Other
The image.com: Minerals
This is a very large list of minerals complete with image and physical descriptions, chemical descriptions, and classification.
Other
Clemson University: Soil Acidity and Liming
Covers the composition and uses of liming materials in agriculture, as well as the lime codes of several states. Good definitions of terms: lime, calcitic limestone, calcite, dolomite, dolomitic limestone, aragonite, hi-cal lime, and more.
Curated OER
The image.com: Minerals
This is a very large list of minerals complete with image and physical descriptions, chemical descriptions, and classification.