The texture of groups or masses of minerals is said to be massive when the mineral is poorly crystallized and dense, and without apparent internal structure. Massive minerals are compact and individual grains are microscopic. Flint is an example of a massive mineral.
As the Ohio History Connection continues to allocate and prioritize its resources, we no longer have the capacity to update and moderate content on Ohio History Central. These pages will be taken down effective Dec. 31, 2023.