Minerals

Mineral elements provide the color in fireworks.
You can view a national map of hardness in surfa
Minerals must be mined from the ground, either by surf
At today's level of consumption, the average newborn i
To maintain our standard of living, each person in the United States requires over 48,000 pounds of minerals each year:12,528 lb. of stone9,385 lb. of sand and gravel888 lb. of cement280 lb. of clays
Of the 1.52 billion metric tons of copper discovered t
Of the 193,000 metric tons of gold discovered to date,
Of the 1,740,000 metric tons of silver discovered to d
Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous,