If the stone consisted purely of one mineral, then it would be a mineral and not a rock.
It has no official rock, stone, gem or mineral.
The is no official rock, stone, gem or mineral for Pennsylvania.
A stone is a small piece of rock, while a rock is a larger, natural mass of mineral material.
Rock salt
Rock salt
its a rock but it has certain characteristics of magical minerals
It has no official state rock, stone, gem or mineral.
A stone is a small piece of rock, while a rock is a larger, natural mass of mineral material.
There is no Official Rock, Mineral or Stone but it does have the Patuxent River Stone as the Official Maryland State Gem.
It has many official state symbols but no rock, no mineral, no gemstone and no stone.
Mineral
The state rock of Pennsylvania is the trilobite. Actually, the trilobite is the state FOSSIL of Pennsylvania. PA does not have a state rock or a state mineral yet, though suggestions have been made.