Minerals interesting NOT!
mineral
Mineral
The hardest substance in a rock would be the hardest mineral of which the rock is composed.
An accessory mineral is a mineral present in small amounts in a rock, but not considered to be characteristic of the rock.
The hardest substance that is naturally occurring is a diamond. However, there are harder substances that have been made by scientists in labs.
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.
erosian wares away anything any rock mineral or substance
mineral
Asphalt concrete is neither a mineral nor a rock. It is a human-made material composed of aggregates (such as sand, gravel, or crushed stone) bonded together with bitumen, a sticky black substance derived from crude oil.
Mineral
Coal is not a mineral. A mineral is a solid non-organic substance. Coal is an organic substance.
Hydroxylapatite is the mineral substance in bone. It is a calcium compound.
The hardest substance in a rock would be the hardest mineral of which the rock is composed.