Canadian Wollastonite
Performance Aggregates
Over 20 million tonnes of high performance aggregates will be mined and processed over the life of the Saint Lawrence Wollastonite Deposit. These performance aggregates are approved for use in high strength/durability concretes, HL1 superpave hot mix asphalt applications, as CN Class 1 railway ballast stone, and in environmentally sensitive waterfront and gabion stone applications.
SUPERPAVE HOTMIX ASPHALT STONE
In 2011, Canadian Wollastonite’s (CW) ortho-gneiss ore was certified by the Ministry of Transportation for Ontario (MTO) for use in major highway surface construction. This ore is approved as an FC1 and FC2 DFC/Superpave and SMA friction aggregate and is listed on MTO’s “Designated Sources for Materials”.
CW’s ortho-gneiss is advantaged over many of the other sources in Ontario in that it is the province’s southernmost approved source of FC1 and FC2 aggregate.
RAILROAD BALLAST
CW produces class 1 and 2 railroad ballast stone and is well located to support the Toronto-Montreal-Ottawa corridors.
CONCRETE AND CONCRETE ASPHALT STONE
The tough and strong ortho-gneiss produced by the mine is appropriate as an aggregate for high-friction and high-strength applications of asphalt and concrete. The low freeze-thaw loss of CW’s gneiss adds to its value as a performance aggregate for tough weathering conditions.
RIP-RAP AND GABION
Other high-strength and friction applications for CW’s ortho-gneiss include rip-rap, rock protection, and gabion stone.
Canadian Wollastonite offers a wide selection of unique decorative stone options for interior and exterior uses. Our wollastonite deposit is bordered by granite providing us with two valuable landscape and dimension stone products to offer. In addition, the intense geologic activity at our mine site resulted in an abundance of visually engaging stones. We maintain a large inventory of boulders available for purchase. See below for dimension stone and landscape examples. Please contact us for more information.
COUNTERTOP & TILE
Canadian Wollastonite’s ore has a white crystalline appearance and a unique mineralogy that provides greater strength and durability than marble or granite. The deposit was originally formed between 1.8 and 1.25 billion years ago when Kingston and the surrounding region was covered by a warm seabed. For five hundred and fifty million years, sediments from marine organisms settled on the sea floor, eventually plunging deep into the earth under their own weight and aided by the massive tectonic changes taking place in Earth’s early formation. Subjected to extreme heat and pressure, and in the presence of silica fluids, the wollastonite was formed. This incredible process can be seen in the rock itself, with molten minerals flowing through it.
Our deposit is the only known wollastonite deposit in the world producing dimension products. We ship rough cut stone slabs or specially selected boulders from our mine site.
WOLLASTONITE AND GRANITE LANDSCAPE BOULDERS
Canadian Wollastonite offers a wide selection of wollastonite and granite boulders. The unique geological features of our deposit result in a variety of appealing patterns and colours.
NON-TOXIC CARBON SEQUESTERING TRACTION SANDS
The sharp pointed shape of wollastonite sands combined with environmental benefits show strong potential for the use as a traction sand for walkway and road surfaces. While wollastonite does not chemically melt ice, upon contact there is an ionic exchange which causes the crystals to stick to the ice, immediately increasing traction at all temperatures and making it an excellent alternative to salt sand mixes.
Source: https://www.canadianwollastonite.com/applications/performance-aggregates/
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