ShengPing brand blackTourmaline - TradeSNS

Specifications

Lowest price from factory
Excellent price
Purity more than 98%

1.Tourmaline Sizes:

Tourmaline rough: 1cm below, 1-2cm, 2-5cm, 5cm above

Tourmaline particle: 1-4mm, 3-5mm, 5-8mm, 10-30mesh, 30-60mesh

Tourmaline powder: 80mesh, 100mesh, 200mesh, 325mesh, 500mesh, 800mesh, 1200mesh, 1500mesh, 2000mesh, 3000mesh, 4000mesh, 8000mesh

Tourmaline ceramsite: 1-2mm, 2-5mm, 5-8mm, 15mm, 18-20mm, 25mm

2.Typical chemical analysis:

3.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

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 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

5.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.