Andesite
rock · common
Quick facts
- Formula
- —
- Hardness
- 5-6
- Luster
- Dull to vitreous
- Colors
- Gray, black, or greenish
Andesite is an extrusive igneous rock with a composition between basalt and rhyolite. It is commonly found in volcanic arcs.
Identify by its intermediate color and fine-grained texture.
Scan yours
Photograph your specimen on arockid.com or in RockSnap / RockID. Three free IDs a day — no card.
Try a live scanComing soon on theApp StoreDownload RockSnap on the App Store — coming soonComing soon onGoogle PlayGet it on Google Play — coming soon
On the App Store, search RockSnap. Links go live when Apple and Google approve the listing. Use the web app today — same account.