Tourmaline

We are offering tourmaline 【properties and structure of a tourmaline】
tourmaline is a kind of silicate minerals boron-aluminum with boron-containing characterized and
aluminum, sodium, iron, lithium cyclic structure. The chemical formula is
nar3al6[si6o18](bo3)3(oh)4. Tourmaline's process name is known as "tourmaline (chinese
name is "bixi")", gem-quality tourmaline collectively referred to as "tourmaline (bixi)". Because of the
colorful, transparent and flawless loved by the people, ranking first in the list of mid-range gems.
Tourmaline colors with different components, iron-rich tourmaline is black, rich in lithium, manganese
and cesium is rosy or light blue; magnesium-rich tourmaline is often in brown and yellow, chromium-
rich is in dark green tourmaline. Tourmaline has a vitreous luster, no cleavage, the hardness is 7.0-7.5
with brittle, the proportion is 3.03-3.25g/cm3, has piezoelectric and pyroelectric properties. The
tourmaline crystals is columnar, aggregate is in rod-shaped, radial, small needle-like, also in dense
block or implicitly crystalline. Our factory mainly produce iron tourmaline, divided into two kinds of
fibrous crystal shape (hexahedral structure) and loose shape.
【 physical and chemical properties of tourmaline】
ingredients al2o3 b2o3 k2o nao2 mgo sio2 fe2o3 cao
content (%) 34.98 10.94 0.036 0.91 0.20 34.60 15.80 trace
remark 97.466%
【the usage of tourmaline】
tourmaline has unique physical and chemical properties of the piezoelectric and pyroelectric
properties, so it has far-infrared band of the electromagnetic radiation to produce negative oxygen
ions, as well as anti-bacterial, deodorizing functions. Therefore, in recent years, is widely used in
the field of functional fibers, textiles, clothing, coating materials, water purification, building
materials, daily necessities, and composite materials. Changes by temperature and pressure to
cause the electric potential difference of tourmaline crystals, so that the surrounding air ionization
occurs i.e. Negative oxygen ions in the air, so as to achieve the purpose of purifying the air, the
polyester fibers can have a far infrared thermal features, deodorant function, negative ion
emission function and antibacterial function, called "singular fibers.
Tourmaline also used in other fields:
1). High purity tourmaline gem material, made of all kinds of jewelry pendant necklaces, bracelets, etc.
2). Antibacterial deodorant wallpaper, floors, ceilings, furniture, interior paint and concrete. 3). The
antimicrobial preservation packaging material, such as plastic film, box and wrapping paper and
cardboard boxes, etc..
4). filter health fillers.
5). Water and air purification materials.
6). Toothpaste, cosmetics and other additives.
7). Antimicrobial coating or a coating material for electronic devices, household appliances, and daily life
goods.
8). Having antibacterial, sterilization, deodorization and other functions of the far-infrared radiation
composite ceramics.