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The microgranite's unusual composition and crystalline texture make it particularly hard and resistant to impact, making this rock a favoured material for the manufacture of curling stones. [18] The "blue hone" variety is now used for the lower part of the stone which contacts the ice (the running band) while the "common green" variety is used ...
The curling stone (also sometimes called a rock in North America) is made of granite and is specified by the World Curling Federation, which requires a weight between 19.96 and 17.24 kilograms (44 and 38 lb), a maximum circumference of 914 millimetres (36 in), and a minimum height of 114 millimetres (4 + 1 ⁄ 2 in). [31]
The riebeckite granite known as ailsite, found on the island of Ailsa Craig in western Scotland, is prized for its use in the manufacture of curling stones. Riebeckite granite was used for the facing stones of the Canton Viaduct from Moyles Quarry (a.k.a. Canton Viaduct Quarry) now part of Borderland State Park in Massachusetts, US.
For the main body of each curling stone Kays uses Ailsa Craig Common Green granite. Kays inserts Ailsa Craig Blue Hone granite "Ailserts" as the running surface of the stone. [12] Due to its status as a wildlife reserve by the Royal Society for the Protection of Birds, blasting and quarrying at Ailsa Craig is restricted. In 2002, Kays of ...
Building stone, a building material; Dimension stone, stone fabricated to specific sizes or shapes; ... Curling stone, used in the sport of curling; Stone skipping;
Explore the sport of curling before the Beijing 2022 Olympics in this 3D augmented reality experience.