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Ottensite Mineral Data

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General Ottensite Information

Help on Chemical  Formula: Chemical Formula: Na3(Sb2O3)3(SbS3)•3H2O
Help on Composition: Composition: Molecular Weight = 1,214.40 gm
   Potassium   0.10 %  K
   Sodium      5.47 %  Na
   Antimony   70.08 %  Sb
   Hydrogen    0.53 %  H
   Sulfur      7.37 %  S
   Oxygen     16.46 %  O
             100.00 % 
Help on Empirical Formula: Empirical Formula: Na2.89K0.03(Sb2O3)3.03Sb0.93S2.793(OH)0.13
Help on Environment: Environment: Supergene product of stibnite weathering. Na-dominant analogue of cetineite.
Help on IMA Status: IMA Status: Approved IMA 2006 (Dana # Added)
Help on Locality: Locality: Qinglong Sb-deposit, Quinglong County, Guizhou Province, People�s Republic of China Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Berthold Ottens (b 1942), , mineral collector and dealer from Spiegelau, Germany.
Help on Synonym: Synonym: IMA2006-014

Ottensite Image

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Comments: Red-brown crusts of ottensite on stibnite.
Location: Qinglong (Dachang) Sb-Au deposit, Qinglong Co., Qianxi'nan Autonomous Prefecture, Guizhou Province, China. Scale: Specimen size 5.2 x 3.0 x 2.9 cm.
© Rob Lavinsky

Ottensite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.393
Help on Cell Dimensions: Cell Dimensions: a = 14.1758, c = 5.5712, Z = 2; V = 969.56 Den(Calc)= 4.16
Help on Crystal System: Crystal System: Hexagonal - Pyramidal H-M Symbol (6) Space Group: P 63
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.906(1), 2.991(0.77), 12.29(0.6),3.406(0.57), 4.13(0.52), 1.4842(0.51), 2.679(0.51), 4.64(0.51),

Physical Properties of Ottensite

Help on Cleavage: Cleavage: None
Help on Color: Color: Reddish brown.
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Irregular - Very brittle fracture producing irregular fragments
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luster: Luster: Adamantine
Help on Streak: Streak: yellow brown

Optical Properties of Ottensite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= -0.186 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.238,KC= 0.2007
Ncalc = 1.83
Help on Optical Data: Optical Data: Uniaxial (?), a=1.99, b=1.99, bire=0.0000.

Calculated Properties of Ottensite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.70 gm/cc
note: Specific Gravity of Ottensite =4.16 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.000632418
Boson Index = 0.999367582
Help on Photoelectric: Photoelectric: PEOttensite = 232.36 barns/electron
U=PEOttensite x relectron= 859.34 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 1.23 (Gamma Ray American Petroleum Institute Units)
Concentration of Ottensite per GRapi unit = 81.45 (%)

Estimated Radioactivity from Ottensite - barely detectable


Ottensite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.13.03)Dana Group Cetineite (K,Na)3x(Sb2O3)3(Sb2S3)(OH)x•(2.8-x)(H2O) P 63 6 Ottensite! Na3(Sb2O3)3(SbS3)•3H2O P 63 6
Help on  Strunz Class: Strunz Class: 02.MA.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.M -
  02.MA -Oxysulfosalts of Alkalies and Alkali Earths
02.MA.05 Cetineite (K,Na)3x(Sb2O3)3(Sb2S3)(OH)x•(2.8-x)(H2O) P 63 6
02.MA.05 Ottensite! Na3(Sb2O3)3(SbS3)•3H2O P 63 6

Other Ottensite Information

Help on References: References: NAME( MinRec, Jan07) PHYS. PROP.(MinRec, Jan07) OPTIC PROP.(MinRec, Jan07)
Help on See Also: See Also: Links to other databases for Ottensite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 02.MA.05





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