Dallasite is a breccia made of quartz, epidote, altered basalt and pumpellyite. The stone dallasite is named after Dallas Road, Victoria, British Columbia. It is considered the unofficial stone of British Columbia’s capital city. Dallasite is found in Triassic volcanic rocks of Vancouver Island and is considered the third most important gem material in British Columbia.
References
Dallasite Wikipedia(Text) CC BY-SA