Pyrolusite

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41	PDF Document Add to Reading List Source URL: rruff.geo.arizona.edu Language: English Oxide minerals Jacobsite Galaxite Hausmannite Spinel Magnetite Pyrolusite Braunite Crystallography Chemistry Natural resources
42	PDF Document Add to Reading List Source URL: rruff.info Language: English - Date: 2009-11-16 21:56:51 Oxide minerals Manganese Psilomelane Pyrolusite Hausmannite Ankerite Rhodochrosite Wad Rhodonite Chemistry Matter Crystallography