In general, mineral particles are small, having formed within confined areas such as lava flows or between grains of sediments. Large crystals found in geodes and other rocks are relatively rare.

Experience the connection between rocks and life in our new Evolution Garden where rocks ... the story of the working lives and hardships of miners in the 1800s. A flawless blue topaz gemstone - the ...

These minerals are often particularly sensitive when exposed to ultraviolet (UV), blue light or inappropriate relative humidity. 'Many people think that because rocks are usually hard and have lasted ...

Sometimes scientists must dig and work and sweat to make scientific discoveries. And sometimes a robot rolls over a rock that ...

Mars expert Roger Wiens and his team, including the rover Perseverance, discovered fascinating rocks incorporating kaolinite ...

The blue rocks, distinct in mineral composition, suggest geological processes or historical water activity, raising questions about Mars' history and the potential for life. The discovery of blue ...