Geological Specimens "Rocks in A Bag" Metamorphic Pk/6

The Metamorphic Rock Bag is an economy collection of 6 commonly known metamorphic rocks. Metamorphic rocks are formed by pressure and heat that may or may not be influenced by the introduction of chemically active solutions. Each generous specimen is 1 1/4" to 1 1/2" and is contained in a zip lock bag with a label.

PHYLLITE – REFLECTIVE SHEEN, USUALLY GREY BLACK OR GREENISH

GNEISS – BANDED APPEARANCE AND TEXTURE, USUALLY LIGHT IN COLOUR (CAN BE DARK), HAS RIBBONS OF DIFFERENT COLOURED MINERALS.

QUARTZITE – WHITE TO PALE GREY COLOUR, GRAINY SURFACE WITH SANDPAPER TEXURE

GREEN SCHIST – DARK OR LIGHT GREEN, EVEN TEXTURE ****some kits contain MARBLE instead of GREEN SCHIST

SLATE – DARK DULL LUSTRE, FINE GRAINED TEXTURE, SMOOTH

HORNFELS – (FINE) GRANULAR TEXUTRE, HARD, CONTAINS SMALL CRYSTALS

*samples may change from time to time