Human Resonance: Magnetic Basalt of the Hummingbird Pyramid
Channel: humanresonance
Date: 2015-04-17

Artificial magnetic basalt pavement stones from walkways of the Hummingbird Pyramid in La Maná, Ecuador contain fine particles of ferromagnetic iron and nickel --as well as pyromagnetic pyrite.
http://www.human-resonance.org/magnetic_basalt.html