Why Do Magnets Stick To Granite

Having dinner this evening around the granite kitchen worktop bar.

Why do magnets stick to granite.

If you have a granite that appears tobe magnetic have it checked for magnetite or other magnetic minerals. The epoxy cannot penetrate into the granite and is dependent on a molecular bond between the granite and the epoxy. Especially if it is mined from india. This is the area around the magnet where the force of the magnet acts.

Iron oxide is a fair permanent magnet ferrite magnets so if there is iron oxide in the granite it will be weakly magnetic unless. Favorite answer probably magnetite an fe containing mineral. Granite can be slightly magnetic. Others with unpaired electrons such as iron can become magnetized when they re placed within a magnetic field and their atoms rotate and align.

Stronger magnets have stronger. The rock granite cannot be magnetic but it can contain one or more minerals that are magnetic and if present those minerals would make that particular sample slightly magnetic in the areas surrounding those particular minerals. Well what do you know it appears that granite is magnetic something i hadn t realised until now. Oxides of iron and titanium are responsible for this.

While i was getting some neodymium magnets ready to use i put them down on my granite surface. This allows the minerals which form plenty of time to grow and results in a coarse textured rock in which individual mineral grains are easily visible. If you bring rare earth magnet towards it the magnet attracts. Even if the surface was roughened before attempting to stick the granite the granite itself is extremely solid making it problematic to stick.

Granite is intrusive which means that the magma was trapped deep in the crust and probably took a very long time to cool down enough to crystallize into solid rock. A magnet is an object that attracts iron and a few other metals including cobalt nickel and steel an alloy of iron. Some materials such as lodestones create a persistent magnetic field. If all of the unpaired electrons spin in random directions the object s magnetic field is either very weak or missing.