| Type of minerals |
Item No. |
Mineral |
Formula |
Range of grades, wt% |
Presence in samples |
| Main rock forming minerals |
1 |
Quartz |
SiO2 |
37.0 - 77.7 |
In all samples |
| 2 |
Kaolinite |
Al2Si2O5(OH)4 |
9.90 - 47.2 |
In all samples |
|
| 3 |
Muscovite |
KAl2[AlSi3O10](OH, F)2 |
1.44 - 18.00 |
In 27 samples |
|
| 4 |
Illite |
K < 1А1 < 2[(Si, Al)4O10](OH)2 × nН2О (generalized formula of a group of minerals referred to hydromica) |
1.14 - 9.22 |
In 22 samples |
|
| 5 |
Hematite |
Fe2O3 |
0.49 - 7.61 |
In 26 samples |
|
| 6 |
Anatase |
TiO2 |
0.34 - 1.40 |
In 27 samples |
|
| 7 |
Nontronite |
Na0.3Fe23+[(Si, Al)4O10] × (OH)2 · nH2O |
6.5 - 30.0 |
In Samples 22, 23, 24 |
|
| 8 |
Tosudite |
Na0.5(Al,Mg)6 × [(Si, Al)8O18] (OH)12·5H2O |
11.62 - 17.8 |
In Samples 22, 23, 24 |
|
| 9 |
Clinochlore |
(Mg, Fe2+)5Al[AlSi3O10] × (OH)8 |
2.45 - 3.47 |
In Samples 22, 23, 24 |
|
| 10 |
Calcite |
Ca(CO)3 |
0.18 - 3.20 |
In 12 samples |
|
| Secondary minerals and minerals, which are rare in this type of rock |
11 |
Siderite |
Fe2+(CO)3 |
0.34 - 2.46 |
In 14 samples |
| 12 |
magnetite |
Fe2+Fe23+O4 |
0.28 - 2.44 |
In Samples 22, 7, 12, 22 |
|
| 13 |
Rutile |
TiO2 |
1.23 - 2.32 |
In Samples 3, 4, 10, 17 |
|
| 14 |
Lizardite |
Mg3Si2O5(OH)4 |
1.20 - 3.26 |
In Samples 10,17, 21, 22 |
|
| 15 |
Ankerite |
Ca (Fe2+, Mg, Mn) (CO3)2 |
0.60 - 1.08 |
In Samples 21, 26 |
|
| 16 |
Gibbsite |
γ-Al(OH)3 |
0.67 - 4.88 |
In Samples 28, 29 |
|
| 17 |
Talc |
Mg3[Si4O10](OH)2 |
8.82 |
Sample 5 |
|
| 18 |
Montmorillonite |
(Na,Ca)0.3[(Al, Mg)2Si4O10] × (OH)2·nH2O |
7.05 |
Sample 5 |
|
| 19 |
Fayalite |
Fe2SiO4 |
4.58 |
Sample 29 |
|
| 20 |
Orthoclase |
K[AlSi3O8] |
2.89 |
Sample 21 |
|
| 21 |
Berthierine (kaolinite-serpentinite group) |
(Fe2+, Fe3+, Al)3 × [(Si, Al)2O5](OH)4 |
3.47 |
Sample 23 |
|
| 22 |
Bernalite |
Fe(OH)3 |
2.60 |
Sample 31 |
|
| 23 |
Andradite |
Са3Fе2 [SiO4]3 |
1.97 |
Sample 2 |
|
| 24 |
Augite |
Са(Mg, Fe, Al)[(Si, Аl)2O6] |
1.52 |
Sample 20 |
|
| 25 |
Aragonite |
Ca(CO)3 |
1.49 |
Sample 2 |
|
| 26 |
Goyazite |
SrAl3(PO4)(PO3OH)(OH)6 |
1.19 |
Sample 31 |
|
| 27 |
Diopside |
СаMg[Si2O6] |
1.00 |
Sample 26 |
|
| 28 |
Magnesio-cafrolite |
MgAl2[Si2O6](OH)4 |
0.56 |
Sample 26 |