Rocks & Minerals in Everyday Things

Here is a list of everyday items, and some of the rocks and minerals that make them up!
Battery:  antimony, cadmium, lead, zinc
Bicycle:  aluminum, clay, diatomite, mica, sulfur, selenium, wollastonite, zinc
Book:  clay, limestone, sodium sulfate, feldspar
Brick:  bauxite, chromite, zircon, silica, graphite, kyanite, andalusite, sillimanite, clays
Car:  platinum, iron, aluminum, lead, coal, barite, boron, calcium carbonate, bentonite, silica, chromium, perlite, wollastonite, mica, industrial diamonds, zeolite, clays
Carpet:  limestone, selenium, lime, soda ash, zeolites, bentonite, titanium, sulfur, diatomite, petroleum
Caulking:  limestone, gypsum
Cement:  limestone, gypsum, iron, clays, diatomite, feldspar
Chalk:  limestone
Clothing:  boron, halite, molybdenum, sulfur

One of our favorite sayings is "If you can't grow it, you have to mine it!"  Do you have more to add to our list of rocks & minerals in everyday things?  E-mail your additions to rockshop@rocks4u.com .  Thank you.