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Author Topic: Heat resistant dark mineral wanted.  (Read 10095 times)

Offline Titanscape

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Heat resistant dark mineral wanted.
« on: 15/04/2004 19:48:55 »
I am searching for a heat resistant dark odourless granulatable mineral. Carbon won't do for it would burn in the atmosphere. Any ideas?

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Offline tweener

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Re: Heat resistant dark mineral wanted.
« Reply #1 on: 16/04/2004 02:34:25 »
How fine do you need it and how much do you need?  Several types of rock and lava come to mind, but if you need a fine powder or very much, it could be a problem.

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Offline Titanscape

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Re: Heat resistant dark mineral wanted.
« Reply #2 on: 16/04/2004 21:21:54 »
It has to absorb regular blasts from a hot laser beam. Stones or sand grain size would be good. All that comes to mind is a stone we use around railway tracks here in Australia called blue metal.

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Offline Rabbit

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Re: Heat resistant dark mineral wanted.
« Reply #3 on: 16/04/2004 22:18:30 »
Ehhh, Titanscape, what are you actually DOING with the laser beam and why does the rock or whatever have to be odourless? I've tried to guess this for myself but I just come up with weird ideas and (maybe) off mark. So, what IS it you want to do....
 

Offline tweener

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Re: Heat resistant dark mineral wanted.
« Reply #4 on: 17/04/2004 02:46:04 »
You can go to a garden or landscape shop and get lava rock, or several other types of rocks that would work.  If you get the softer, very porous, lava rocks (I don't know the technical name, but they'll be labeled "lava rock") you can probably crush them down to a smaller size if you want.  It sounds like you don't need a large quantity, but they will sell them in good size bags.

So, what sort of laser beam?  What are you up to?  We really need to know, as this is our only excitement in life - finding out what other NS forum members are up to.

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Offline MayoFlyFarmer

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Re: Heat resistant dark mineral wanted.
« Reply #5 on: 17/04/2004 08:57:59 »
I'm worried.....   this sounds like a pretty crazy experiment!!

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Offline Titanscape

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Re: Heat resistant dark mineral wanted.
« Reply #6 on: 17/04/2004 20:41:44 »
I think I like Titanium dioxide sand too. It is needed because the hot laser is part of a denaturing process. And it would need either go out into the sky or be absorbed by a dark mineral which is safe to be around.

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Offline neilep

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Re: Heat resistant dark mineral wanted.
« Reply #7 on: 18/04/2004 23:46:12 »
Any one of my wifes cakes will do the job !!!....I thank my lucky stars she never reads any of this !!        

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Offline tweener

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Re: Heat resistant dark mineral wanted.
« Reply #8 on: 16/04/2004 02:34:25 »
How fine do you need it and how much do you need?  Several types of rock and lava come to mind, but if you need a fine powder or very much, it could be a problem.

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John - The Eternal Pessimist.
 

Offline Titanscape

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Re: Heat resistant dark mineral wanted.
« Reply #9 on: 16/04/2004 21:21:54 »
It has to absorb regular blasts from a hot laser beam. Stones or sand grain size would be good. All that comes to mind is a stone we use around railway tracks here in Australia called blue metal.

Titanscape
 

Offline Rabbit

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Re: Heat resistant dark mineral wanted.
« Reply #10 on: 16/04/2004 22:18:30 »
Ehhh, Titanscape, what are you actually DOING with the laser beam and why does the rock or whatever have to be odourless? I've tried to guess this for myself but I just come up with weird ideas and (maybe) off mark. So, what IS it you want to do....
 

Offline tweener

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Re: Heat resistant dark mineral wanted.
« Reply #11 on: 17/04/2004 02:46:04 »
You can go to a garden or landscape shop and get lava rock, or several other types of rocks that would work.  If you get the softer, very porous, lava rocks (I don't know the technical name, but they'll be labeled "lava rock") you can probably crush them down to a smaller size if you want.  It sounds like you don't need a large quantity, but they will sell them in good size bags.

So, what sort of laser beam?  What are you up to?  We really need to know, as this is our only excitement in life - finding out what other NS forum members are up to.

----
John - The Eternal Pessimist.
 

Offline MayoFlyFarmer

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Re: Heat resistant dark mineral wanted.
« Reply #12 on: 17/04/2004 08:57:59 »
I'm worried.....   this sounds like a pretty crazy experiment!!

Lift your skinny fists, like antennas to hevan!
 

Offline Titanscape

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Re: Heat resistant dark mineral wanted.
« Reply #13 on: 17/04/2004 20:41:44 »
I think I like Titanium dioxide sand too. It is needed because the hot laser is part of a denaturing process. And it would need either go out into the sky or be absorbed by a dark mineral which is safe to be around.

Titanscape
 

Offline neilep

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Re: Heat resistant dark mineral wanted.
« Reply #14 on: 18/04/2004 23:46:12 »
Any one of my wifes cakes will do the job !!!....I thank my lucky stars she never reads any of this !!        

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Offline Donnah

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Re: Heat resistant dark mineral wanted.
« Reply #15 on: 19/04/2004 23:01:20 »
You should thank your lucky stars Neil.  You'd likely be seeing stars if your wife read the thread about you wanting to breed with aliens.
 

Offline neilep

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Re: Heat resistant dark mineral wanted.
« Reply #16 on: 19/04/2004 23:13:50 »
Just doing my bit for humanity and in the name of Science Donnah !!...*blushing but cheeky*

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Offline Exodus

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Re: Heat resistant dark mineral wanted.
« Reply #17 on: 19/04/2004 23:57:20 »
quote:
Originally posted by tweener

How fine do you need it and how much do you need?  Several types of rock and lava come to mind, but if you need a fine powder or very much, it could be a problem.

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John - The Eternal Pessimist.



If we are talking resistant volcanic rocks there are a few that come to mind... If it must be dark then volcanic glass (Obsidian) is a possibility. Unsure of what "lava rock" is classified as, if it is pummice the i wouldnt suggest it would be particularly resistant, it is however the only volcanic rock you'll easily be able to make into a powder. You could use a black volcanic sand although i'm not sure where you'd pick that up from... I'f i'd have known i could have grabbed you some off the beach while i was in Tenerife :D

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Offline tweener

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Re: Heat resistant dark mineral wanted.
« Reply #18 on: 20/04/2004 02:28:39 »
I thought of obsidian, but then thought that it might be too reflective, thus sending shards of laser beam all over the place.  I was thinking of the black pummice that looks like a hard foam.  It has matte surfaces and is relatively soft and easy to crush.  I'm sure there are better substances, but I don't know what they are.

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Offline chris

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Re: Heat resistant dark mineral wanted.
« Reply #19 on: 20/04/2004 05:41:15 »
What about the black tiles used to coat the underside of the space shuttle ? What are they made from ?

Chris

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Offline Exodus

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Re: Heat resistant dark mineral wanted.
« Reply #20 on: 20/04/2004 23:42:12 »
quote:
Originally posted by tweener

I thought of obsidian, but then thought that it might be too reflective, thus sending shards of laser beam all over the place.  I was thinking of the black pummice that looks like a hard foam.  It has matte surfaces and is relatively soft and easy to crush.  I'm sure there are better substances, but I don't know what they are.

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John - The Eternal Pessimist.



You can buy some black pumice off of uncle sam ;)
http://www.uncleharrys.com/Merchant2/merchant.mv?Screen=PROD&Store_Code=UHNP&Product_Code=26110&Category_Code=SP-26

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Offline tweener

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Re: Heat resistant dark mineral wanted.
« Reply #21 on: 21/04/2004 03:33:18 »
I'm not the one buying here.  I think this is needed in Austrailia.  

I haven't had a chance to build my megawatt laser yet.

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Re: Heat resistant dark mineral wanted.
« Reply #21 on: 21/04/2004 03:33:18 »

 

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