No, Galena is a Sulfide
For historical reasons, the American Petroleum Institute are the ones who established the rating system for radioactivity in minerals: GRapi units (Gamma Ray American Petroleum Institute units). The...
Galena is an ore of lead and is therefore primarily made of lead as well as sulfur
Galena belongs to the sulfide minerals.
Galena is lead sulphide...an ore of lead; also contains varying amounts of silver.