We actually have discussed it in great lengths in our team whether use Orbitec's JSC-1, or to develop our own lunar soil model for our rover testing bed. Our geologists say the same as Bradley: it's not as sharp as the real thing. But if we wanted to use some really sharp dusty material, that always forms clumps and is not as fine JSC-1. So yeah, this stuff is the closest you can get apparently.<br>
<br><div class="gmail_quote">On 16 April 2012 19:01, cole santos <span dir="ltr"><<a href="mailto:cksantos85@gmail.com">cksantos85@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Is its chemical composition accurate?<br>
<div class="HOEnZb"><div class="h5"><br>
On Mon, Apr 16, 2012 at 6:59 AM, Bradley Grzesiak <<a href="mailto:listrophy@gmail.com">listrophy@gmail.com</a>> wrote:<br>
> Speaking as a former ORBITEC employee and lunar mining engineer, I can say a<br>
> few things about the regolith simulant.<br>
><br>
> First, it's *really* fine. Like affect-your-lungs fine. I recommend a simple<br>
> $2 paper mask, which should suffice. Second, it's not quite as<br>
> microscopically jagged as the real stuff, but they do a pretty good job.<br>
> Basically, you're not really going to get any agglutinates (fused grains)<br>
> that you would from real regolith.<br>
><br>
> But it's the closest (by far) you'll get anywhere. And no, they don't just<br>
> dig it up and ship it out. There's quite a bit of post-processing to get the<br>
> correct grain-size distribution.<br>
><br>
> :brad<br>
><br>
><br>
> On Mon, Apr 16, 2012 at 11:49 AM, cole santos <<a href="mailto:cksantos85@gmail.com">cksantos85@gmail.com</a>> wrote:<br>
>><br>
>> moon regolith, epic, thanks for the link<br>
>><br>
>> that could be useful for many projects. we have some areas here in<br>
>> hawaii that are commonly used as moon and mars simulation areas.<br>
>> Mostly old lava flows.<br>
>><br>
>> On Mon, Apr 16, 2012 at 6:27 AM, Luke Weston <<a href="mailto:reindeerflotilla@gmail.com">reindeerflotilla@gmail.com</a>><br>
>> wrote:<br>
>> >> What would be interesting: Grow bacteria on nothing but moon soil.<br>
>> >> Taake<br>
>> >> some soil, add water, atmosphere and bacteria. Will they thrive? -> If<br>
>> >> so,<br>
>> >> phosphorus etc. is in the moon soil.<br>
>> >><br>
>> ><br>
>> > We already know a great deal about the geology and mineralogy of the<br>
>> > moon, and the chemical composition of the lunar regolith.<br>
>> ><br>
>> > There's no wheel there that needs to be reinvented, and no fundamental<br>
>> > new discovery that needs to be made.<br>
>> ><br>
>> > <a href="http://en.wikipedia.org/wiki/Lunar_soil" target="_blank">http://en.wikipedia.org/wiki/Lunar_soil</a><br>
>> ><br>
>> > You can also commercially buy standard JSC-1A lunar regolith simulant<br>
>> > from Orbitec, which is interesting:<br>
>> ><br>
>> > <a href="http://www.orbitec.com/store/simulant.html" target="_blank">http://www.orbitec.com/store/simulant.html</a><br>
>> ><br>
>> > They even have Mars regolith simulant too :)<br>
>> ><br>
>> > There is some existing research and literature in this area,<br>
>> > indicating that certain types of life, such as cyanobacteria, will<br>
>> > grow on lunar regolith (or simulant) when water (and other factors<br>
>> > such as light, if appropriate) is added along with an appropriate<br>
>> > artificial atmosphere.<br>
>> ><br>
>> > For example:<br>
>> ><br>
>> > <a href="http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1673.pdf" target="_blank">http://www.lpi.usra.edu/meetings/lpsc2008/pdf/1673.pdf</a><br>
>> ><br>
>> > If you got some regolith simulant, autoclaved it or something to make<br>
>> > sure it's sterile (along with all your other equipment and vessel, got<br>
>> > some sort of benign sample of appropriate bacteria or cyanobacteria<br>
>> > from an appropriate biology supplier (ATCC or whatever the go-to<br>
>> > people are for that sort of thing these days) and supplied an<br>
>> > appropriate gaseous atmosphere from a gas cylinder, and added some<br>
>> > distilled water, and supplied some light on the vessel, I suppose it<br>
>> > wouldn't be too difficult to reproduce such an experiment.<br>
>> > Interesting.<br>
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><br>
><br>
><br>
><br>
> --<br>
> Bradley Grzesiak<br>
> co-founder, bendyworks llc<br>
> <a href="http://bendyworks.com/" target="_blank">http://bendyworks.com/</a><br>
><br>
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