My grandson has some Ko'olau basalt. It belonged to TTBrown, and came our way via Andrew Bolland when he wanted to get rid of it. My miner friend, Bob, RIP, got Donovan interested in rocks and minerals. They can't compete with Poker On and Minecraft, but he was able to do a really nice science fair project a couple of years ago on fluorescent rocks and minerals. He even included uranium.
Shasta