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Post by shivan on Sept 20, 2011 19:03:13 GMT 10
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Post by Deleted on Sept 20, 2011 19:17:21 GMT 10
Scratch test normally works to identify stuff, quartz has a hardness scale of 7 most glass is between 5-6.... so quartz is harder and therefore should scratch glass. Its difficult when they are that close, you may need to use a magnifying glass to check the scratches.
Diggerdude
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Post by jeffu on Sept 20, 2011 19:22:16 GMT 10
Hi Ian.
I am assuming you found it at Oallen.
It is more than likely Zircon, would look very nice facetted.
Was it left behind in you sluice along with the black sand?
Zircon is fairly heavy, almost the same as ilmenite and not quite as heavy as magnetite.
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Post by shivan on Sept 20, 2011 21:37:12 GMT 10
Thanks for the info guys. Jeff it was found at Oallen, but funny enough it was found 2 steps from the pebble pile at the back of the highbanker, it was not wet so i was guessing we didnt dig it up but not 100% Will try the scratch test and see how i go, tho i better get a bit of scrap and stay away from the windows i guess  |
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Post by Andy on Sept 21, 2011 6:41:00 GMT 10
Mate, even if you do find that it is glass, put it through the tumbler anyway. Glass polishes up beautifully.
If you get your hands on an old TV with a CRT screen, break the screen Make sure you put an old blanket etc over the screen before hitting it with the hammer!!! & polish the bigger bits. They come out looking like a light medium grey gemstone.
There's even a name for it. SCREENPAZ. ;D
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Post by shivan on Sept 21, 2011 8:06:01 GMT 10
Thanks Andy never thaught about that , might be a good way to practice polishing I tryed the scratch test and it left a mark on the glass with nothing i could see thru a loupe on the rock. When i get round to polishing it ill post another pic ;D |
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Post by Deleted on Dec 26, 2011 11:53:18 GMT 10
This may be to late as I have Just goined It is NOT Glase more to the point I would say Topaz or Qiartz. I would havet cut/Faceted
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Post by nugget893 on Dec 26, 2011 12:06:43 GMT 10
It could even be a bit of Quartz Crystal that has been tumbling around the bottom of the creek for yonks and now has rounded of.
Nugget893
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Post by donnybrook on Dec 26, 2011 12:20:04 GMT 10
Even though it appears to be round and tumbled if you see distinct sides;some may be small than others you might be able to determine its system. For ezample garnet and diamond are octahedral. You can also do an SG with a small set of gun scales weight in air as opposed to weight in water. Diamonds and quartz have very close SG's. Also hardness if you get a sapphire and try the scratch test and it does not scratch it is diamond. It appears to have that adamantic lustre but it could also be just abrasion. Black diamonds have been found in the Braidwood area so god knows what you are likely to turn up with out here.
donnybrook
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Post by shivan on Dec 26, 2011 20:29:07 GMT 10
It is hard to make out in the photo but there seem to have been 6 flat sides at one stage up its length, all the sides are very round and look to have been water worn/tumbled that way.
I have also found a slightly larger version but it has alot more flaws but also has a darkish/black tint to one part of it.
If i remember Don ill bring them with me when i come for a visit.
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Post by jasonr on Jul 20, 2012 21:51:47 GMT 10
hi guys .. its a quartz "jellybean" and the other one most likely would have bean smokey quartz. Lots down Inverell QLD. We found lots of them last trip .. which reminds me i must do a report on that one as it was thoroughly enjoyable  |
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Post by shivan on Jul 20, 2012 21:56:43 GMT 10
G'day Jason, spot on lil quartz jellybean ;D here is what it looks like now  |
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Post by grandpa on Jul 21, 2012 8:12:48 GMT 10
Definitely not glass it would have shattered in the tumbler just my thought Grandpa  |
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Post by jasonr on Jul 21, 2012 12:10:03 GMT 10
oppps my bad in previous post .. Its Inverell NSW not Inverell QLD .... And if any of you head there in future go to the public fossicking area at Stanifer Creek ... (bout 15 minutes from Inverell) and there are litterally hundreds of really cool jellybeans and other crystals in the creek bed. |
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Post by hunting the yellow on Jul 22, 2012 2:11:23 GMT 10
yep thats clear quartz all right or rock crystal same thing  ;D if it was melted glass it would be smashed inside it from the galss cooling down after a fire |
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