Minerals are the building blocks of rocks. They are non-living, solid, and, like all matter, are made of atoms of elements. There are many different types of minerals and each type is made of particular groups of atoms. Different types of minerals have different crystal shapes.
No, "felsite" is not a mineral. Perhaps you mean feldspar?
An inorganic mineral does not contain any Carbon
Not exactly sure what you mean...do you mean "true or false: a given mineral can have varying densities?" If you do mean that, than the answer is true.
When a mineral can scratch another mineral, it means that the mineral is harder than the mineral it can scratch. Hardness is a measure of a mineral's resistance to being scratched, with the Mohs scale commonly used to rank minerals based on their hardness.
south america
A specific gravity of 4.0 for a mineral means that a given volume of the mineral has 4.0 times the mass of the same volume of water.
SiO4 is not a mineral. Do you perhaps mean SiO2, the common silicate called quartz?
A chemical formula.
An organic mineral is of biogenic origin; for example petroleum can be considered an organic liquid mineral. For other organic minerals see the link below.
bone mineral density
ámbar (the mineral). ambar(the color)
Essentially it means how shiny the mineral is