Class: Metamorphic

Subclass: Non foliated

Rock: Slate

General Characteristics: Fine-grained; smooth surfaces; typically forms from the low-grade metamorphism.

Subclass: Non foliated

Rock: Phyllite

General Characteristics: Fine-grained; glossy, way surfaces.

Sublcass: Non foliated

Rock: Schist

General Characteristics: Thin, flaky layers of platy minerals.

Subclass: Non foiliated

Rock: Gneiss

General Characteristics: Coarse-grained; granular texture; distinct mineral layers; high grade metamorphism

Subclass: Nonfoliated

Rock: Quartzite

General Characteristics: Composed primarily of quart; often derived from sandstone.

Subclass: Nonfoliated

Rock: Marble

General Characteristics: Composed principally of calcite; typically derived from limestone.

Subclass: Nonfoliated

Rock: Serpentinite

General Characteristics: Greenish-black color; slippery feel; from hydrothermal alteration of peridotite.

Home