Mineralogy Database

Sturtite Mineral Data

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General Sturtite Information

Help on Chemical  Formula: Chemical Formula: (Fe3+)(Mn2+,Ca,Mg)Si4O10(OH)3•10(H2O)
Help on Composition: Composition: Molecular Weight = 606.77 gm
   Calcium     1.98 %  Ca    2.77 % CaO
   Magnesium   0.40 %  Mg    0.66 % MgO
   Manganese   5.43 %  Mn    7.01 % MnO
   Iron        9.20 %  Fe   13.16 % Fe2O3
   Silicon    18.51 %  Si   39.61 % SiO2
   Hydrogen    3.82 %  H    34.14 % H2O
   Oxygen     60.65 %  O
             ______        ______ 
             100.00 %       97.36 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+Mn2+0.6Ca0.3Mg0.1Si4O10(OH)3•10(H2O)
Help on Environment: Environment: An inadequately characterized mineral. Sturtite is now considered hisingerite or neotocite.
Help on IMA Status: IMA Status: Discredited IMA 2006
Help on Locality: Locality: Broken Hill, New South Wales, Australia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for C. Sturt.
 

Sturtite Image

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  Sturtite

Comments: Dark red-brown resinous massive sturtite.
Location: North Mine, Broken Hill, New South Wales, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sturtite Crystallography

Help on Crystal System: Crystal System: Amorphous- No Crystals
 

Physical Properties of Sturtite

Help on Color: Color: Black.
Help on Density: Density: 2.05
Help on Hardness: Hardness: 3-3.5 - Calcite-Copper Penny
Help on Luster: Luster: Vitreous - Greasy
Help on Streak: Streak: yellowish brown
 

Optical Properties of Sturtite

Help on Optical Data: Optical Data: NCalc= 1.53 - from Gladstone-Dale relationship (KC = 0.2609) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Sturtite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.10 gm/cc
note: Specific Gravity of Sturtite =2.05 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PESturtite = 5.00 barns/electron
U=PESturtite x rElectron Density= 10.51 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sturtite is Not Radioactive
 

Sturtite Classification

Help on  Dana Class: Dana Class: 78.00.00.00 (78)Unclassified Silicate Minerals
  (78.00)Without Dana Classification Numbers
  (78.00.00)Silicate, Unclassified
 
78.00.00.00 Almbosite? Fe5Fe4V4Si3O27 Ortho ? Ortho
 
78.00.00.00 Chelyabinskite* (Ca,Mg)3Si(OH)6(SO4,CO3)2•9(H2O) Unk Ortho
 
78.00.00.00 Cryptophyllite K2Ca[Si4O10]•5H2O P 21/n 2/m
 
78.00.00.00 IMA2007-041T Na2[Ti4O2(OH)2(SiO4)3]•6H2O R 3m 3m
 
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
 
78.00.00.00 Iddingsite? MgO.Fe2O3.3SiO2•4(H2O) Ortho
 
78.00.00.00 Ivanyukite-Cu Cu[Ti4(OH)2O2(SiO4)3]•7H2O P 4 3m 4 3m
 
78.00.00.00 Ivanyukite-K K2[Ti4(OH)2O2(SiO4)3]•9H2O P 4 3m 4 3m
 
78.00.00.00 Ivanyukite-Na Na2[Ti4O2(OH)2(SiO4)3]•6H2O P 4 3m 4 3m
 
78.00.00.00 Plumbophyllite Pb2Si4O10•H2O P bcn 2/m 2/m 2/m
 
78.00.00.00 Sturtite? (Fe3)(Mn2,Ca,Mg)Si4O10(OH)3•10(H2O) None
Help on  Strunz Class: Strunz Class: 09.ED.10 09 - SILICATES (Germanates)
  09.E - Phyllosilicates
  09.ED -Phyllosilicates with kaolinite layers
 
09.ED.10 Endellite! Al2Si2O5(OH)4•2(H2O) Cc m
 
09.ED.10 Hisingerite Fe2Si2O5(OH)4•2(H2O) Unk Mono
 
09.ED.10 Halloysite Al2Si2O5(OH)4 Cc m
 
09.ED.10 Sturtite? (Fe3)(Mn2,Ca,Mg)Si4O10(OH)3•10(H2O) None
 

Other Sturtite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: 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 :

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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