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Post by Psycho on Sept 28, 2016 10:06:57 GMT -5
never seen anything like this in Michigan so I grabbed it. red and tan colors, very hard to cut. Any ideas ?
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Post by roy on Sept 28, 2016 10:23:05 GMT -5
that looks like tempskya from the greenhorn mtn in oregon
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 28, 2016 14:54:43 GMT -5
Any diagnostic?
scratch test?
Acid test if scratches with nail?
Two pics may not be enough.
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Post by Psycho on Sept 28, 2016 18:16:21 GMT -5
OK shotgunner help me understand which diagnostics to do and with what, is nail type, acid type ? Then I know what to do from here on out.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Sept 28, 2016 18:23:05 GMT -5
OK shotgunner help me understand which diagnostics to do and with what, is nail type, acid type ? Then I know what to do from here on out. Steel doesn't scratch agate Jasper buy does scratch marble and other soft stuff. If it makes a scratch them we use hydrochloric acid to see if it bubbles or not. These tests rule out many things very quickly.
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Post by Psycho on Sept 28, 2016 18:35:42 GMT -5
OK. I will have to get acid. Where can I get that ? Also do I really dig in while scratching the material or just lightly ? I'm sorry for so many questions, and I am very appreciative for the help.
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ziggy
spending too much on rocks
Member since June 2016
Posts: 483
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Post by ziggy on Sept 28, 2016 19:24:03 GMT -5
never seen anything like this in Michigan so I grabbed it. red and tan colors, very hard to cut. Any ideas ? Did you buy it or find it?
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Post by Psycho on Sept 28, 2016 19:27:54 GMT -5
No I found it. I was a the dr office and it caught my eye. This is a very small piece it's roughly 6x6x4 inches. And heavy
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ziggy
spending too much on rocks
Member since June 2016
Posts: 483
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Post by ziggy on Sept 28, 2016 20:51:24 GMT -5
No I found it. I was a the dr office and it caught my eye. This is a very small piece it's roughly 6x6x4 inches. And heavy So it was like, in the landscaping or something? In other words, you weren't technically out rockhounding in the wild somewhere? The reason I asked is because location of find can help identify what a rock is....unless it's from some landscape rocks. If you bought it I would tell you to ask the seller. If you found it on a rockhounding trip, say, to a glacial till area of Michigan it would even help narrow things down. If it was part of a landscape rock arrangement in the Dr. office parking lot I am wasting my time trying to identify by location and could be almost anything that is used as such. Unfortunately it looks like your camera focused more on the keyboard and not the rock in your second picture and in the first picture the colors are overwhelmed by flash blowout so visual I.D. might be fairly difficult for many here with the photos provided. When performing a scratch test with a nail just scrape the rock solidly. If the rock is softer a scratch will be made on the rock that you can feel and plainly see. Not to be mistaken for a color streak left by the nail and is not a scratch which you can't feel. Mohs Hardness of Common Objects fingernail 2 to 2.5 copper 3 nail 4 <<<Notice: the nail isn't very hard. If it fails to scratch try a file to narrow the hardness down some more. glass 5.5 knife blade 5 to 6.5 steel file 6.5 streak plate 6.5 to 7 quartz 7 If it turns out to be harder than a file I would try quartz. Your rock if it resists the file might be some form of quartzite which is actually quite hard.
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Post by Psycho on Sept 29, 2016 3:14:38 GMT -5
Nail scratch just left a color streak, nothing's significant. It was found in the landscaping mix on the edge of a parking area.
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,472
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Post by Sabre52 on Sept 29, 2016 9:04:54 GMT -5
Looks like quartzite to me. Comes in all colors depending on which mineral salts infuse it....Mel
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ziggy
spending too much on rocks
Member since June 2016
Posts: 483
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Post by ziggy on Sept 29, 2016 20:04:45 GMT -5
Looks like quartzite to me. Comes in all colors depending on which mineral salts infuse it....Mel From what I can tell with your photos, quartzite would be first on my list too because it sort of looks like it plus yours is apparently pretty hard as well.
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Post by Psycho on Sept 30, 2016 3:17:09 GMT -5
I would agree. Thanks everyone for the help !
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