Psilomelane
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- New Mexico Bureau of Geology and Mineral Resources Rockhound Guide
- Formation of Nano-Crystalline Todorokite from Biogenic Mn Oxides
- Manganese Oxide Minerals: Crystal Structures and Economic and Environmental Significance
- Mineragraphic Identification of Psilo- Melane and Manganite1
- And Psilomelane. Pyrolusite
- March 2017 Update
- GEOLOGY of the STATE of MAINE
- Sursassite from New Brunswick1
- A POORLY CRYSTALLTZED, LOW BARIUM' PSILOMELANE-TYPE NTINERAL A. A. Lbvrnson, the Dow Chemical Company, Freeport, Teras'
- Occurrence of Nonpegmatite Beryllium in the United States
- "Todorokite," a New Manganese Mineral from the Todoroki Mine, Hokkaido, Japan
- Geology and Ore Deposits of Las Guijas Tungsten District, Pima County, Arizona
- Sell-1658 , Tungsten, Includes October 1977 Survey , ,MILS
- Deposits of Manganese Ore in Southeastern California
- Raman and Luminescence Spectroscopy of Manganese Minerals: Preparing for Supercam, Mars 2020
- Virginia Mineral Locality Index D
- Phenacite ...0.66 Willemite
- PYROLUSITE the Charcoal Gray-Black Streak of Pyrolusite May Be 4+ Mn O2 Sufficient to Distinguish It from Manganite, Which Has a Brownish-Black Streak