What are rocks and minerals, anyway?
Minerals
are naturally occurring inorganic compounds ("non-living material").
Rocks
are extensive mineral bodies composed of one or more minerals in different
amounts, which form part of the earth's crust.
How
do we use Harford County rocks and minerals?
How
can we classify rocks and minerals?
How
did rocks get their names and what are they used for?
What
does that word mean? (a glossary)
Last updated August 5, 1999