| Specification | Details |
|---|
| Stone Type | Queenston limestone, crinoidal calcitic dolomite or dolomitic limestone |
| Geological Formation | Lockport dolomite formation of Silurian age, Gasport member |
| Origin | Niagara escarpment, two miles west of Queenston, Lincoln county, Ontario |
| Primary Composition | Crinoidal calcitic dolomite or dolomitic limestone |
| Color Range | Light grey to buff, weathers to silver-grey |
| Texture | Medium-crystalline crinoidal |
| Finish Options | Sawn, machined, carved, split-faced ashlar |
| Water Absorption | 0.81 to 0.97 percent |
| Compressive Strength | 14,500 to 15,625 psi (Average: 14,900 psi) |
| Density | 163 to 166 lbs per cubic foot |
| Abrasion Resistance | Abrasive hardness of 15.4 to 18.7 |
| Weather Resistance | Very durable with an excellent state of preservation in the oldest structures |
| Workability | Readily sawn, machined, and carved |
| Common Applications | General building purposes, bridge abutments, monuments, railroad bridges, and culverts |
| Historic Use | Queenston International bridge, Sir Isaac Brock monument, Welland canals, East Block of the Parliament Buildings in Toronto |
| Delivery Format | Random mill blocks 4 to 20 tons in size, split-faced ashlar |
