Graphic granite

Pegmatite dike cutting schist, Montana

intrusion, intrusive, metamorphic, Archean, precambrian

Garnet Peridotite hand sample

specimen, igneous, intrusive

Granite sill intruding gneiss, Colorado.

igneous, intrusive

Diabase sill in marble, California

igneous, intrusive

Pegmatite dike in granitic rock.

granite, igneous, intrusive, minerals

Composite dike

igneous, intrusive

Pegmatite intruding gneiss , California

Pegmatite intruding basement gneiss , California

sill, dike, igneous intrusion, intrusive