It is known as panning, usually for gold nuggets, using a shallow metal pan.
In some cases it will cost more to mine and refine the mineral than that mineral is worth. This can occur if the concentration of the mineral is too low, or if it is buried too deep to be accessed cost-effectively. In this case, the mineral resource is techincally not an ore, as by definition, an ore is a mineral resource that can be extracted at a profit.
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.
Opal, (although it's not a true mineral).
its diamond's,
salt
Gold is a valuable mineral
yes jade is an less valuable mineral than gold
A mineral containing a useful substance is an ore. Example: Bauxite is an ore, from which is extracted the commercially valuable metal aluminum.
In some cases it will cost more to mine and refine the mineral than that mineral is worth. This can occur if the concentration of the mineral is too low, or if it is buried too deep to be accessed cost-effectively. In this case, the mineral resource is techincally not an ore, as by definition, an ore is a mineral resource that can be extracted at a profit.
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.
Opal, (although it's not a true mineral).
no
salt
its diamond's,
is the mineral dolomite valueble
Ores contain metals and minerals, sch as iron, tungsten, copper, coal. «Ore» just means a mass of rock containing a mineral or metal more valuable. Does this help?
Yes