Purple icon of Alberta Legislature Building

35cm tall pillar of brown sandstone

A 35 cm tall block of building stone made of sandstone from the Paskapoo Formation

Large limestone boulders for erosion control along river bank and around culvert

Local limestone boulders are used for erosion control to protect the bridge and riverbanks where Highway 11 crosses the Bighorn River, Alberta


Any kind of rock can be a source of stone. Each rock will have different physical and chemical characteristics which determines its suitability for a given purpose.

Age and Formation

In Alberta, sources of stone include 1600 - 2500 million year old granite of the Canadian Shield (not produced commercially), 56 - 245 million year old sandstone, 227 - 252 million year old siltstone, and 331 to 372 million year old limestone.

Important properties

When assessing a stone for a given purpose the following characteristics are considered: strength, hardness, resistance to weathering, binding properties, resistance to friction, size of block that can be produced, colour, grain size, texture, pattern, homogeneity, and impurities


Stone is be used in constructing buildings, countertops, and as decorative landscaping features. It is used for monuments and other works of art, and even kitchen tools like mortars and pestles. Although humans have only been around for about 2 million years, the oldest stone tools are over 3.3 million years old indicating that our hominid relatives used stone. Stone production contributed more to Alberta's economy in the past than it does today.


It’s a Fact!

The Alberta Legislature Building is made of Paskapoo Sandstone from a quarry that was located between Calgary and Cochrane.


Restoring the Alberta Legislature Building

Stone Tools Found in Alberta

Historic Sandstone Quarries in Calgary

Where to find stone

Map of Alberta showing where stone may be found throughout the province