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Martinite Mineral Data
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General Martinite Information
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 Chemical Formula: |
(Na,[ ],Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2•4(H2O) |
| Composition: |
Molecular Weight = 1,589.21 gm |
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Sodium 13.29 % Na 17.92 % Na2O |
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Calcium 12.08 % Ca 16.90 % CaO |
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Magnesium 0.02 % Mg 0.03 % MgO |
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Titanium 0.03 % Ti 0.05 % TiO2 |
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Manganese 0.07 % Mn 0.09 % MnO |
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Silicon 23.12 % Si 49.45 % SiO2 |
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Boron 2.58 % B 8.32 % B2O3 |
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Hydrogen 0.61 % H 5.48 % H2O |
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Sulfur 0.93 % S 2.32 % SO3 |
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Chlorine 1.12 % Cl 1.12 % Cl |
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- %
Cl -0.25 % -O=Cl2 |
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Oxygen 43.95 % O |
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Fluorine 2.20 % F 2.20 % F |
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- %
F -0.93 % -O=F2 |
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______ ______ |
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100.00 % 102.69 % = TOTAL OXIDE |
| Empirical Formula: |
Na9.19Ca0.82Ca3.97Mn2+0.02Mg0.01Si13.08S0.464(B0.45)Ti0.01B2O38(OH)1.5Cl0.5F1.84(OH)0.16�4(H2O) |
| Environment: |
Formed through the interaction of highly fractionated, hyperagpaitic fluids with sodalite syenite xenoliths. (reyerite group; structure) |
| IMA Status: |
Approved IMA 2001 (Dana # Added) |
| Locality: |
Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Name for Robert Fran�ois Martin (b. 1941), Professor of Geology at McGill University and long-time editor of The Canadian Mineralogist. |
| Synonym: |
IMA2001-059 |
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Martinite Image |
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Images:
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Martinite
Comments: Colorless, pseudohexagonal plate of martinite associated with sodalite and a clinoamphibole. (CanMin, v45:1281).
Location: Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada.
Scale: Crystal size 40 µm.
© Canadian Mineralogist |
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Martinite Crystallography
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| Axial Ratios: |
a:b:c =1.0009:1:1.4711 |
| Cell Dimensions: |
a = 9.5437, b = 9.5349, c = 14.0268, Z = 1; alpha = 108.943°, beta = 74.154°, gamma = 119.78° V = 1,008.03 Den(Calc)= 2.62 |
| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 13.18(1), 6.58(0.43), 2.968(0.37),3.29(0.34), 2.908(0.27), 1.794(0.2), |
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Physical Properties of Martinite
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| Cleavage: |
{001} Perfect |
| Color: |
Colorless, Purple. |
| Diaphaneity: |
Transparent |
| Fracture: |
Brittle - Uneven - Very brittle fracture producing uneven fragments. |
| Hardness: |
4 - Fluorite |
| Luster: |
Vitreous (Glassy) |
| Streak: |
white |
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Optical Properties of Martinite
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| Gladstone-Dale: |
CI calc= 0.019 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2138,KC= 0.218
Ncalc = 1.55 |
| Optical Data: |
Biaxial (-), a=1.529, b=1.549, g=1.551, bire=0.0220, 2V(Calc)=34, 2V(Meas)=38. Dispersion dispersion not observed. |
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Calculated Properties of Martinite
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| Electron Density: |
Bulk Density (Electron Density)=2.53 gm/cc
note: Specific Gravity of Martinite =2.54 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PEMartinite = 2.77 barns/electron
U=PEMartinite x rElectron Density= 7.01 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Martinite is Not Radioactive |
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Martinite Classification
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| Dana Class: |
73.02.02d.01 (73)Phyllosilicate Condensed Tetrahedral Sheets |
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(73.02)with double and single layers |
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(73.02.02d)Reyerite group (Triclinic Subgroup) |
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73.02.02d.01 Martinite! (Na,[],Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2•4(H2O) P1 1 |
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73.02.02d.02 Lalondeite! (Na,Ca)6(Ca,Na)3Si16O38(F,OH)2•3(H2O) P1 1 |
| Strunz Class: |
09.EE.80 09 - SILICATES (Germanates) |
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09.E - Phyllosilicates |
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09.EE -Single tetrahedral nets of 6-membered rings |
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09.EE.80 Fedorite KNa4Ca4(Al,Si)16O36(OH,F)4•6(H2O) C1 1 |
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09.EE.80 Martinite! (Na,[],Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2•4(H2O) P1 1 |
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Other Martinite Information
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| References: |
NAME( CanMin, v45:1281) PHYS. PROP.(CanMin, v45:1281) OPTIC PROP.(CanMin, v45:1281) |
| See Also: |
Links to other databases for Martinite :
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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Martinite
(Na,[ ],Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2•4(H2O)
Dana No: 73.02.02d.01 Strunz No: 09.EE.80
Locality:
Notes:
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