A '''columnar''' [[Mineral Aggregates|mineral aggregate]] is made up of slender, [[parallel]] [[column]]s. [[Beryl]] is an example of a [[mineral]] exhibiting a columnar form. | A '''columnar''' [[Mineral Aggregates|mineral aggregate]] is made up of slender, [[parallel]] [[column]]s. [[Beryl]] is an example of a [[mineral]] exhibiting a columnar form. |