Minerals interesting NOT!
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
A mineral is, by definition, a solid substance.
mineral
Mineral
A jade is actually both a mineral and a rock.
no
mineral
A mineral is any chemical compound with a constant chemical composition, which of course is the definition of a "pure substance". In earth science you might be distinguishing between "rock" and "mineral". A mineral is a pure substance. A rock is a mixture of two or more minerals in various proportions. For instance, the rock granite is made up of three minerals: quartz, feldspar and biotite (mica).
Silver isn't a rock. It's it's own substance. Silver is a mineral.
A rock is composed of multiple minerals, while minerals are made up of one substance, like copper.
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
No a diamond is a mineral. It is made out of one substance. Diamond :P
erosian wares away anything any rock mineral or substance
A rockA rock?
A mineral is, by definition, a solid substance.
mineral
Mineral