by Metwally Hamza, Research Assistant in the field of geology with international published research papers. Academically interested in cosmic geology & planetary sciences. Geology fiend who likes to take photos of nature & geological features, Egypt
- Pyrolusite is an oxide mineral, that has a chemical composition of "Manganese dioxide", and the most remarkable and notable property is the glassy showing appearance, the can be named as "glassy lustre", with very dark black color.
- The picture has a normal scale, not zoomed-up or not zoomed-down.
Metwally Hamza (distributed via imaggeo.egu.eu)