Mineralogy Database

Manganarsite Mineral Data

Search Webmineral :

General Manganarsite Information

Help on Chemical  Formula: Chemical Formula: Mn++3As+++204(OH)4
Help on Composition: Composition: Molecular Weight = 446.68 gm
   Manganese  36.90 %  Mn   47.64 % MnO
   Arsenic    33.55 %  As   44.29 % As2O3
   Hydrogen    0.90 %  H     8.07 % H2O
   Oxygen     28.65 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+3As2O4(OH)4
Help on IMA Status: IMA Status: Approved IMA 1986
Help on Locality: Locality: Langban, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the composition (Manganese, Arsenic).
Help on Name Pronunciation: Name Pronunciation: Manganarsite + Pronunciation Say MANGANARSITE

Manganarsite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.6333
Help on Cell Dimensions: Cell Dimensions: a = 11.451, c = 7.252, Z = 4; V = 823.52 Den(Calc)= 3.60
Help on Crystal System: Crystal System: Trigonal - Trapezohedral H-M Symbol (3 2) Space Group: P 312 ?
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.662(1), 1.845(0.7), 1.652(0.6),

Physical Properties of Manganarsite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Pink brown.
Help on Density: Density: 3.64
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Hexagonal - Six-sided crystal shape in cross-section or habit.
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: light pink

Optical Properties of Manganarsite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.02 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2208,KPDmeas= 0.2184,KC= 0.2254
Ncalc = 1.81 - 1.82
Help on Optical Data: Optical Data: Uniaxial (-), e=1.78, w=1.81, bire=0.0300.

Calculated Properties of Manganarsite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.37 gm/cc
note: Specific Gravity of Manganarsite =3.60 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001388955
Boson Index = 0.9998611045
Help on Photoelectric: Photoelectric: PEManganarsite = 32.93 barns/electron
U=PEManganarsite x rElectron Density= 110.92 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Manganarsite is Not Radioactive

Manganarsite Classification

Help on  Dana Class: Dana Class: (46)Basic or Halogen-Containing Antimonites, Arsenites and Phosphites
  (46.02)with miscellaneous formulae
  (46.02.06)Dana Group Manganarsite Mn3As204(OH)4 P 312 ? 3 2
Help on  Strunz Class: Strunz Class: 04.JB.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.J - Arsenites, Antimonites, Bismuthites, Sulfites,
  04.JB -Arsenites, antimonites, bismuthites; with additional anions, without H2O
04.JB.10 Manganarsite Mn3As204(OH)4 P 312 ? 3 2

Other Manganarsite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Manganarsite :
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 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

Search for Manganarsite using:

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

Visit our Advertisers for Manganarsite :

Ask about Manganarsite 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 Manganarsite Specimen Label here :


Dana No: Strunz No: 04.JB.10





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