Why Do Magnets Stick To Granite

Well what do you know it appears that granite is magnetic something i hadn t realised until now.

Why do magnets stick to granite.

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. This is the area around the magnet where the force of the magnet acts. If you have a granite that appears tobe magnetic have it checked for magnetite or other magnetic minerals. If you bring rare earth magnet towards it the magnet attracts.

Stronger magnets have stronger. If all of the unpaired electrons spin in random directions the object s magnetic field is either very weak or missing. Especially if it is mined from india. Granite can be slightly magnetic.

This process is very weak on granite and even the bond is doomed to fail as it cures extremely hard with no flexibility. Even if the surface was roughened before attempting to stick the granite the granite itself is extremely solid making it problematic to stick. Favorite answer probably magnetite an fe containing mineral. Some materials such as lodestones create a persistent magnetic field.

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. Iron oxide is a fair permanent magnet ferrite magnets so if there is iron oxide in the granite it will be weakly magnetic unless. The epoxy cannot penetrate into the granite and is dependent on a molecular bond between the granite and the epoxy.

We have some useless fridge magnets shaped like giant clothespegs to clip notes reminders shopping lists to useless since they get knocked off the fridge fall to the floor and the magnet pops out of the casing. Oxides of iron and titanium are responsible for this. 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. Others with unpaired electrons such as iron can become magnetized when they re placed within a magnetic field and their atoms rotate and align.