Marsturite Mineral Data + 
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General Marsturite Information |
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 Chemical Formula: |
NaCaMn3[Si5O14(OH)] | ||
| Composition: |
Molecular Weight = 609.31 gm | ||
| Sodium 3.77 % Na 5.09 % Na2O | |||
| Calcium 6.58 % Ca 9.20 % CaO | |||
| Manganese 27.05 % Mn 34.93 % MnO | |||
| Silicon 23.05 % Si 49.31 % SiO2 | |||
| Hydrogen 0.17 % H 1.48 % H2O | |||
| Oxygen 39.39 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Empirical Formula: |
NaCaMn2+3Si5O14(OH) | ||
| IMA Status: |
Approved IMA 1978 | ||
| Locality: |
Franklin, Sussex County, New Jersey, USA. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Marion Stuart of Bellvue, Idaho, who has been a staunch supporter of the preservation of natural history specimens, particularly those of geological interest. | ||
Marsturite Image | |||
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Images:
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Marsturite Crystallography |
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| Axial Ratios: |
a:b:c =0.64:1:0.5635 | ||
| Cell Dimensions: |
a = 7.7, b = 12.03, c = 6.78, Z = 2; alpha = 85.26°, beta = 94.1°, gamma = 111.04° V = 582.67 Den(Calc)= 3.47 | ||
| Crystal System: |
TriclinicSpace Group: P1,P 1 | ||
| X Ray Diffraction: |
By Intensity(I/Io): 2.725(1), 2.916(0.9), 2.999(0.8), | ||
Physical Properties of Marsturite |
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| Cleavage: |
[100] Indistinct, [001] Indistinct | ||
| Color: |
White, Light pink. | ||
| Density: |
3.46 | ||
| Diaphaniety: |
Transparent to Translucent | ||
| Habit: |
Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape. | ||
| Hardness: |
6 - Orthoclase | ||
| Luster: |
Vitreous (Glassy) | ||
| Streak: |
white | ||
Optical Properties of Marsturite |
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| Gladstone-Dale: |
CI meas= 0.022 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.025 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2003,KPDmeas= 0.2009,KC= 0.2054 |
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| Optical Data: |
Biaxial (+), a=1.686, b=1.691, g=1.708, bire=0.0220, 2V(Calc)=58, 2V(Meas)=60. Dispersion r > v weak. | ||
Calculated Properties of Marsturite |
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| Electron Density: |
relectron=3.37 gm/cc |
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| Fermion Index |
Fermion Index = 0.01104 Boson Index = 0.98896 |
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| Photoelectric: |
PEMarsturite = 8.64 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Marsturite is Not Radioactive |
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Marsturite Classification |
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| Dana Class: |
65.4.1.6 (65)Inosilicate Single-Width Unbranched Chains, W=1 | ||
| (65.4)with chains P=5 | |||
| (65.4.1)Rhodonite group | |||
| Strunz Class: |
VIII/F.27-80 VIII - Silicates | ||
| VIII/F - Inosilicates (chain and band) Five chains [Si5O15]10- | |||
| VIII/F.27 - Rhodonite - Inesite series | |||
Other Marsturite Information |
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | ||
| See Also: |
Links to other databases for Marsturite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 - Franklin Minerals(Dunn) 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (MinSocAm) 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -École des Mines de Paris Search for Marsturite using: Visit our Advertisers for Marsturite : Translate Marsturite Mineral Data : Ask about Marsturite here : Print or Cut-and-Paste your Marsturite Specimen Label here :
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