Encyclopedia of Earth
Encyclopedia of Earth: Manganese
Information about the element, Manganese, atomic number 25. Covers physical properties, atomic properties, how abundant it is on the Earth, details about health-related regulations, and its importance to human health. Also discusses...
Other
The image.com: Minerals
This is a very large list of minerals complete with image and physical descriptions, chemical descriptions, and classification.
Corrosion Source
Corrosion Source: Manganese
This resource presents a good summary of the history, properties, sources, uses and handling concerns of manganese. Also contains some basic data.
Curated OER
The image.com: Minerals
This is a very large list of minerals complete with image and physical descriptions, chemical descriptions, and classification.