Sign up for Lesson Plans, discounts & more!

Sparkling black smooth rock

by Zac price

If anyone knows what this is please let me know

Comments for Sparkling black smooth rock

Average Rating starstarstarstarstar

Click here to add your own comments

Nov 04, 2020
Obsidian maybe.
by: Douglas


This looks like obsidian. Where was it found? Obsidian is volcanic.

To identify this rock, or any rock, you need a few clues besides the color.
1. Where did the rock come from? If you know this you can look at a geology map to see what kinds of rocks are found there. Geology maps are easy to find- just google geology map + state.
Reading a geo map is a little more involved but only because they have so much information. This will help you get started:

2. Do some simple tests. You can find out about mineral tests here:

Scratch test for hardnes and streak test are 2 important ones.

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Have a rock or mineral specimen that you want to share?.

Share this page:
Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.

INTERESTED IN MORE? IF SO, YOU MAY WANT TO CHECK OUT OUR OTHER SITES: - Our online fossil and mineral rock shop. - An educational site about fossils.