- Wollastonite is a
calcium inosilicate mineral (CaSiO3) that may contain small amounts of
iron, magnesium, and manganese substituting for calcium. It is usually
white. It forms when impure limestone or dolostone is subjected to high
temperature and pressure sometimes in the presence of silica-bearing
fluids as in skarns or contact metamorphic rocks. Associated minerals
include garnets, vesuvianite, diopside, tremolite, epidote, plagioclase
feldspar, and calcite. It is named after the English chemist and
mineralogist William Hyde Wollaston.
- The compositions of
naturally occurring wollastonite and bustamites how that a narrow
composition gap separate the two minerals on-free wollastonite from
Franklin, New Jersey , with up to 8.I percent MnO coexistsw ith
bustamitew ith 12.3 percent MnO and 0 7 percent F eO.The maximum iron
content found in wollastoniteis 2.23 percent FeO in a specimenfr om
Scawt Hill, Ireland.The limiting composition recorded for
ferrobustamiteis 9.29 percent FeO, 1.22 percent MnO, and 38.86 percent
CaO in a specimen from Skye, Scotland.
- Wollastonite can be
used in a variety of ceramic applications including ceramic glazes and
bodies, enamels, frits, fluxes and in sanitaryware. This industrial
mineral is a source of CaO to alkaline glaze formulations to improve the
strength of the glaze. Wollastonite also has a low LOI (< 1%) which
gives minimal gas evolution during firing resulting in a smooth surface
with diminished pinholing.
- Wollastonite has
found application as a substitute for asbestos in fire-resistant
building products used in the construction industry. As a functional
additive, wollastonite improves flexural and impact strengths. Its low
thermal conductivity and high aspect ratio structure also makes
wollastonite an attractive addition for applications requiring fire
resistance. Wollastonite finds application in interior and exterior
construction boards, roof tiles, shaped insulation products, sheets,
panels and sidings.
- The vitality of the
U.S. economy depends on key mineral resources. In the course of a
lifetime, each American will use 3.5 million pounds of minerals, metals,
and fuels. Every year, 46,000 pounds of new minerals including 7,500
pounds of coal energy must be provided for every person in the U.S. to
maintain our standard of living. Low-cost coal is used to generate a
large portion of the nation's electricity supply, helping to keep U.S.
electricity costs among the lowest in the world and thereby enhancing
the competitiveness of U.S. industry.
- Wollastonite is a
mineral with an increasing range of industrial applications. The main
producer is China. At Ethiudna, in South Australia’s northeast,
wollastonite occurs associated with diopside marbles of the
Palaeoproterozoic, Willyama Supergroup. These are limestones,
metamophosed in response to high heat flows adjacent to the Crockers
Well Granites. A mining lease (ML 5780) over the main Lady Katherine
occurrence, has an Indicated Resource of 600,000 tonnes and is currently
held by Minerals Corporation Ltd.
- Wollastonite
production in India is currently from the Belkapahar deposit in the
state of Rajasthan by Wolkem Pvt. Ltd. Wollastonite is found within
limestone horizons which have been replaced by pyroxenites and gneiss in
association with contact metamorphism . After hand sorting, the
wollastonite has few impurities and is of high aspect ratio. Reserves
are very large and production currently is via open-pit mining.
- While Wollastonite
production from North America dominates the world market, a significant
and increasing share of production comes from Europe and Asia,
specifically Finland, India, and China. Oy Partek AB produces
wollastonite from an open pit at the Lappenranta deposit in southeastern
Finland in conjunction with limestone production for cement manufacture
. Wollastonite occurs within an elliptical Archean limestone mass in a
zone some 650 m long by about 50 m wide. The deposit is thought to
have been formed through contact metamorphism by the enclosing younger
granite.
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General
Information
- Wollastonite
- History of
wollastonite
- Wollastonite Gallery
-
Calcium metasilicate (wollastonite)
- Mineral description
of wollastonite
- General Wollastonite
information
- Compositional limits
of Wollastonite
- Overview of
wollastonite
Manufacturing
Technology
- Manufacturing
overview of wollastonite
- Preparation of ultra
fine high aspect ratio wollastonite powders
- Preparation of
nanocrystalline macroporous wollastonite ceramics
- Occurence of
wollastonite in the Allende meteorite
- Formation of
wollastonite by chemically reactive fluid flow
- Wollastonite
Technologies
- Iron analysis in
wollastonite
- Solution combustion
derived nanocrystalline macroporous wollastonite ceramics
- Mechanisms of
corrosion protection with surface-treated wollastonite pigments
- Combining cellulose
fibers and wollastonite mineral fibers into a Nylon 6 matrix
- Injection moulding of
titanium metal and AW- PMMA composite powders
- Reduction of CO2
emissions by producing calcium carbonates from calcium silicates
- An AC impedance
spectroscopy study of freezing phenomena in wollastonite micro-fibre
reinforced cement paste
- Synthesis and
sintering behavior of wollastonite fabricated by a polymer solution
technique
- Chemical durability
of β-wollastonite-reinforced glass-ceramics
Functions and Properties
- Overview of
properties of wollastonite
-
Wollastonite-Mineral properties and uses
- Physical
properties of wollastonite
- Effect of
wollastonite on operational characteristics of AWS E6013 electrodes
- The adhesion
phenomena in wollastonite composites
- Wollastonite
reinforced polypropylene composites
- Geochemistry and
oxygen isotopic composition of the Canton Saint-Onge wollastonite
deposit
Company
Profiles
- Associated
Ceramics Technology, Inc.
- Fibertec Inc.
- Jilin Shanwei
Wollastonite Mining Co., Ltd.
- Nanchuan
Minerals Group
- NYCO
- PI Industries
Ltd.
- Raj Purohit
Group of Enterprises
- Wolkem India
Limited
Consultants
- Experts
in minerals and coal processing
- George C.
Hawley & Associates
- Mineral
Industry Consultants Association
- Eppler
Associates
-
Peter
W. Harben Inc.
- SGS
Minerals Services
- VB
Ceramic Consultants
- Vincent
Lindsey
Patent
-
Surface pacified wollastonite
-
Reinforcement of ceramic bodies with wollastonite
-
Modified flux composition for cement
-
Reinforced cement sheet product containing Wollastonite
for Reduced Shrinkage
-
Crack- Resistance epoxy Resin Molding Composition with
Wollastonite
-
Synthesis of Wollastonite from Natural Materials without
Fusion
-
Method for the Production of Synthetic Wollastonite
Material
-
Liquid Epoxy Resin Composition Containing Wollastonite
and Calcite
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Applications
- The importance of
industrial minerals in our everyday lives
- Overview of
applications of wollastonite
- Manifold uses of
wollastonite
- Wollastonite-one
mineral, a world of applications
- Wollastonite for
products of aluminum industry
- Applications of
wollastonite composites for microcellular injection molding
- Effectiveness of
wollastonite in powder coatings
- Wollastonite-A
versatile functional filler
- Wollastonite fibers
in vitro generate reactive oxygen species
- Porous
apatite-wollastonite glass-ceramic as an intramedullary plug
Material
Safety Data Sheet
- Wollastonite
- Deck plant
material
- GSP 1790A
- Elastomeric
aluminum roof coating
- High density
filler
- NYAD
- Transite HT
- Vansil W-10
- Safety data for
wollastonite
Projects and Products
- Glasses,
glazes and ceramics – Recognition of ancient technology from the
raman spectra
- Enhanced
corrosion control in small water systems using calcium silicate
contactors
- ISK
wollastonite project
- The st.
Lawrence wollastonite project
- A low
emission technology for the production of tailored silica from
wollastonite
-
Thermochemical optimization of float glass composition
- New
wollastonite products for engineered plastic, vertical body
panels & bumper/fascia modules
- Wollastonite
products list
Market
- Mining in
India
- Overview
of wollastonite market
-
Wollastonite–A versatile industrial mineral
- Energy
and economic considerations for ex-situ aqueous mineral
carbonation
- Future
market of wollastonite
Report
-
Overview of mining
-
Wollastonite in South Australia
-
Wollastonite in Tasmania
-
Toxicology and epidemiology of Wollastonite
-
Vesuvianite–wollastonite–grossular-bearing calc-silicate
rock near Tatapani
-
Metastable non-stoichiometric diopside and
Mg-wollastonite
- The
mining sector potential along Nambia
-
Wollastonite statistics
-
Crystal structures of wollastonite and pectolite
-
Tannin block study using wollastonite products
-
Fording Inc. annual report
-
Wollastonite market in 2002
-
Wollastonite market in 2003
-
Wollastonite market in 2004
-
Wollastonite market in 2005
-
Wollastonite market in 2006
Manufacturers, Suppliers and
Buyers
-
QUALITeSOLUTIONS
-
Wollastonite suppliers directory
-
China suppliers of wollastonite
-
Foreign exporters of wollastonite
-
Wollastonite trade leads
-
Indian exporters of Wollastonite
-
Sell trade leads of Wollastonite
-
Wollastonite sellers
-
Wollastonite sell offers
-
Wollastonite suppliers
-
Wollastonite selling leads
-
Foreign importers of Wollastonite
-
Wollastonite buyers list
Safety and Guides
-
Toxicity of wollastonite as compared to amosite
asbestos
-
Wollastonite application guide
-
Process handling overview of wollastonite
-
References on Wollastonite
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