megascopically

Cross-cutting relationships may be seen cartographically, megascopically, and microscopically.

Synonymous with coarse grained or megascopically crystalline.

When megascopically developed, the texture may consist of distinct pink and white lamellae representing exsolved white albite (NaAlSiO) in pink microcline K-feldspar.

Iddingsite forms from the weathering of basalt in the presence of liquid water and can be described as a phenocryst, i.e. it has megascopically visible crystals in a fine-grained groundmass of a porphyritic rock.