What’s this Rock: Reference Sheet
IGNEOUS:
Cools very fast = glassy with holes
Cools fast = classy
Cools slow = small crystals
Cools very slow = large crystals
SEDIMENTARY:
Layers
Loosely compacted
Distinct particles
Dull
Light colored and light weight
METAMORPHIC:
Thick layers
Blended colors
Tightly compacted
Blurred particles
Shiny
What’s this Rock: Reference Sheet
IGNEOUS:
Cools very fast = glassy with holes
Cools fast = classy
Cools slow = small crystals
Cools very slow = large crystals
SEDIMENTARY:
Layers
Loosely compacted
Distinct particles
Dull
Light colored and light weight
METAMORPHIC:
Thick layers
Blended colors
Tightly compacted
Blurred particles
Shiny