Rock: Mineral information, data and localities.

A rock is a naturally-occurring solid aggregate of one or more minerals, mineraloids or, in some cases, organic material. Sediments are the unconsolidated

Calcite - Wikipedia

Rock Collections

Rock & Mineral Set - School & Homeschool Geology Series

Rock Definition, Characteristics, Formation, Cycle

Glad You Asked: Igneous, Sedimentary, & Metamorphic Rocks - Utah

Discovering new mining deposits with big data - Mining Technology

USGS Mineral Resources On-Line Spatial Data

Glad You Asked: How Do Geologists Identify Minerals? - Utah

Colorado Geology - Colorado Geological Survey

Stone cold killers - 11 of the world's most dangerous minerals

16 Energy and Mineral Resources – An Introduction to Geology