It sometimes exists as the matrix of the sulphuret of lead—more frequently, as one of its accompanying minerals.
The best remedy is probably a solution of sulphuret of potassium.
But it also takes up sulphur, which remains in it in the form of sulphuret of calcium.
The one is galena, a sulphuret of lead; the other, pyrites, a sulphuret of iron.
Some zinc, in the state of a sulphuret, is found accompanying it.
Masses of sulphuret of zinc, in the form of blende, were noticed at this locality.
These sandstones, bituminous schists, and indurated clays, contain mercury both in the state of sulphuret and in the native form.
Thus the sulphuret of potassium was called liver of sulphur.
The surface of the sulphuret being again removed by a file or knife, it was considered quite free from uncombined silver.
This is considered to be a mixture of sulphuret and oxide of mercury.