Rocks & minerals reported in Maryland
42 rocks, minerals, gemstones, and fossils reported across 38 mapped rockhounding spots in Maryland. Each entry links to a field-ID guide; the state-specific links open the list of spots known to produce that material in Maryland.
Most-reported in Maryland
Ranked by the number of Maryland spots in this dataset that mention each material.
Quartzcommonmineral · Mohs 7colorless, white, gray
Serpentinecommonmineral · Mohs 2.5-5.5green, yellow, brown
Chromitecommonmineral · Mohs 5.5black, brownish-black
Coppercommonmineral · Mohs 2.5-3copper-red, reddish-brown
Malachitecommonmineral · Mohs 3.5-4bright green, dark green, emerald green
Pyritecommonmineral · Mohs 6-6.5brass-yellow, pale-gold
Soapstonecommonmetamorphic · Mohs 1gray, green, white
Tourmalinecommonmineral · Mohs 7-7.5black, green, pink
Actinolitecommonmineral · Mohs 5.5-6green, dark green, blackish-green
Ambercommonfossil · Mohs 2-2.5yellow, orange, brown
Berylcommonmineral · Mohs 7.5-8colorless, green, blue
Bornitecommonmineral · Mohs 3copper red, bronze, iridescent blue
Where in Maryland to find each
State-specific spot lists. Each link opens the Maryland subset of mapped rockhounding spots for that mineral.
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