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  • Contact Person : Ms. Wong Yuni
  • Company Name : Qingdao Highsky International Trade Co., Ltd.
  • Tel : 86-532-55579890
  • Fax : 86-532-55579840
  • Address : Shandong,Qingdao,Room 2-2316 Artech Space,No.63 Haier Road,Laoshan District,Qingdao
  • Country/Region : China
  • Zip : 266000

tourmaline

tourmaline
Product Detailed
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Related Product Searches:tourmaline,High Quality,tourmaline, raw tourmaline,Jiaxin
natrual black tourmaline crystals with high quality and low price Specifications

natrual black tourmaline crystals with high quality and low price

Place of Origin: Hebei, China

Brand name: Jiaxin

Application: radio industry, jewelry, filter, health care, etc

Category: cyclosilicate

Size: 10-20mesh 20-40mesh 200mesh 325mesh

Color: Most commonly black, but can range from brown, violet, green, pink, or in a dual-colored pink and green

Quality: Natural

Identification: ISO9001:2000

MOQ: 15MT

Packaging: 25-50KG/bag, or 1MT/bag, and packing can be customized

Port: XINGANG, CHINA (Tianjin)

Delivery time: 15days after confirmation of order

Payment: T/T L/C

Supply ability: 500T/MTS per month more

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.

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

     Samples are available.

     Products are to be produced as per samples confirmed. Quality checking is done in the factory by our QC team and clients/or a third party named by clients.

     Price is negotiable based on specification, quantity, delivering time etc…

tourmaline



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