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A diamond. Actually, a diamond can be scratched my other minerals.
Mixed mineral is a mineral having an interstratified structure. This consists of alternating layers of different clays and some other minerals.
As a mineral commodity in relation to other mineral commodities, not especially so. To a manufacturer that depends on graphite and has no substitute mineral, it would be very valuable.
The silicate minerals like quartz and feldspars are plentiful and extremely useful in ceramics, glass products, and electronics of all types. Calcite is another useful and abundant mineral which is used to make cement, of which most roadways, sidewalks, dams, and building foundations are constructed. Metallic minerals like magnetite and hematite provide much of the ore for iron production. And copper is found in most machines and electrical gizmos. In other words, it would be hard to single out one specific mineral, when the loss of one important one could alter our life as we know it.
Bauxite is not a mineral, but a rock (aluminum ore), and is a mixture of aluminum, iron and some other minerals.
Gemstones Metals Other useful minerals
Color and streak would be the least useful, because they may be shared by a multitude of other minerals.
a pancake
Color and streak would be the least useful, because they may be shared by a multitude of other minerals.
it's because there are too many other minerals which share the same property.
A mineral is basically a mixture of different substances that consist of rocks (solid form) and some other things. While it is in its other form (liquid) it contains some useful substances such as zinc and etc.
because it is not the color that matters but the jedbots that matters.
I think a pulley is useful because it can help you and other people to.
Studying time management techniques is useful for increasing productivity.
People who would find periscopes useful are those who would wish to spy on other people.:-)
charcoal is a mineral. it is not a living specimen because it cannot move breathe or any other types of actions such as these. but it is useful to barbeque with.
Why would they create programs if it won't even be useful for themselves...Ofcourse they should create programs that are useful to themselves and other people..that's why programming is invented for advantages....