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Henritermierite Mineral Data

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General Henritermierite Information

Help on Chemical  Formula: Chemical Formula: Ca3(Mn,Al)2(SiO4)2(OH)4
Help on Composition: Composition: Molecular Weight = 468.33 gm
   Calcium    25.67 %  Ca   35.92 % CaO
   Manganese  17.60 %  Mn   25.28 % Mn2O3
   Aluminum    2.88 %  Al    5.44 % Al2O3
   Silicon    11.99 %  Si   25.66 % SiO2
   Hydrogen    0.86 %  H     7.69 % H2O
   Oxygen     41.00 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Mn3+1.5Al0.5(SiO4)2(OH)4
Help on Environment: Environment: As small grains filling interstices between crystals of other minerals in a manganese ore deposit.
Help on IMA Status: IMA Status: Approved IMA 1969
Help on Locality: Locality: Tachgagalt manganese mine, Anti-Atlas Mountains, Morocco. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Henri F.E. Termier (1897- ), Professor of Geology at the Sorbonne, Paris, France.
Help on Name Pronunciation: Name Pronunciation: Henritermierite + Pronunciation Say HENRITERMIERITE
Help on Synonym: Synonym: ICSD 51249
  PDF 22-150
 

Henritermierite Image

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  Henritermierite

Comments: Dark brown octahedral henritermierite crystal on massive material.
Location: Wessels Mine, Kalahari Manganese Fields, Northern Cape Province, South Africa. Scale: Specimen Size 4.5 x 4 x 3 cm.
© Rob Lavinsky

Henritermierite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:0.96125
Help on Cell Dimensions: Cell Dimensions: a = 12.39, c = 11.91, Z = 8; V = 1,828.33 Den(Calc)= 3.40
Help on Crystal System: Crystal System: Tetragonal - Ditetragonal Dipyramidal H-M Symbol (4/m 2/m 2/m) Space Group: I 41/acd
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.75(1), 2.516(0.8), 4.37(0.6),
Help on Forms: Forms:

Mouse
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Drag1 - Manipulate Crystal
Drag2 - Resize

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Help on Above

Forms: ( 1 0 2) ( 1 1 0) ( 1 0 0)

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Physical Properties of Henritermierite

Help on Cleavage: Cleavage: None
Help on Color: Color: Clove brown, Orange brown.
Help on Density: Density: 3.34
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Luster: Luster: Vitreous (Glassy)
 

Optical Properties of Henritermierite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2301,KPDmeas= 0.2343,KC= 0.2423
Ncalc = 1.81 - 1.82
Help on Optical Data: Optical Data: Uniaxial (+), w=1.765, e=1.8, bire=0.0350.
 

Calculated Properties of Henritermierite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.31 gm/cc
note: Specific Gravity of Henritermierite =3.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0061458349
Boson Index = 0.9938541651
Help on Photoelectric: Photoelectric: PEHenritermierite = 8.14 barns/electron
U=PEHenritermierite x rElectron Density= 26.92 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Henritermierite is Not Radioactive
 

Henritermierite Classification

Help on  Dana Class: Dana Class: 51.04.04.01 (51)Nesosilicate Insular SiO4 Groups Only
  (51.04)with cations in [6] and >[6] coordination
  (51.04.04)Garnet group (Tetragonal Hydrogarnet)
 
51.04.04.01 Henritermierite Ca3(Mn,Al)2(SiO4)2(OH)4 I 41/acd 4/m 2/m 2/m
 
51.04.04.02 Holtstamite! Ca3(Al,Mn)2(SiO4)2(OH)4 I 41/acd 4/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.AD.25 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AD -Nesosilicates without additional anions;
 
09.AD.25 Almandine Fe3Al2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Calderite (Mn,Ca)3(Fe,Al)2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) I a3d 4/m 3 2/m
 
09.AD.25 Knorringite Mg3Cr2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Henritermierite Ca3(Mn,Al)2(SiO4)2(OH)4 I 41/acd 4/m 2/m 2/m
 
09.AD.25 Katoite Ca3Al2(SiO4)3-x(OH)4xx=1.5-3 I a3d 4/m 3 2/m
 
09.AD.25 Majorite Mg3(Fe,Al,Si)2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m
 
09.AD.25 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m
 
09.AD.25 Pyrope Mg3Al2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Spessartine Mn3Al2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m
 
09.AD.25 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Wadalite Ca6Al5Si2O16Cl3 I 43d 4 3m
 
09.AD.25 Holtstamite! Ca3(Al,Mn)2(SiO4)2(OH)4 I 41/acd 4/m 2/m 2/m
 

Other Henritermierite Information

Help on References: References: NAME( AntBidBlaNic2) 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 Henritermierite :
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
15 - WWW-MINCRYST

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

Henritermierite

Ca3(Mn,Al)2(SiO4)2(OH)4
Dana No: 51.04.04.01 Strunz No: 09.AD.25
Locality:

 

Notes:

 

 
   
 


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