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1. Description:
Tourmaline Powder is one kind of silicate substance with aluminium, natrium, magnesium and lithium ring structure being of containing boron. It is of thermoelectricity and piexoelectricity. Due to the electric self-polarization of tourmaline, polarized energy comes from the change of temperature, the heat releasing coefficient is 10-74×10-6c.cm-2k-1. When the temperature and pressure changes (including micro change), then will cause potential difference (voltage). This kind of static voltage is up to 1 million electron volts and will accelerate surrounding air occur ionization. The electrons being shot down adhere close water and oxygen molecule, and make them transform into air negative ions (namely H3O2- and O32-), and make polarity ions in balance position oscillate, so that causes dipole square change to generate negative ions.
Typical chemical analysis:
element | Percent by weight (%) |
SiO2 | 37.05 |
Al2O3 | 29.8 |
MgO | 8.05 |
CaO | 1.18 |
K2O | 0.09 |
FeO | 8.33 |
NaO2 | 1.19 |
Cr2O3 | 0.22 |
B2O3 | 10.16 |
TiO2 | 0.44 |
Typical chemical formula:
(Ca,K,Na,[])(Al,Fe,Li,Mg,Mn)3(Al,Cr, Fe,V)6(BO3)3(Si,Al,B)6O18(OH,F)4
Typical physical properties:
Density | 2.82-3.32 |
Hardness | 7-7.5 |
Crystal habit | Parallel and elongated. Acicular prisms, sometimes radiating. Massive. Scattered grains (in granite) |
Crystal system | Trigonal |
Cleavage | Indistinct |
Fracture | Uneven, small conchoidal, brittle |
Luster | Vitreous, sometimes resinous |
Streak | White |
Specific gravity | 3.06 (+.20 -.06) |
Polish luster | Vitreous |
Optical properties | Double refractive, uniaxial negative |
Refractive index | nω=1.635–1.675, nε=1.610–1.650 |
Birefringence | -0.018 to -0.040; typically about .020 but in dark stones it may reach .040 |
Pleochroism | typically moderate to strong Red Tourmaline: Definite; dark red,light redGreen Tourmaline: Strong; dark green, yellow-greenBrown Tourmaline: Definite; dark brown, light brownBlue Tourmaline: Strong; dark blue, light blue |
Dispersion | .017 |
Ultraviolet | pink stones—inert to very weak |
Fluorescence | red to violet in long and short wave |
Absorption spectra | a strong narrow band at 498 nm, and almost complete absorption of red down to 640nm in blue and green stones; red and pink stones show lines at 458 and 451nm as well as a broad band in the green spectrum |
2. Applications:
1. High pure tourmaline is the bijou that can be made into jewelry such as necklace bracelet and so on. |
2. It can be used in deodorizing wall paper, floorboard, ceiling board furniture inner wall coasting material and concrete. |
3. Packing material with the function of antibacterial and fresh keeping. |
4. The healthy filling of cigarette filter tip. |
5. Purification materials for water and air. |
6. Additive of toothpaste and cosmetic |
7. Antibacterial coating and is use in electronic equipment and house hold electric. |
8. Made composite ceramic with the function of antibacterial sterilization and deodorization. |
3. Test report:
4. Our product:
HOT! tourmaline powder