Amethyst in granite breccia, igneous; intrusive-plutonic, Thunder Bay, Ontario. Amethyst is Ontario's mineral emblem and the birthstone for February. The quartz crystals grew along cracks in granite.
Amethyst in granite breccia, igneous; intrusive-plutonic, Thunder Bay, Ontario. Amethyst is Ontario's mineral emblem and the birthstone for February. The quartz crystals grew along cracks in granite.
