Yes
salt
No, sugar crystals are not considered minerals. Minerals are naturally occurring inorganic substances with a defined chemical composition and crystalline structure, while sugar crystals are organic compounds made up of carbon, hydrogen, and oxygen atoms.
Yes, a crystal can be a mineral. Crystal, or crystaline refers to the arrangement of particular atoms or molecules of a mineral or element which generates a crystal lattice. Hence, crystal is a term which describes the effect of the arrangement of molecules of a mineral, element, etc.
mineral
Yes, the crystal system a mineral belongs to is a property of a mineral.
Sugar is not a mineral
A mineral crystal is not necessarily a diamond, but a diamond is a mineral crystal. All minerals, such as diamond, have crystalline structures.
mineral
A crystal mineral is a solid composed of material extending in all spatial dimensions.
Yeah, you can melt anything if you get it hot enough. Be sure not to confuse the terms crystal and mineral. A crystal is made of a mineral, the fact that it is a crystal, simply means that it's atoms are arranged in a periodical and static way, in the crystal structure. This structure falls apart as soon as the mineral melts, so a molten mineral can not be called a crystal.
Powdered sugar crystal
Sugar crystals are a solid form of sucrose.