🪨 Basalt
Common volcanic rock forming much of the ocean floor and volcanic landscapes. Hawaii's volcanic geology is primarily basaltic, containing olivine and other minerals.
Best Places to Find Basalt
Hawaii Lava Tube / Volcanic Specimens
Volcano, Hawaii · Public Land
Volcano National Park areas (collecting prohibited inside park) but adjacent areas for lava rock, olivine, and volcanic glass specimens.
Punalu'u Black Sand Beach
Naalehu, Hawaii · Public Beach
Famous black sand beach on the Big Island. The sand is pulverized basalt from volcanic activity. Also known for resident green sea turtles.
Haleakala Volcanic Specimens
Kula, Hawaii · National Park
Haleakala National Park on Maui for volcanic rock formations and olivine crystals. Collecting is prohibited in the National Park but adjacent areas ma...