Metamorphic Rock Set 15, 1 Each

The United Scientific® Metamorphic Rock Set 15 is a boxed collection of 15 metamorphic specimens, including slate, phyllite, mica and biotite schist, gneiss, four colors of marble and three of quartzite. Specimens average 2 x 3 x 1.5 cm, with a specimen key inside the box. Earth science teachers use it to teach foliated and non-foliated textures, metamorphic grade and how heat and pressure transform rock.