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.
Help on IMA Status: IMA Status: Not Approved IMA
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:

relectron=2.10 gm/cc
note: rSturtite =2.05 gm/cc.

Help on Fermion Index Fermion Index Fermion Index = 0.01132
Boson Index = 0.98868
Help on Photoelectric: Photoelectric:

PESturtite = 5.00 barns/electron
U=PESturtite x relectron= 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: 78.0.0.0 (78)Unclassified Silicate Minerals
  (78.0)Without Dana Classification Numbers
  (Silicate, Unclassified)
Help on  Strunz Class: Strunz Class: VIII/H.26-70 VIII - Silicates
  VIII/H - Phyllosilicates (layered) Mica like with [Si4O10]4- and related groups
  VIII/H.26 - Allophane - Sturtite series
 
VIII/H.26-10 Allophane Al2O3·(SiO2)1.3-2·((H2O))2.5-3 None
 
VIII/H.26-30 Imogolite Al2SiO3(OH)4 ? Mono
 
VIII/H.26-40 Odinite (Fe,Mg,Al,Fe,Ti,Mn)2.5(Si,Al)2O5(OH)4 Cm m
 
VIII/H.26-50 Hisingerite Fe2Si2O5(OH)4·2(H2O) Unk Mono
 
VIII/H.26-60 Neotocite (Mn,Fe)SiO3·(H2O)(?) None
 
VIII/H.26-70 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 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Sturtite

(Fe3+)(Mn2+,Ca,Mg)Si4O10(OH)3·10(H2O)
Dana No: Unknown Strunz No: VIII/H.26-70
Locality:

 

Notes:

 

 
   
 
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