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Sturtite Mineral Data
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General Sturtite Information
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 Chemical Formula: |
(Fe3+)(Mn2+,Ca,Mg)Si4O10(OH)3•10(H2O) |
| Composition: |
Molecular Weight = 606.77 gm |
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Calcium 1.98 % Ca 2.77 % CaO |
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Magnesium 0.40 % Mg 0.66 % MgO |
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Manganese 5.43 % Mn 7.01 % MnO |
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Iron 9.20 % Fe 13.16 % Fe2O3 |
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Silicon 18.51 % Si 39.61 % SiO2 |
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Hydrogen 3.82 % H 34.14 % H2O |
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Oxygen 60.65 % O |
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______ ______ |
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100.00 % 97.36 % = TOTAL OXIDE |
| Empirical Formula: |
Fe3+Mn2+0.6Ca0.3Mg0.1Si4O10(OH)3•10(H2O) |
| Environment: |
An inadequately characterized mineral. Sturtite is now considered hisingerite or neotocite. |
| IMA Status: |
Discredited IMA 2006 |
| Locality: |
Broken Hill, New South Wales, Australia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for C. Sturt. |
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Sturtite Image |
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Images:
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Sturtite Crystallography
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| Crystal System: |
Amorphous- No Crystals |
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Physical Properties of Sturtite
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| Color: |
Black. |
| Density: |
2.05 |
| Hardness: |
3-3.5 - Calcite-Copper Penny |
| Luster: |
Vitreous - Greasy |
| Streak: |
yellowish brown |
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Optical Properties of Sturtite
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| Optical Data: |
NCalc= 1.53 - from Gladstone-Dale relationship (KC = 0.2609) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Sturtite
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| Electron Density: |
Bulk Density (Electron Density)=2.10 gm/cc
note: Specific Gravity of Sturtite =2.05 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PESturtite = 5.00 barns/electron
U=PESturtite x rElectron Density= 10.51 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sturtite is Not Radioactive |
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Sturtite Classification
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| Dana Class: |
78.00.00.00 (78)Unclassified Silicate Minerals |
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(78.00)Without Dana Classification Numbers |
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(78.00.00)Silicate, Unclassified |
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78.00.00.00 Almbosite? Fe5Fe4V4Si3O27 Ortho ? Ortho |
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78.00.00.00 Chelyabinskite* (Ca,Mg)3Si(OH)6(SO4,CO3)2•9(H2O) Unk Ortho |
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78.00.00.00 Cryptophyllite K2Ca[Si4O10]•5H2O P 21/n 2/m |
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78.00.00.00 IMA2007-041T Na2[Ti4O2(OH)2(SiO4)3]•6H2O R 3m 3m |
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78.00.00.00 IMA2009-001 Ba5(Ca,REE,Y)22(Ti,Nb)18(SiO4)4[(PO4),(SiO4)]4(BO3)9O22[(OH),F]43(H2O)1.5 R 3 3 |
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78.00.00.00 Iddingsite? MgO.Fe2O3.3SiO2•4(H2O) Ortho |
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78.00.00.00 Ivanyukite-Cu Cu[Ti4(OH)2O2(SiO4)3]•7H2O P 4 3m 4 3m |
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78.00.00.00 Ivanyukite-K K2[Ti4(OH)2O2(SiO4)3]•9H2O P 4 3m 4 3m |
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78.00.00.00 Ivanyukite-Na Na2[Ti4O2(OH)2(SiO4)3]•6H2O P 4 3m 4 3m |
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78.00.00.00 Plumbophyllite Pb2Si4O10•H2O P bcn 2/m 2/m 2/m |
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78.00.00.00 Sturtite? (Fe3)(Mn2,Ca,Mg)Si4O10(OH)3•10(H2O) None |
| Strunz Class: |
09.ED.10 09 - SILICATES (Germanates) |
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09.E - Phyllosilicates |
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09.ED -Phyllosilicates with kaolinite layers |
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09.ED.10 Endellite! Al2Si2O5(OH)4•2(H2O) Cc m |
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09.ED.10 Hisingerite Fe2Si2O5(OH)4•2(H2O) Unk Mono |
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09.ED.10 Halloysite Al2Si2O5(OH)4 Cc m |
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09.ED.10 Sturtite? (Fe3)(Mn2,Ca,Mg)Si4O10(OH)3•10(H2O) None |
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Other Sturtite Information
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| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Sturtite :
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 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info
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Print or Cut-and-Paste your Sturtite Specimen Label here :
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Sturtite
(Fe3+)(Mn2+,Ca,Mg)Si4O10(OH)3•10(H2O)
Dana No: 78.00.00.00 Strunz No: 09.ED.10
Locality:
Notes:
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