Rocks With White Crystals Inside

Collect several rock samples with crystals before identifying them.

Rocks with white crystals inside.

Crystals with small flat surfaces are said to have facets all crystals have a faceted surface but not all crystals have multiple facets. Igneous rock may form crystalline structures as it cools giving it a granular appearance. It was once believed that rock crystals were ice too frozen to melt. Shells tree branches roots and other organic materials often decay away to leave a void for the formation of mineral materials.

Igneous rock is created by volcanic activity forming from magma and lava as they cool and harden. Sedimentary rocks such as limestone or shale are hardened sediment with sandy or clay like layers strata they are usually brown to gray in color and may have fossils and water or wind marks. Typically the inclusion of clay gives jasper a yellowish white to gray tone. Igneous rocks such as granite or lava are tough frozen melts with little texture or layering rocks like these contain mostly black white and or gray minerals.

Many excellent books and websites have been written to help identify crystals on or within rocks. If no crystals form the result will be natural glass. Geodes in sedimentary rocks are usually found in limestones dolomites and calcareous shale in these deposits a gas filled void can serve as the opening for geode formation.