSn(Si2O7)(Si2O6OH) C1 1

56.02.04.17 Kochite! Na2(Na,Ca)4Ca4(Mn,Ca)2Zr2Ti2(Si2O7)4(O,F)4F4 P1 1

56.02.04.18 Marianoite! Na2Ca4(Nb,Zr)2(Si2O7)2(O,F)4 P 21 2/m

Help on Strunz Class: Strunz Class:

09.CE.45 09 - SILICATES (Germanates)

09.C - Cyclosilicates

09.CE -[Si4O12]8- 4-membered single rings (vierer-Einfachringe),

09.CE.45 Komarovite (Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O) Unk Ortho

09.CE.45 Natrokomarovite* Na6CaNb6[Si4O12F2•4(H2O) C mmm 2/m 2/m 2/m

Other Komarovite 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 Komarovite :
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

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

Komarovite

(Ca,Mn)2(Nb,Ti)2Si2O7(O,F)2•3.5(H2O)
Dana No: 56.02.04.12 Strunz No: 09.CE.45
Locality:

Notes: