i found a clear rock in my backyard. it looks like glass but it seems to be a rock. do you know it's name?
154854
its a f-----ing diamond or a crystal.
1082745
I worked for a manufacturing plant that supplied this type of glass to it's vendors. We called it "micro-sheet glass".  It came to us in pizza shaped boxes, with many sheets per box. Very thin stuff. It came in different thicknesses. Some as light and thin as a sheet of paper. There were many steps involved in manufacturing these parts before they actually left the plant. As far as if they cracked, I am not sure about how it would be replaced. But am sure there must be another type of protection for that.
631145
I have to admit im not too clued up on the geology of Maryland, however over here in the UK we have in the Mendip Hills something which resembles Obsidian but in fact its not. On a university field trip we went to an old smelt, where the guys used to smelt Limestone and the result was this black shiny stuff that looked identical to Obsidian. The stuff was strewn all over the place in big heaps. Confused the 'ell out of us students initially until we were told the what it actually was. I wish I could remember more about it but then again uni was a bit of a blur!
1086218
Its this new basketball that absorbs water! It Its looks really cool. It should still show it. I went after 3 or 4 days and it was still there. my brother showed me it 2 days before it would open. Then after 2 days I saw what it was. I looked a lot for it then got the answer and when I saw your question I answered it. So there you go!!
494583
A few years ago (1980s) a company was marketing a nuclear device for determining metal content of rocks.  This was a hand held device, and it worked very well.  I don't remember the manufacturer, but I know that it existed, and I saw it work.  The only problem was the nuclear source material.  In order to penetrate to any depth in the rock, it's nuclear source needed to be very powerful.  I think this was considered too much of a liability, and the company quit manufacturing the device.  I'm sure that you can still find one around.  I saw this demonstrated at a geologist's convention in Reno.  I think it was 1983 or 1984.
1011293
type quebec + geology + St. Elle d'orford in your browser.  Also, local universities can help.  I have stratigraphic charts, but none for Canada, just US (although they are called COSUNA, for Correlation of Stratigraphic Units of North America).  Keep looking..the rocks won't go away!  And, good luck.
244328
no a diamond is a type of rock.\n\na crystal is a type of glass.\n\nsimilar, but not quite the same.
601452
http://www.backyardnature.net/classify.htm\n\nthat will give you all of the answers.
679525
The rocks are no problem. You can go outside & find those.\n\nIgneous rocks include granite & diorite which are relatively easy to find. They are commonly used around driveways & railroad tracks.\n\nSedimentary rocks can be shale, sandstones, conglomerates, limestone, mudstones, etc. Depending on where you live it may be harder to find these.\n\nMetamorphic rocks might also be a problem unless you live somewhere near the mountains. If you have a piece of marble or slate used in flooring & countertops, they are easier to get a hold of.\n\nThe fossils are harder to get unless you actually go out to a riverbed or live near a site known to contain fossils. Your best bet would be to search the net for a reputable dealer or find a store near where you live.\n\nHappy rock & fossil hunting & good luck on the project. :)
147499
you have a cooooooooold rock
612762
A rolling stone gathers no moss - should be 'bryophitic', I think.\n\n"Nomadic fragments of igneous and metamorphic strata, having non-zero quantities of angular momentum, accumulate no forms of bryophitic plant life"
828905
i remember when I was 8 i got this really cool rock polishing thing, i dont know if they make them anymore but you put ugly old rocks from outside in the drum and cranked it for about three hours and they came out all polished. Is she into outdoor things? I really liked sports related stuff, or crafts. Ask your neice's mom, she might have a good idea!
633202
It is made by heating sand.\nGo to wikipedia.org\nThen type in just glass in the search engine.\nhttp://en.wikipedia.org/wiki/Glass
1122982
Debatable. It does just look like a bunch of rocks...what is stranger though, is why NASA keeps doctoring the raw images before releasing them to the public? A good example of this is the 'true' colour of mars. It's not a 'Red Planet' at all-it has a blue sky for one and why are some things masked over? Hmm...
552288
rocks are made up of minerals
518090
What you are observing is the oxidation and weathering of a rock. The outside of the rock is exposed to the elements and gets bleached out, the inside is protected by the outer layers.
699293
zonealarm rock lol\nnd beware of the web