To use all functions of this page, please activate cookies in your browser.
My watch list
my.chemeurope.com
my.chemeurope.com
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
PitchstonePitchstone is a dull black glassy volcanic rock formed when lava cools swiftly. It is similar to but coarser than obsidian. Additional recommended knowledgeThe ridge of An Sgurr on the Isle of Eigg was originally formed as a lava flow in a valley. Pitchstone is very resistant to erosion. |
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pitchstone". A list of authors is available in Wikipedia. |
