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Manganvesuvianite Mineral Data

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General Manganvesuvianite Information

Help on Chemical  Formula: Chemical Formula: Ca19Mn+++(Al,Mn+++,Fe+++)10(Mg,Mn++)2Si18O69(OH)9
Help on Composition: Composition: Molecular Weight = 2,951.26 gm
   Calcium    25.67 %  Ca   35.91 % CaO
   Magnesium   1.40 %  Mg    2.32 % MgO
   Manganese   4.84 %  Mn    0.96 % MnO /  5.88 % Mn2O3
   Aluminum    7.86 %  Al   14.86 % Al2O3
   Iron        0.76 %  Fe    1.08 % Fe2O3
   Silicon    16.94 %  Si   36.24 % SiO2
   Hydrogen    0.30 %  H     2.72 % H2O
   Oxygen     42.23 %  O
             ______        ______ 
             100.00 %       99.97 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca18.9Mn3+Al8.6Mn3+1.2Fe3+0.4Mg1.7Mn2+0.4Si17.8O69(OH)8.9
Help on Environment: Environment: Hydrothermal alteration of primary Mn ores. Found in vugs and veins. Mn-analogue of vesuvianite; structure
Help on IMA Status: IMA Status: Approved IMA 2002 (Dana # Added)
Help on Locality: Locality: Wessels and N'Chwaning II mines, Kalahari manganese fields, South Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the relationship to vesuvianite (idocrase) and Mn.
Help on Name Pronunciation: Name Pronunciation: Manganvesuvianite Say MANGANVESUVIANITE
Help on Synonym: Synonym: IMA2000-040
  Idocrase - Mn bearing
  Vesuvianite - Mn bearing

Manganvesuvianite Image

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Comments: Dark cherry red prismatic, crystals or manganvisuvianite to 2mm on matrix.
Location: N'Chwanning mine, Kalahari Mn Field, North Cape Province, South Africa. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Manganvesuvianite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.75931
Help on Cell Dimensions: Cell Dimensions: a = 15.572, c = 11.824, Z = 2; V = 2,867.17 Den(Calc)= 3.42
Help on Crystal System: Crystal System: Tetragonal - Dipyramidal H-M Symbol (4/m) Space Group: P 4/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.956(1), 2.756(0.94), 2.756(0.87),2.604(0.67), 2.598(0.66), 2.598(0.62), 2.753(0.6),
Help on Forms: Forms:

Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize

S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu

Help on Above

Forms: ( 1 0 1) ( 1 0 0) ( 1 1 0)

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Physical Properties of Manganvesuvianite

Help on Color: Color: Deep maroon red.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Subconchoidal - Brittle frature with subconchoidal fragments
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 6-7 - Orthoclase-Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Manganvesuvianite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.212,KC= 0.2184
Ncalc = 1.75
Help on Optical Data: Optical Data: Uniaxial (-), e=1.719, w=1.731, bire=0.0120.

Calculated Properties of Manganvesuvianite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.40 gm/cc
note: Specific Gravity of Manganvesuvianite =3.42 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEManganvesuvianite = 5.50 barns/electron
U=PEManganvesuvianite x rElectron Density= 18.71 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Manganvesuvianite is Not Radioactive

Manganvesuvianite Classification

Help on  Dana Class: Dana Class: (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups
  (58.02)with cations in [6] and higher coordination; single and double groups (n=1,2)
  (58.02.04)Vesuvianite Group Vesuvianite Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)4 P 4/n 4/m Wiluite! Ca19(Al,Mg,Fe,Ti)13(B,Al,[])5Si18O68(O,OH)10 P 4/nnc 4/m 2/m 2/m Fluorvesuvianite! Ca19(Al,Mg)13[SiO4]10[Si2O7]4(F,OH)10 P 4/nnc 4/m 2/m 2/m Manganvesuvianite! Ca19Mn(Al,Mn,Fe)10(Mg,Mn)2Si18O69(OH)9 P 4/n 4/m
Help on  Strunz Class: Strunz Class: 09.BG.35 09 - SILICATES (Germanates)
  09.B - Sorosilicates
  09.BG -Sorosilicates with mixed SiO4 and Si2O7 groups;
09.BG.35 Vesuvianite Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)4 P 4/n 4/m
09.BG.35 Fluorvesuvianite! Ca19(Al,Mg)13[SiO4]10[Si2O7]4(F,OH)10 P 4/nnc 4/m 2/m 2/m
09.BG.35 Wiluite! Ca19(Al,Mg,Fe,Ti)13(B,Al,[])5Si18O68(O,OH)10 P 4/nnc 4/m 2/m 2/m
09.BG.35 Manganvesuvianite! Ca19Mn(Al,Mn,Fe)10(Mg,Mn)2Si18O69(OH)9 P 4/n 4/m

Other Manganvesuvianite Information

Help on References: References: NAME( AmMin, Vol 88, p 251) PHYS. PROP.(AmMin, Vol 88, p 251) OPTIC PROP.(AmMin, Vol 88, p 251)
Help on See Also: See Also: Links to other databases for Manganvesuvianite :
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: 09.BG.35





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