The most blue crystals I know of are, Copper sulphate crystals, topaz, and sapphire
sapphires.... and there a couple of more...
opal
diamond
Kyanite
Andalusite
Azurite
Glaucophane
Copper
Hematite
No. A mineral must be solid to be a mineral. For example, liquid water is not a mineral. Frozen water, or ice, is a mineral.
petrified wood
Rust
Azurite is a deep blue mineral. It is often associated with copper deposits.
Blue John is a mineral
Blue John is a mineral
It depends on what you mean by mineral. A mineral is a 'wide range' term. The only one I know of is Alexandrite, but that is a color-changing mineral, not exactly blue all of the time.
anonymously
Calcite is an example of a carbonate mineral.
Sharp sand is an example of a silicate mineral.
blue
No. A mineral must be solid to be a mineral. For example, liquid water is not a mineral. Frozen water, or ice, is a mineral.
Mineral.
salt
ambot