IMA2004-030 Mineral Data

IMA2004-030 Mineral Data

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General IMA2004-030 Information

Chemical Formula:

[ ]Li2(Fe++3Al2)S5(Si8O22)(OH)2

Composition:

Molecular Weight = 846.07 gm

Lithium 1.64 % Li 3.53 % Li₂O

Aluminum 6.38 % Al 12.05 % Al₂O₃

Iron 19.80 % Fe 25.48 % FeO

Silicon 26.56 % Si 56.81 % SiO₂

Hydrogen 0.24 % H 2.13 % H₂O

Oxygen 45.38 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Li₂Fe²⁺₃Al₂Si₈O₂₂(OH)₂

IMA Status:

Proposed IMA 2004 (Dana # Added)

Locality:

Greenbushes, Western Australia Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

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IMA2004-030 Crystallography

Axial Ratios:

a:b:c =1.0343:1:0.2985

Cell Dimensions:

a = 18.287, b = 17.68, c = 5.278, Z = 4; V = 1,706.45 Den(Calc)= 3.29

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P nma

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

By Intensity(I/I_o): 8.11(1), 3(0.48), 4.42(0.26),2.797(0.17), 2.648(0.14), 3.62(0.13), 2.536(0.11),

Optical Properties of IMA2004-030

Optical Data:

NCalc= 1.69 - from Gladstone-Dale relationship (KC = 0.2091) where Ncalc=Dcalc*KC+1

Calculated Properties of IMA2004-030

Electron Density:

r_electron=3.24 gm/cc
note: r_IMA2004-030=3.29 gm/cc.

Fermion Index

Fermion Index = 0.01804
Boson Index = 0.98196

Photoelectric:

PE_IMA2004-030= 7.08 barns/electron
U=PE_IMA2004-030 x r_electron= 22.92 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

IMA2004-030 is Not Radioactive

IMA2004-030 Classification

Dana Class:

66.1.2.12 (66)Inosilicate Double-Width Unbranched Chains, W=2

(66.1)Dana Type

(66.1.2)Group 1, the Mg-Fe-Mn-Li amphiboles (Orthorhombic)

66.1.2.1 Magnesioanthophyllite? (Mg,Fe)7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.2 Anthophyllite []Mg7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.2a Protoanthophyllite! (Mg,Fe)7Si8O22(OH)2 Pnmn 2/m 2/m 2/m

66.1.2.3 Ferro-anthophyllite []Fe7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.3a Protoferro-anthophyllite! (Fe,Mn)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m

66.1.2.3b Protomangano-ferro-anthophyllite! (Mn,Fe)2(Fe,Mg)5(Si4O11)2(OH)2 Pnmn 2/m 2/m 2/m

66.1.2.4 Sodicanthophyllite NaMg7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.4a Sodic-ferro-anthophyllite! NaFe7Si8O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.5 Magnesiogedrite? (Mg,Fe)5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.6 Gedrite []Mg5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.7 Ferrogedrite []Fe5Al2Si6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.7a Sodic-ferrogedrite! NaFe6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.8 Sodicgedrite NaMg6AlSi6Al2O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.9 Magnesioholmquistite Li2(Mg,Fe)3Al2Si8O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.10 Holmquistite [](Li2Mg3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.11 Ferroholmquistite [](Li2Fe3Al2)Si8O22(OH)2 P nma 2/m 2/m 2/m

66.1.2.12 IMA2004-030 ! []Li2(Fe3Al2)S5(Si8O22)(OH)2 P nma 2/m 2/m 2/m

Strunz Class:

VIII/FX.00-00 VIII - Silicates

VIII/FX - Unclassified Strunz Inosilicates

VIII/FX.00 - Group 1, the Mg-Fe-Mn-Li amphi

Other IMA2004-030 Information

See Also:

Links to other databases for IMA2004-030 :
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 IMA2004-030 Specimen Label here :

IMA2004-030

[ ]Li2(Fe++3Al2)S5(Si8O22)(OH)2
Dana No: 66.1.2.12 Strunz No: VIII/FX.00-00
Locality:

Notes: