Minerals Crossword

Major conductor of electricity
Used in glass making and in radio electronics
Mineral used in ceramics
This is used as an insulator
It's black, and cleaves into elastic sheets
World's standard trade
A gemstone formed from the element carbon
This is used in the making of pencils; another form of carbon
You can find this in fertilizer, plastic, and explosives
Chief ore of iron (iron & oxygen)
Secondary ore of iron
Chief ore of aluminum
Chief ore of lead (lead & sulfur)
This oxide is a secondary ore of iron
This sulfide is used in making sulfuric acid; also called "fool's" gold
Makes plaster
Used for making cement
Most abundant mineral in the crust
The gem peridot; abundant in Earth's mantle
Third hardest mineral
Discovery of the state gem of California
Best known as red gemstone
Is a pegmatite mineral
This is used in the making of porcelain
Metamorphic rock used in construction, architecture, and lapidary work