Roger Weller, geology instructor
firstname.lastname@example.org copyright 2018-R.Weller
massive galena with sugary texture-1
Galena with this sugary type of texture is often rich in silver.
This type of galena is also known as "steel galena".
Photo is copyright free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.
Specimen from the Cochise College collection