Pronunciation Guide 
General Information |
|
 Chemical Formula: |
Na11(Na,Ca)4(Mg,Mn)Ti++++4(Si4O12)(PO4)4O5F3 |
| IMA Status: |
Approved IMA |
Classification |
|
| Dana Class: |
56.4.1.4 (56)Sorosilicate Si2O7 Groups and O, OH, F. and H2O |
| (56.4)with [Si2O7] with phosphate | |
| (56.4.1)Lomonosovite group | |
| Strunz Class: |
VIII/E.07-150 VIII - Silicates |
| VIII/E - Cyklosilicates, quadruplet rings [Si4O11]8- | |
| VIII/E.07 - Murmanite - Nenadkevichite series | |
Crystallography |
|
| Axial Ratios: |
a:b:c =1.3079:1:7.5058 |
| Cell Dimensions: |
a = 7.078, b = 5.4115, c = 40.618, Z = 2; alpha = 90.01ø, beta = 93.19ø, gamma = 90ø V = 1,553.36 |
| Crystal System: |
Triclinic - Pedial H-M Symbol (1) Space Group: P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 2.896(1) 2.691(0.7) 2.913(0.5) |
Physical Properties |
|
| Cleavage: |
[001] Perfect, [110] Distinct |
| Color: |
brown. |
| Density: |
3.03 |
| Hardness: |
4.5-5 |
| Luster: |
Resinous |
| Streak: |
yellowish brown |
Optical Properties |
|
| Optical Data: |
Biaxial (-), a=1.627, b=1.686, g=1.69, bire=0.0630, 2V(Calc)=28, 2V(Meas)=29. |
Other Information |
|
| References: |
PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| See Also: |
Links to other databases for Sobolevite : 1 -Athena Mineralogy 2 - EUROmin Project 3 -MinDat.org Location Data 4 -MinMax 5 -École des Mines de Paris Search for Sobolevite using: Visit our Advertisers for Sobolevite : Ask about Sobolevite here : |
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