Is this a rock? - UPDATED PICTURES

gargreen18

Jr. Member
Apr 21, 2010
95
0
Somewhere Near Spokane
Detector(s) used
Bounty Hunter Elite 2200

Attachments

  • rock1.jpg
    rock1.jpg
    24.3 KB · Views: 704
  • rock2.jpg
    rock2.jpg
    22.4 KB · Views: 698
  • rock3.jpg
    rock3.jpg
    23.9 KB · Views: 705
  • rock4.jpg
    rock4.jpg
    21.6 KB · Views: 701
Re: Is this a rock?

shepcal said:
Too late to take pic of my 'rock', got from an ol timer. Was told it was volcanic glass (which is obsidium, isn't it?). It's clear with red, blue and green stripes thru it. Outside surface is like obsidium, smooth,sharp edges and 'spooned areas'. Posted this and will do a notify me. Will try to take a couple of pics and post tomorrow.
Shep

I have seen translucent obsidian,thats not completely clear like the specimen posted.
 

Upvote 0
Re: Is this a rock?

i had green black, red, mahogany, and clear but sold on eBay a few years back with a green and blue brown speckled double fluted Clovis so i could afford my first dfx.
now i so sad :'( :sad1: sold a bunch of good ones. but still don't know if he's got glass or what.
is that a layer of blue in your items? does it appear to be folded? are there air bubbles? probably wouldn't be any bubbles in obsidian
kuger is right, it's hard to come by
 

Upvote 0
Re: Is this a rock?

Still kinda looks like quartz to me though. Quartz would not be melted and this doesn't look melted, but have seen melted glass, mixed with other things look like this when dirty but only the top two pics, the two lower pics still "in my opinion" look like quartz.


http://www.beg.utexas.edu/mainweb/publications/graphics/quartz400.jpg

http://www.neab.net/oldgeo/pictures/rock025.jpg

http://rockglow.files.wordpress.com/2009/10/c2350n.jpg

EDIT: Apologies, didn't see this as solved, replied through my post finds :BangHead:
 

Upvote 0
Re: Is this a rock?

Below are a couple of pics. 1 in natural light and 1 w/ a flashlight behind it. As I was told it was volcanic glass, which I thought was obsidium. If you say it's something different- go for it!
Shep
 

Attachments

  • IMG_0382 (600 x 450).jpg
    IMG_0382 (600 x 450).jpg
    30.6 KB · Views: 498
  • IMG_0384 (600 x 450).jpg
    IMG_0384 (600 x 450).jpg
    36 KB · Views: 495
Upvote 0
Re: Is this a rock?

shepcal said:
Below are a couple of pics. 1 in natural light and 1 w/ a flashlight behind it. As I was told it was volcanic glass, which I thought was obsidium. If you say it's something different- go for it!
Shep
thats about the coolest rock iv'e ever seen. high dollar
 

Upvote 0
Re: Is this a rock?

Well,I have already been surprised by the clear obsidian posted but............Shep's example is not natural,it is glass.I seen some of the exact stuff in a rock shop in Oregon,he had the most beutiful reds,greens,blues and orange,and the rainbow.He made it all,and yes it was high dollar,he said he was the only one making it.I did buy a piece of Red White and Blue,and made a dandy knife which I sold
 

Upvote 0
Re: Is this a rock?

The top two pics of the other rock look like something else "melted glass included" , have no idea just to be clear and I mean the bottom two pics just so there is no confusion and here is a comparison.
The bottom layer of the rock looks like the rose color quartz on the left as well as formation but this is my opinion only :dontknow:
 

Attachments

  • quartzcompare.jpg
    quartzcompare.jpg
    13.5 KB · Views: 488
Upvote 0
More pics

Details on my rocks:

No folds, or bubbles on either rock. One of them is white on the outside and I cannot wipe or clean the white off. The white one also is almost a light lavender color when you hold it up to the sun. So, light in color the camera doesn't pick it up. It appears to have a cut in it. I thought maybe folded but it doesn't go all the way through.

Here are more pics of the white one.
 

Attachments

  • nr.jpg
    nr.jpg
    23.9 KB · Views: 482
  • nr2.jpg
    nr2.jpg
    31 KB · Views: 471
  • nr1.jpg
    nr1.jpg
    29.5 KB · Views: 474
  • nr3.jpg
    nr3.jpg
    28.7 KB · Views: 471
Upvote 0
Here is the other one. I don't see bubbles or folds. I do see that when tilted in the sun it has a rainbow gasoline color. As you should be able to see in these new pictures.
 

Attachments

  • nr4.jpg
    nr4.jpg
    30.6 KB · Views: 467
  • nr5.jpg
    nr5.jpg
    30.5 KB · Views: 463
Upvote 0
gargreen18 said:
Here is the other one. I don't see bubbles or folds. I do see that when tilted in the sun it has a rainbow gasoline color. As you should be able to see in these new pictures.
Dear gargreen;
You can use the Moh's comparative hardness test to determine what the degree of hardness the material in question is. This in turn will tell you what class of material the unknown material resides in.

You could first try scratching a small spot on the material with a shard of broken window pane, being careful not to cut yourself of course. A window pane typically has a Moh's hardness of 5.5 on the scale so if the glass does not scratch the surface of the material, you will know that it is harder than 5.5.

Next, you could try to scratch the surface of the material with a jeweler's file. If the material still will not scratch, then it has a hardness greater than 6.5 on the scale. Quartz has a Moh's hardness of 7.0 and it's very seldom that a fire can attain sufficient heat in nature to melt hardened glass, therefore you can assume that the material is not a piece of hardened glass at that point.

Once this has been accomplished, we can proceed to a specific gravity test.
Your friend;
LAMAR
 

Upvote 0
traderoftreasure said:
quartz... :icon_thumleft:

I am a part time hard rock gold miner and have seen millions a pounds of quartz,and have never seen quartz like that.....just sayin :dontknow:
 

Upvote 0
Arid-Zone-A-seeker said:
It is a "Gas pocket" Agate, basic chalcedony,and quartz. I have picked up tons of them.
Arid.

You know what?You are right.I will eat the crow!Those are all over Nevada,I didnt relize they had Quartz in them though!
I have an arrowhead(original)made out of Chalcedony :thumbsup:
 

Upvote 0
Newt said:
It could be a lightning strike too. Is there sand in the area?
Newt

There is sand in the area. My wife has a necklace made from the "glass" from a lightning strike hers in green. Do they differ in color?

**Note I broke a piece of the small white piece by hand

I was gonna do the scratch test but I don't have a gem knife or whatever it is called. I scratched it with my pocket knife and it wouldnt scratch. But I didn't follow the rules either, so that don't count. Maybe in a few days when it cools down I will go look for more.
 

Upvote 0
I forgot the actual term for it. Maybe someone can tell you what a lightning strike is called. I have one from digging in FL.
 

Upvote 0
Gas Pocket Agates can have quartz crystals inside like a geode. I have saw them with amethyst in them also. Tomarrow I will photo some that I have found,,, some cut and some as found.

We call this kind 'Ice' agate locally because it looks like you dumped out the freezer in the yard when you have a lot of them.
Arid.
 

Upvote 0
traderoftreasure said:
Newt said:
I forgot the actual term for it. Maybe someone can tell you what a lightning strike is called. I have one from digging in FL.
straw
Fulgurite.
I have done a search for fulgurites and found nothing that resembles these pieces.

Mike
 

Upvote 0

Top Member Reactions

Users who are viewing this thread

Back
Top