Chemical Forums

Please login or register.

Login with username, password and session length

Sponsored links

Pages: [1]   Go Down

Author Topic: Which chemical element ?  (Read 3246 times)

0 Members and 1 Guest are viewing this topic.


  • New Member
  • **
  • Mole Snacks: +0/-0
  • Offline Offline
  • Posts: 5
Which chemical element ?
« on: July 10, 2008, 12:05:14 AM »


I have a rock (breccia, weight 2 kos.+++).
Many clasts (cemented in a rusty brown matrix) are magnetic. Among them are some with red/orange colour. When scratched with a small sharp knife a shiny metal appears (doesn't look like copper). After some time again (hours?) the metal cannot be seen and the clasts will have regained the red/orange colour all over.

Can anyone tell what metal has those properties ?



  • Retired Staff
  • Full Member
  • *
  • Mole Snacks: +67/-7
  • Offline Offline
  • Gender: Female
  • Posts: 395
  • Quantum Kitten
Re: Which chemical element ?
« Reply #1 on: July 10, 2008, 04:15:19 AM »

It could possibly be iron.  Iron oxidizes to form a reddish compound (Fe2O3 or rust) when exposed to air. 

Pages: [1]   Go Up

Mitch Andre Garcia's Chemical Forums 2003-Present.

Page created in 0.068 seconds with 23 queries.