[Mazurka]

John - To get some blue schist samples you could try the cuttings along the side of the A5 if you are brave and or daft and don't mind explaining yourself to an inquisitive plod.  However, I suspect that the difference in composition / crystal habit of glaucophane (amphibole) as compared to olivine might also make a difference to its affinity for CO2.  Sadly for your plan (having read the other thread as well) unaltered olivine is not that easy to come by.

As a slight aside, I was always intrigued by the prospect of using super critical CO2 to carbonate concrete (effectively speeding up the natural re- uptake of CO2 and turning the concrete back into limestone) - which I imagine would have two benefits  one of sequestering some of the CO2 released in cement production and secondly making the concrete stronger

@others Experimental petrology? - One word for that - Perverts! []
@ Jim Bob - yes obscure folk dances intrigue me, one day i may even be able to perform one!

[Bass]

John

Great minds must think alike []

The USGS recently published a US map showing ultramafic rocks to absorb CO2...

http://pubs.usgs.gov/ds/414/

[Gigacore]

I have a small piece of olivine in my college bag.. it looks almost like gold

You can buy this mineral in glass industries who produce mineral glasses for watches..

[John Chapman (OP)]

Bass

That's really interesting. Sorry I didn't thank you earlier. The notifications on this thread seem to have stopped and I thought it had gone cold.

Great. I'm one step closer to conquering the world with this.

[John Chapman (OP)]

Hi Gigacore

You've gotta tell me where you got it! Where do you keep your college bag at night? Does it have a lock?

Seriously, though, what part of the world are you in and where did you get it?

In the meantime, I'll do a bit of research into the glass industry

[Gigacore]

@John Chapman.. lol!

Am in Bangalore, India. I got this mineral from geology department in our college. I will keep this for few more weeks and return as soon as I complete a project on it and few other minerals.

Our college geo department has contact with some mineral glass making industry and they supply such materials to them.. That's how I know where to get this mineral

[John Chapman (OP)]

Thanks for that Gigacore

You can rest easy tonight. Bangalore is too far for me to come to pinch it.

Thanks for the lead, though. I'll do some research.

[Krishka]

HI gigacore, did you find some olivine? I have some here I found a piece the other day down the Lizard and wondered what it was. I wanted to try experimenting with it to create heat also and was wondering how far you got with this