vayank5150
starting to spend too much on rocks
Member since January 2017
Posts: 118
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Post by vayank5150 on Jan 31, 2017 19:57:22 GMT -5
My daughter brought home this from her school playground today. It is different from anything else she has brought home. In my living room light, it appears to be blue-ish/green in color and was wondering what it might be, and whether or not it might be good for tumbling? 20170131_194507 by Michael Aldrich, on Flickr 20170131_194521 by Michael Aldrich, on Flickr
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sdrockgal
noticing nice landscape pebbles
Member since December 2016
Posts: 87
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Post by sdrockgal on Jan 31, 2017 21:27:19 GMT -5
I have no idea what it is but you might as well throw it in the tumbler. Even if it doesn't shine it will smooth out.
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napoleonrags
Cave Dweller
Member since October 2015
Posts: 474
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Post by napoleonrags on Jan 31, 2017 21:55:34 GMT -5
Nice stone. Throw it the roller. Check often to note if it's soft and reduces quickly. Pull it when it's right.
What does your kid want to do with it?
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Post by spiceman on Jan 31, 2017 22:16:02 GMT -5
What's the hardness?
Guessing flourite.
If it is, it's difficult to get a good shine.
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notjustone
spending too much on rocks
Member since January 2017
Posts: 426
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Post by notjustone on Jan 31, 2017 23:16:02 GMT -5
doesn't matter what it is you throw it in cause your daughter brought it home.
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Rockpox
starting to shine!
Member since March 2010
Posts: 38
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Post by Rockpox on Feb 1, 2017 0:10:26 GMT -5
Looks like aventurine to me.
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Post by vegasjames on Feb 1, 2017 0:29:20 GMT -5
Looks like a green quartz so probably aventurine.
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vayank5150
starting to spend too much on rocks
Member since January 2017
Posts: 118
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Post by vayank5150 on Feb 1, 2017 7:19:44 GMT -5
What's the hardness? Guessing flourite. If it is, it's difficult to get a good shine. I remember in a previous post, you mentioned running a nail across the stone to see if it scratches it to determine hardness. Being a NOOB at all of this I bet I can scratch just about any rock with a nail if I press hard enough, so is there a preferred method to it?
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Post by spiceman on Feb 1, 2017 19:44:16 GMT -5
Look up MOH hardness testing. It describes the process and equipment needed.
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osuguy0301
starting to spend too much on rocks
Member since December 2015
Posts: 203
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Post by osuguy0301 on Feb 2, 2017 6:22:31 GMT -5
What's the hardness? Guessing flourite. If it is, it's difficult to get a good shine. I remember in a previous post, you mentioned running a nail across the stone to see if it scratches it to determine hardness. Being a NOOB at all of this I bet I can scratch just about any rock with a nail if I press hard enough, so is there a preferred method to it? I use the nail test quite often and have even had my students do Mohs testing on rocks as part of a lab. You can press as hard as you want, if the rock is harder than the nail, the nail won't scratch it. If the rock is harder than the nail what you will see if you press too hard is the nail will leave a streak on the rock. The metal from the nail gets left behind on the rock. It will look like a metallic streak so its easy to tell that the nail left it behind as opposed to scratching the rock. Jake
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osuguy0301
starting to spend too much on rocks
Member since December 2015
Posts: 203
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Post by osuguy0301 on Feb 2, 2017 6:38:50 GMT -5
It looks like green aventurine to me. I am by no means a rock ID expert though. Do a google image search for green aventurine and see what you think. If it is aventurine it will tumble nicely and take a nice polish. I have had some before and got nice results.
Jake
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Post by pghram on Feb 4, 2017 19:27:03 GMT -5
My guess would be adventirine also but do the scratch test. If it's fluorite and you put it into the tumbler with the others, it will disappear.
Peace,
Rich
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Feb 4, 2017 20:40:44 GMT -5
What's the hardness? Guessing flourite. If it is, it's difficult to get a good shine. I remember in a previous post, you mentioned running a nail across the stone to see if it scratches it to determine hardness. Being a NOOB at all of this I bet I can scratch just about any rock with a nail if I press hard enough, so is there a preferred method to it? Noob!! You cannot scratch any rock with a nail. Only those softer than steel. Fluorite is softer. Quartzite is what I (and others) think you have will not. Try it! Softer material loses. You daughter is lucky.
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Post by spiceman on Feb 4, 2017 23:47:32 GMT -5
I know what to say...the pictures are blurry and that's why I guessed wrong.:) I just thought in the first pic the white places on the break surface looked like some of my pieces I have. But it is darker green than my pieces.
That is a fast way to back out of a problem. Maybe
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vayank5150
starting to spend too much on rocks
Member since January 2017
Posts: 118
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Post by vayank5150 on Feb 5, 2017 11:07:18 GMT -5
I know what to say...the pictures are blurry and that's why I guessed wrong. I just thought in the first pic the white places on the break surface looked like some of my pieces I have. But it is darker green than my pieces. That is a fast way to back out of a problem. Maybe Haha.....the bigger problem is that I am a very impatient person when it comes to this new hobby. Combine that with the patience of an 8 year old, and BOOM....it is already in the tumbler with other local rocks. Let's hope it doesn't disappear!!
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Feb 5, 2017 14:33:50 GMT -5
Tumbling teaches patience.
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Post by spiceman on Feb 5, 2017 16:46:42 GMT -5
Just keep a close eye on it. Maybe don't put it in till stage two, maybe. Try things. I've never put soft rocks in with hard rocks. HA You will learn, is it a big problem? No, the rock may Just disappear but you know why. So you learn. Oh well Not a problem. You will find out things happen that are not always good But if you learned something, then it is good. Just don't Don't do it again.
Although, Shotgunner has the best answer.
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Feb 6, 2017 0:12:01 GMT -5
The stone can still be scratch tested at your first cleanout
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vayank5150
starting to spend too much on rocks
Member since January 2017
Posts: 118
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Post by vayank5150 on Feb 11, 2017 19:31:21 GMT -5
OK, so my daughter picked this up on a hike today. I think it is probably some form of quartz, but would like your opinion on what it might be. Thanks in advance. 20170211_192032 by Michael Aldrich, on Flickr
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Feb 11, 2017 21:19:56 GMT -5
Looks like white quartz.........
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