georgeray1987 0 Posted September 27, 2013 Share Posted September 27, 2013 Found this in my backyard, well several pieces of it underneath the ground or laying on top. It has a silver inside but it's not magnetic. Anyone have any idea what it could be? I want to bring out the beauty by breaking them open or some how polishing them. Tips on cleaning them would be great. Thanks! Link to post Share on other sites
adam 3,114 Posted September 28, 2013 Share Posted September 28, 2013 Turn over your toilet tank lid and put a long scratch ( 2 inches) on it, and tell us what the color of the scratch is. Link to post Share on other sites
Johnno 64 Posted September 28, 2013 Share Posted September 28, 2013 I'm guessing a brown to black streak Link to post Share on other sites
georgeray1987 0 Posted October 1, 2013 Author Share Posted October 1, 2013 Are you serious about the scratch? Or is this a poo joke? Link to post Share on other sites
Au Seeker 3,086 Posted October 1, 2013 Share Posted October 1, 2013 Are you serious about the scratch? Or is this a poo joke? Yes they are serious, it's called a streak test, the color of the streak is but one the pieces of a puzzle to determine what you have. All minerals have a distinctive streak color, and many have the same color, but the streak color is but one of the characteristic of a mineral and many times it may not be the same color as the mineral, others are hardness, cleavage, (cleavage is how the material breaks), specific gravity, visible color, etc.. Link to post Share on other sites
The Found Dutchman 37 Posted October 2, 2013 Share Posted October 2, 2013 http://www.minerals.net/resource/property/Streak.aspxhttp://www.rockhounds.com/rockshop/streak1.htmlhttp://geology.csupomona.edu/mineral/streak.htm Link to post Share on other sites
georgeray1987 0 Posted October 22, 2013 Author Share Posted October 22, 2013 I tried the streak on the bottom of the toilet, but it leaves nothing but scratches. I tried to scratch it on the concrete and it leaves a dark grey almost black streak. When I put the powder from the scratch on my finger it is dark grey with tiny bits of sparkle in it. Any ideas? And thanks for the responses! Link to post Share on other sites
Haderly 96 Posted October 22, 2013 Share Posted October 22, 2013 schist would be my first guess. Knowing the general area it came from would greatly help narrow down the possibilities. Link to post Share on other sites
The Found Dutchman 37 Posted October 24, 2013 Share Posted October 24, 2013 Is it heavy for its size? Link to post Share on other sites
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