Super tourmaline
- $5.00 / >=10 kilograms
- 10 kilograms
- Shijiazhuang Shengping Minerals Co., Ltd.
- Hebei, China
- Ms Candy Wang
Product Detail
Packaging Details: | 25kg/bag, 50kg/bag or as your request | shape: | piece |
Silica: | 38.02 | brand: | Shengping |
payment terms: | L/C, D/A, T/T, Western Union | Supply capacity: | 1000 tons per month |
port: | China's main ports | Aluminum oxide: | 29.8 |
chemical composition: | Sl2O3, Fe2O3, FeO, MgO, CaO, k2O, Na2O, TiO2, p2O5, MnO | model: | SP9865 |
application: | Textiles, coatings, health care products, plastics | Origin: | Hebei china |
1. Advantages:
- Guarantee the high quality of the product.
- .All products will be provided according to different requirements of customers.
- One-stop service
- Grade A product with high purity
- Production capacity: 1000-1500 tons/month
2. Tourmaline size:
Tourmaline raw stone: below 1cm, 1-2cm, 2-5cm, above 5cm
Tourmaline particles: 1-4mm, 3-5mm, 5-8mm, 10-30 mesh, 30-60 mesh
Tourmaline powder: 80 mesh, 100 mesh, 200 mesh, 325 mesh, 500 mesh, 800 mesh, 1200 mesh, 1500 mesh, 2000 mesh, 3000 mesh, 4000 mesh, 8000 mesh
Tourmaline ceramsite: 1-2mm, 2-5mm, 5-8mm, 15mm, 18-20mm, 25mm
3. Typical chemical analysis:
element | weight percentage (%) |
silica | 37.05 |
Aluminum oxide | 29.8 |
magnesium oxide | 8.05 |
Calcium Oxide | 1.18 |
potassium oxide | 0.09 |
Ferrous oxide | 8.33 |
sodium oxide | 1.19 |
Chromium trioxide | 0.22 |
boron oxide | 10.16 |
Titanium dioxide | 0.44 |
4. Typical physical properties:
density | 2.82-3.32 |
hardness | 7-7.5 |
crystal habit | parallel and elongated. Acicular prisms, sometimes radial. Lots of. Dispersed particles (in granite) |
crystal system | triangle |
cleavage | Vague |
fracture | Uneven, shell-like, brittle |
luster | glassy, sometimes resinous |
stripe | white |
proportion | 3.06 (+.20 -.06) |
polished gloss | Glass |
optical properties | birefringent, uniaxial negative |
Refractive index | nω=1.635–1.675, nε=1.610–1.650 |
birefringence | -0.018 to -0.040; usually around 0.020, but may reach 0.040 in dark gems |
Pleochroism | usually moderate to strong Red Tourmaline: Sure; Dark Red, Light Red |
dispersion | .017 |
ultraviolet light | Pink gemstones - inert to very weak |
fluorescence | Longwave and shortwave from red to purple |
absorption spectrum | Strong narrow band at 498 nm, blue and green gems absorb almost completely red down to 640 nm; red and pink gems show lines at 458 and 451 nm and broad bands in the green spectrum |
5.pack:
1). If there is no special requirement, we will use normal packaging, 25kg PVC bag, then 40 bags for 1000kg big bag.
2). If special packing or marking is required, please list it in your email. We want to pack as requested
6.pay:
1). Our first choice is T/T. For large orders, 40% T/T in advance is deposit, and the rest is paid within 7-10 days after receiving the copy of B/L. For small order, 100% T/T in advance.
2). The second choice is L/C. We can accept irrevocable L/C at sight. For large order 40% T/T, 60% L/C. We cannot accept L/C for small orders. We suggest that the best payment method is T/T, because L/C is very complicated and a lot of extra charges are to the bank
3). Others: Western Union, Paypal.
7. Factory visit:
1).Welcome any customers to visit our factory directly
2). If customers have any schedule in China, please let us know. We will be happy to help you book your hotel and pick you up from the airport or train station
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