Ottensite Mineral Data

General Ottensite Information

Chemical Formula:

Na3(Sb2O3)3(SbS3)•3H2O

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 %

Empirical Formula:

Na_2.89K_0.03(Sb2O3)_3.03Sb_0.93S_2.793(OH)_0.13

Environment:

Supergene product of stibnite weathering. Na-dominant analogue of cetineite.

IMA Status:

Approved IMA 2006 (Dana # Added)

Locality:

Qinglong Sb-deposit, Quinglong County, Guizhou Province, People�s Republic of China Link to MinDat.org Location Data.

Name Origin:

Named for Berthold Ottens (b 1942), , mineral collector and dealer from Spiegelau, Germany.

Synonym:

IMA2006-014

Ottensite Image

Images:

Ottensite

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

Axial Ratios:

a:c = 1:0.393

Cell Dimensions:

a = 14.1758, c = 5.5712, Z = 2; V = 969.56 Den(Calc)= 4.16

Crystal System:

Hexagonal - Pyramidal H-M Symbol (6) Space Group: P 6₃

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

By Intensity(I/I_o): 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

Cleavage:

None

Color:

Reddish brown.

Diaphaneity:

Translucent

Fracture:

Brittle - Irregular - Very brittle fracture producing irregular fragments

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

3.5 - Copper Penny

Luster:

Adamantine

Streak:

yellow brown

Optical Properties of Ottensite

Gladstone-Dale:

CI calc= -0.186 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.238,KC= 0.2007
Ncalc = 1.83

Optical Data:

Uniaxial (?), a=1.99, b=1.99, bire=0.0000.

Calculated Properties of Ottensite

Electron Density:

Bulk Density (Electron Density)=3.70 gm/cc
note: Specific Gravity of Ottensite =4.16 gm/cc.

Fermion Index:

Fermion Index = 0.000632418
Boson Index = 0.999367582

Photoelectric:

PE_Ottensite= 232.36 barns/electron
U=PE_Ottensite x r_electron= 859.34 barns/cc.

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

Dana Class:

02.13.03.02 (02)Sulfides - Including Selenides and Tellurides

(02.13)(Oxysulfides)

(02.13.03)Dana Group

02.13.03.01 Cetineite (K,Na)3x(Sb2O3)3(Sb2S3)(OH)x•(2.8-x)(H2O) P 6₃ 6

02.13.03.02 Ottensite! Na3(Sb2O3)3(SbS3)•3H2O P 6₃ 6

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

References:

NAME( MinRec, Jan07) PHYS. PROP.(MinRec, Jan07) OPTIC PROP.(MinRec, Jan07)

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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Print or Cut-and-Paste your Ottensite Specimen Label here :

Ottensite

Na3(Sb2O3)3(SbS3)•3H2O
Dana No: 02.13.03.02 Strunz No: 02.MA.05
Locality:

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