Mineralogy Database

Manganolangbeinite Mineral Data

Search Webmineral :

General Manganolangbeinite Information

Help on Chemical  Formula: Chemical Formula: K2Mn2(SO4)3
Help on Composition: Composition: Molecular Weight = 476.26 gm
   Potassium  16.42 %  K    19.78 % K2O
   Manganese  23.07 %  Mn   29.79 % MnO
   Sulfur     20.20 %  S    50.43 % SO3
   Oxygen     40.31 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2Mn2+2(SO4)3
Help on Environment: Environment: In a cavern in lava, in thenardite and halite stalactites, formed by fumarolic action.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1924
Help on Locality: Locality: Vesuvius, Campania, Italy. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as a manganese compound analogous to langbeinite.
Help on Synonym: Synonym: ICSD 200897
  PDF 20-909

Manganolangbeinite Crystallography

Help on Cell Dimensions: Cell Dimensions: a = 10.014, Z = 4; V = 1,004.21 Den(Calc)= 3.15
Help on Crystal System: Crystal System: Isometric - Tetartoidal H-M Symbol (2 3) Space Group: P 213
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.2(1), 2.7(0.5), 3.05(0.18),

Physical Properties of Manganolangbeinite

Help on Cleavage: Cleavage: None
Help on Color: Color: Pink.
Help on Density: Density: 3.02
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Manganolangbeinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.027 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1816,KPDmeas= 0.1894,KC= 0.1867
Ncalc = 1.56 - 1.59
Help on Optical Data: Optical Data: Isotropic, n=1.572.

Calculated Properties of Manganolangbeinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.94 gm/cc
note: Specific Gravity of Manganolangbeinite =3.02 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0017280878
Boson Index = 0.9982719122
Help on Photoelectric: Photoelectric: PEManganolangbeinite = 8.75 barns/electron
U=PEManganolangbeinite x relectron= 25.76 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 230.80 (Gamma Ray American Petroleum Institute Units)
Concentration of Manganolangbeinite per GRapi unit = 0.43 (%)

Estimated Radioactivity from Manganolangbeinite - barely detectable


Manganolangbeinite Classification

Help on  Dana Class: Dana Class: (28)Anhydrous Acid and Sulfates
  (28.04)with miscellaneous formulae
  (28.04.04)Langbeinite Series Langbeinite K2Mg2(SO4)3 P 213 2 3 Manganolangbeinite K2Mn2(SO4)3 P 213 2 3 Efremovite (NH4)2Mg2(SO4)3 P 213 2 3
Help on  Strunz Class: Strunz Class: 07.AC.10 07 - SULFATES (SELENATES, TELLURATES)
  07.A - Sulfates (selenates, etc.) without Additional Anions, without H2O
  07.AC -With medium-sized and large cations
07.AC.10 Efremovite (NH4)2Mg2(SO4)3 P 213 2 3
07.AC.10 Manganolangbeinite K2Mn2(SO4)3 P 213 2 3
07.AC.10 Langbeinite K2Mg2(SO4)3 P 213 2 3

Other Manganolangbeinite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Manganolangbeinite :
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 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

Search for Manganolangbeinite using:

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

Visit our Advertisers for Manganolangbeinite :

Ask about Manganolangbeinite 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 Manganolangbeinite Specimen Label here :


Dana No: Strunz No: 07.AC.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.