Roger Weller, geology instructor
firstname.lastname@example.org copyright 2010-R.Weller
tumble polished rhodonite
Rhodonite is manganese silicate. Its color is usually pink but it can range to dark
pink and even to brown. Rhodonite is distinguished from another pink manganese
mineral, rhodochrosite, by its greater hardness (5.5 to 6) and by the presence of
black streaks of manganese oxide.
Photo is copyright free only for non-commercial educational uses.
Just credit photo to R.Weller/Cochise College.