Mineralogy Database

Sidpietersite Mineral Data

Search Webmineral :

General Sidpietersite Information

Help on Chemical  Formula: Chemical Formula: Pb++4(S++++++O3S--)O2(OH)2
Help on Composition: Composition: Molecular Weight = 1,006.94 gm
   Hydrogen   0.20 %  H     1.79 % H2O
   Lead      82.31 %  Pb   88.66 % PbO
   Sulfur     6.37 %  S
   Oxygen    11.12 %  O
            ______        ______ 
            100.00 %       96.82 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Pb4(SO3)SO2(OH)2
Help on Environment: Environment: Secondary mineral.
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Single specimen collected from the 40th to 44th levels of the Tsumeb mine, Tsumeb, Namibia, Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after Sidney Pieters (1920-2003), of Windhoek, Namibia for his outstanding contributions to Namibian mineralogy.
Help on Synonym: Synonym: ICSD 87736
  Lead Thiosulfate

Sidpietersite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.1453:1:1.7234
Help on Cell Dimensions: Cell Dimensions: a = 7.447, b = 6.502, c = 11.206, Z = 2; alpha = 114.3°, beta = 89.51°, gamma = 89.04° V = 494.44 Den(Calc)= 6.76
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.414(1), 10.13(1), 3.198(0.8),5.93(0.5), 2.622(0.4), 2.805(0.35), 2.889(0.35), 4.401(0.35),

Physical Properties of Sidpietersite

Help on Cleavage: Cleavage: {011} Distinct
Help on Color: Color: Cream white, Beige, Colorless.
Help on Diaphaneity: Diaphaneity: Opaque to translucent
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite).
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Hardness: Hardness: 1-2 - Between Talc and Gypsum
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: cream

Optical Properties of Sidpietersite

Help on Optical Data: Optical Data: NCalc= 1.95 - from Gladstone-Dale relationship (KC = 0.1407) where Ncalc=Dcalc*KC+1

Calculated Properties of Sidpietersite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=5.61 gm/cc
note: Specific Gravity of Sidpietersite =6.76 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.18
Boson Index = 0.82
Help on Photoelectric: Photoelectric: PESidpietersite =1,522.31 barns/electron
U=PESidpietersite x rElectron Density=8,543.79 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sidpietersite is Not Radioactive

Sidpietersite Classification

Help on  Dana Class: Dana Class: (34)Selenites - Tellurites - Sulfites
  (34.06)Dana Type
  (34.06.08)Dana Group Sidpietersite! Pb4(SO3S--)O2(OH)2 P1 1
Help on  Strunz Class: Strunz Class: 07.JA.05 07 - SULFATES (SELENATES, TELLURATES)
  07.J - Thiosulfates
  07.JA -Thiosulfates with Pb
07.JA.05 Sidpietersite! Pb4(SO3S--)O2(OH)2 P1 1

Other Sidpietersite Information

Help on References: References: NAME( CanMin, 8/99) PHYS. PROP.(CanMin, 10/99)
Help on See Also: See Also: Links to other databases for Sidpietersite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

Search for Sidpietersite using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Sidpietersite :

Ask about Sidpietersite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

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


Dana No: Strunz No: 07.JA.05





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.