water
Hardness and streak color are very important. The color of the mineral helps some, as well.
The most diagnostic physical property of a mineral is its hardness, which is measured on the Mohs scale. Hardness indicates how resistant a mineral is to scratching and can help distinguish between different minerals. For example, talc is the softest mineral on the scale (1), while diamond is the hardest (10). Other important properties include color, luster, and streak, but hardness is often the most reliable for identification.
For Health e.g. calcium and iron.
Olivine is the most common mineral in the Earth's mantle.
Iron, Fe2+
Carbonates are the second most important mineral group.
mineral oil
Pennsylvania's most important mineral is coal. Second is oil.
Gravel
Calcium is the most important mineral for healthy bones, especially for women.
It is gold.
Bauxite
Gold
The most common mineral deficiency in the elderly is calcium deficiency, which can lead to osteoporosis and increased risk of fractures. It is important for elderly individuals to consume an adequate amount of calcium through diet or supplements to support bone health.
water
oil
Calcium is usually associated with bone health. It is found mostly in dairy products.