Rocks & minerals reported in Massachusetts
42 rocks, minerals, gemstones, and fossils reported across 43 mapped rockhounding spots in Massachusetts. Each entry links to a field-ID guide; the state-specific links open the list of spots known to produce that material in Massachusetts.
Most-reported in Massachusetts
Ranked by the number of Massachusetts spots in this dataset that mention each material.
Berylcommonmineral · Mohs 7.5-8colorless, green, blue
Chalcopyritecommonmineral · Mohs 3.5-4brass-yellow, iridescent, gold
Jaspercommonmineral · Mohs 6.5-7red, yellow, brown
Agatecommonmineral · Mohs 6.5-7white, gray, blue
Smoky Quartzcommonmineral · Mohs 7brown, gray, black
Amethystcommongemstone · Mohs 7purple, violet, lavender
Chalcedonycommonmineral · Mohs 6.5-7white, gray, blue
Datolitecommonmineral · Mohs 5-5.5white, colorless, yellow
Galenacommonmineral · Mohs 2.5lead-gray
Hematitecommonmineral · Mohs 5.5-6.5steel-gray, black, reddish-brown
Prehnitecommonmineral · Mohs 6-6.5green, yellow-green, white
Pyritecommonmineral · Mohs 6-6.5brass-yellow, pale-gold
Where in Massachusetts to find each
State-specific spot lists. Each link opens the Massachusetts subset of mapped rockhounding spots for that mineral.
Pack the Massachusetts encyclopedia in your pocket
Open RockHoundR for offline lookups, mapped spots, and live land overlays.
