Basalt: Igneous Rock - Pictures, Definition, Uses & MoreBasalt is an extrusive igneous rock. It is the bedrock of the ocean floor and also occurs on land in extensive lava flows.is basalt worth mining for,Which of these rocks/stones/minerals is worth most? - QuoraThey are very pretty. OK the thing about the value of rocks and minerals is that they don't . in geology, +35 years work experience in exploration and mining geology. .. From left to right I would identify these rocks as basalt, clouded quartz,.Is it worth building a mining rig now ? — Ethereum Community ForumHello, I plan on building a relatively small mining rig with ~48 mh/s.
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