Martinite Mineral Data (original) (raw)
General Martinite Information
Chemical Formula:
(Na,[ ],Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2•4(H2O)
Composition:
Molecular Weight = 1,589.21 gm
Sodium 13.29 % Na 17.92 % Na2O
Calcium 12.08 % Ca 16.90 % CaO
Magnesium 0.02 % Mg 0.03 % MgO
Titanium 0.03 % Ti 0.05 % TiO2
Manganese 0.07 % Mn 0.09 % MnO
Silicon 23.12 % Si 49.45 % SiO2
Boron 2.58 % B 8.32 % B2O3
Hydrogen 0.61 % H 5.48 % H2O
Sulfur 0.93 % S 2.32 % SO3
Chlorine 1.12 % Cl 1.12 % Cl
Oxygen 43.95 % O
Fluorine 2.20 % F 2.20 % F
______ ______
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
Martinite Image
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
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 - PinacoidalH-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),
Crystal Structure:
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| | McDonald A M , Chao G Y , The Canadian Mineralogist , 45 (2007) p.1281-1292, Martinite, a new hydrated sodium calcium fluorborosilicate species from Mont, Saint-Hilaire, Quebec: description, structure determination and genetic implications, Note: changed F(y) to match reported bond distances, Locality: Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Martinite
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
Optical Properties of Martinite
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.
Calculated Properties of Martinite
Electron Density:
Bulk Density (Electron Density)=2.53 gm/cc
note: Specific Gravity of Martinite =2.54 gm/cc.
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.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Martinite is Not Radioactive
Martinite Classification
Dana Class:
73.02.02d.01 (73)Phyllosilicate Condensed Tetrahedral Sheets
(73.02)with double and single layers
(73.02.02d)Reyerite group (Triclinic Subgroup)
73.02.02d.01 Martinite! (Na,[],Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2•4(H2O) P1 1
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)
09.E - Phyllosilicates
09.EE -Single tetrahedral nets of 6-membered rings
09.EE.80 Fedorite KNa4Ca4(Al,Si)16O36(OH,F)4•6(H2O) C1 1
09.EE.80 Martinite! (Na,[],Ca)12Ca4(Si,S,B)14B2O38(OH,Cl)2F2•4(H2O) P1 1
Other Martinite Information
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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Print or Cut-and-Paste your Martinite Specimen Label here :
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: