Rocks & minerals reported in Montana
54 rocks, minerals, gemstones, and fossils reported across 87 mapped rockhounding spots in Montana. Each entry links to a field-ID guide; the state-specific links open the list of spots known to produce that material in Montana.
Most-reported in Montana
Ranked by the number of Montana spots in this dataset that mention each material.
Goldcommonmineral · Mohs 2.5-3gold-yellow, pale yellow, orange-yellow
Agatecommonmineral · Mohs 6.5-7white, gray, blue
Sapphirecommongemstone · Mohs 9blue, yellow, pink
Chalcedonycommonmineral · Mohs 6.5-7white, gray, blue
Jaspercommonmineral · Mohs 6.5-7red, yellow, brown
Silveruncommonmineral · Mohs 2.5-3silver-white, gray, black
Petrified Woodcommonfossil · Mohs 6.5-7brown, red, yellow
Quartzcommonmineral · Mohs 7colorless, white, gray
Pyritecommonmineral · Mohs 6-6.5brass-yellow, pale-gold
Arsenopyritecommonmineral · Mohs 5.5-6silver-white, steel-gray
Kyanitecommonmineral · Mohs 4.5-7blue, colorless, white
Amethystcommongemstone · Mohs 7purple, violet, lavender
Where in Montana to find each
State-specific spot lists. Each link opens the Montana subset of mapped rockhounding spots for that mineral.
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