micaceous

Smoke-grey micaceous slaty-clay, much like certain beds of the old red sandstone, where it graduates into grey wacke.

Among the loose stones at the foot of the portage, I picked up a specimen of micaceous oxide of iron.

Thus, highly micaceous sandstones, as they are traced into a metamorphic region, are seen to pass gradually into mica-schist.

An important character is the perfect micaceous cleavage parallel to the basal plane, on which plane the lustre is pearly.

The pepitas occur in different forms, often adhering to micaceous specular iron.