MineralsWilaAndFris

Diamond Hardness; 10 Used in industrial uses. Ex; cutting

and grinding applications. Some diamonds don’t have a lot of

cleavage.

Talc Hardness; 1 Ground Talc is used as an ingredient

in ceramics, paper, paint, roofing, plastics, cosmetics, talcum and baby powders.

It can easily be cut and crushed.

Silicon or Silica Used in the aluminum industry to

improve castability and weldability. Second most common element in the

Earth’s crust. It is shiny, dark gray with a tint of

blue.

Helium Very small and extremely light

gaseous element. There are no helium-bearing

minerals. It is odorless and tasteless.

Nickel A silvery shiny, metallic element. Hardness; 4 Density; 8.908 g/cm

Gallium Color; Silvery-white It has one of the longest liquid ranges

of any metal and has a low vapor pressure even at high temperatures.

Ultra-pure gallium has a silvery appearance.

Graphite Hardness; 1 to 2 It is black and has a black streak. Useful in making led.

Cobalt It is a radioactive metal. It is metallic gray. Density; 8.90 g/cm

Mica Luster; Pearly and metallic Color; Dark brown, dark green, or

black. Hardness; 2.5-3

Arsenic The element is a steel grey, very

brittle, crystalline, semi-metallic (metalloid) solid.

Color; Metallic gray Hardness; 3-4