Sulfer and Igneous rock
Because it is :P
Hardness is valuable because it helps in mineral identification by determining resistance to scratching. Minerals with higher hardness values can scratch minerals with lower hardness values, aiding in their classification. Hardness also indicates the strength and durability of a mineral, making it useful for industrial and practical applications.
India produces 89 minerals. Some valuable minerals are: Asbestos, Bauxite, Coal, Copper, Chromate, Diamond, Gold, Granite, Gypsum, Iron, Manganese, lime stones...etc.
No you are more likely to find them in a place with rivers and mountains. Florida is actually very low in minerals, well at least in valuable ones.
The most valuable gemstones are the clear, crystalline form of the harder minerals such as diamond, corundum, tourmaline, topaz, and garnet. Other minerals with exceptional clarity or color, and even some rock types are known commercially to be valuable as gemstones, but hardness is a key to frequent wearability.
it can be made up of minerals that come together
The interesting facts about volcanoes are that they blow up and lava and coal come out of them and it is very dangerous if you get hit by lava or coal because it is really hot.
No, not all minerals contain useful metals. Minerals are naturally occurring inorganic substances with a variety of compositions, and only some of them will contain metals that are economically valuable for things like industrial purposes or jewelry making.
This is difficult to answer, since all minerals are important in their own way. Each country has its own minerals (some have several) and these form an important source of income for each country.
autotrophic, because they make their own food!!
They are extracted from the earth as ores. Some commercially valuable ore minerals are magnetite and hematite for iron production, Sphalerite for zinc production, and chalcopyrite (not to be confused with pyrite, it's pretty much useless) for copper. There are many other ore minerals out there, I've only listed a few.
Some volcanoes appear green because of the growth of mosses, ferns, and other vegetation on their slopes, which thrive in the nutrient-rich volcanic soil. The green color is due to the chlorophyll in the plants, which reflects green light. It can also be caused by minerals such as olivine, which is green in color.