IMA2002-009a Mineral Data

IMA2002-009a Mineral Data

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General IMA2002-009a Information

Chemical Formula:

Ca2Fe++4Fe+++TiSi4BeAlO20

Composition:

Molecular Weight = 875.59 gm

Calcium 9.15 % Ca 12.81 % CaO

Titanium 5.47 % Ti 9.12 % TiO₂

Beryllium 1.03 % Be 2.86 % BeO

Aluminum 3.08 % Al 5.82 % Al₂O₃

Iron 31.89 % Fe 32.82 % FeO / 9.12 % Fe₂O₃

Silicon 12.83 % Si 27.45 % SiO₂

Oxygen 36.55 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₂Fe²⁺₄Fe³⁺TiSi₄BeAlO₂₀

Environment:

Aenigmatite group

IMA Status:

Proposed IMA 2003 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

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IMA2002-009a Crystallography

Axial Ratios:

a:b:c =0.9631:1:0.8253

Cell Dimensions:

a = 10.3549, b = 10.7508, c = 8.8732, Z = 2; alpha = 105.707°, beta = 96.227°, gamma = 124.861° V = 775.66 Den(Calc)= 3.75

Crystal System:

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

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

By Intensity(I/I_o): 2.53(1), 2.676(0.77), 2.924(0.69),8(0.57), 2.075(0.39), 3.12(0.32), 4.78(0.29), 2.41(0.28),

Physical Properties of IMA2002-009a

Color:

Black.

Diaphaniety:

Opaque

Luster:

Vitreous (Glassy)

Optical Properties of IMA2002-009a

Optical Data:

Biaxial (?), a=1.799, g=1.86, bire=0.0610

Calculated Properties of IMA2002-009a

Electron Density:

r_electron=2.85 gm/cc
note: r_IMA2002-009a=2.94 gm/cc.

Fermion Index

Fermion Index = 0.03041
Boson Index = 0.96959

Photoelectric:

PE_IMA2002-009a= 12.20 barns/electron
U=PE_IMA2002-009a x r_electron= 34.81 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

IMA2002-009a is Not Radioactive

IMA2002-009a Classification

Dana Class:

69.2.1a.9 (69)Inosilicate Chains with Side Branches or Loops

(69.2)with P>2

(69.2.1a)Aenigmatite and related species (Aenigmatite subgroup)

69.2.1a.1 Aenigmatite Na2Fe5TiSi6O20 P1 1

69.2.1a.2 Dorrite Ca2Mg2Fe4(Al,Fe)4Si2O20 P1,P 1 Tri

69.2.1a.3 Hogtuvaite (Ca,Na)2(Fe,Fe,Ti,Mg,Mn)6(Si,Be,Al)6O20 P1 1

69.2.1a.4 Krinovite NaMg2CrSi3O10 P1 1

69.2.1a.5 Rhonite Ca2(Mg,Fe,Fe,Ti)6(Si,Al)6O20 P1 1

69.2.1a.6 Serendibite Ca2(Mg,Al)6(Si,Al,B)6O20 P1 1

69.2.1a.7 Welshite Ca2Mg4(Mn,Fe)Sb2O2[Si3Be2O18] P1 1

69.2.1a.8 Wilkinsonite Na2Fe4Fe2Si6O20 P1 1

69.2.1a.9 IMA2002-009a ! Ca2Fe4FeTiSi4BeAlO20 P1 1

Strunz Class:

VIII/FX.00-00 VIII - Silicates

VIII/FX - Unclassified Strunz Inosilicates

VIII/FX.00 - Aenigmatite group

Other IMA2002-009a Information

See Also:

Links to other databases for IMA2002-009a :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch)

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Print or Cut-and-Paste your IMA2002-009a Specimen Label here :

IMA2002-009a

Ca2Fe++4Fe+++TiSi4BeAlO20
Dana No: 69.2.1a.9 Strunz No: VIII/FX.00-00
Locality:

Notes: