|
LANGFANG TECHNOLOGY CO.,LTD
Add:NO.151 JIXING BUSINESS CENTRE CHANGAN DISTRICT SHENGLI STREET SHIJIAZHUANG CHINA
Mobile:86-13784412177
86-15633599261
E-mail:info@longfacorp.com
Web:www.longfacorp.com
|
|
|
|
Products >>
Non-Metallic Minerals |
|
Natural rough tourmaline |
|
Specification:
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 red Green Tourmaline: Strong; dark green, yellow-green Brown Tourmaline: Definite; dark brown, light brown Blue 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 |
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. | |
【Close】 |
|
|