DILLON, Mont. — Molten granite formed the Pioneer Mountain Range in southwest Montana about 72-million years ago. As the granite cooled, water carried quartz and other minerals through the rocks and ...
image: If you visit Yosemite National Park in California, it's impossible to miss the granite. You'll find the tough, grainy rock in the park's spectacular cliffs, soaring domes, and ubiquitous ...
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