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Uses for 15 yards of lava rock.

 
Matthew McCoul
Posts: 72
Location: Southeast Michigan
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I have the opportunity to get 15 yards of red, landscapring-style lava rock (mafic foamed basalt) delivered free.

So far, i've come up with a few potential uses:

-Soil additive to help aeration
-Soil additive for minerals (iron, magnesium)
-Aggregate in concrete?
-Some kind of insulation? (it is porous)
-Mulch (it doesn't have to be completely weed-free)

Can anyone think of some other uses? Or clever ways to apply the ideas above? I'm thinking about getting it but I'm curious what other ways i could put it to use.

I'm on a flat 2 acres with a roughly 50 by 70 pond. Often wet with a high water table and occasional flooding (every 3-5 years). Zone 5/6 MI, pretty cold. Low elevation.
 
Ian Rule
Posts: 75
Location: Nevada County, CA
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Hey Matt. Not exactly an answer, but perhaps relevant - my landlord dumped a mountain of basaltic reds behind our apartment building years ago and.... forgot about them, and since they refuse to let me alter the yard, there they have stayed. However, I take them for use in the garden (elsewhere), and noticed after a winter of sitting cozy, they almost totally disintegrated in the middle, and I couldn't find a handful that wasn't mostly comprised of earthworms. It was only the bottom/middle of the pile that had decayed into some tasty vermiculture, but I thought it was cool.

Wouldn't have guessed pumice becomes worm food that easily, but its clear they love the crap out of something in that pile....
 
2017 Permaculture Design Course at Wheaton Labs
http://richsoil.com/pdc
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