Table 3: The Organization of Metamorphic Rocks
|
Classification |
Original Rock |
Metamorphic Rock 1 ž
Metamorphic Rock 2… |
Foliated |
Shale |
Slate ž Phyllite ž Schist ž Gneiss |
|
|
Felsite |
Slate |
|
|
Granite |
Gneiss |
|
|
Gabbro, Basalt |
Schist ž Amphibolite |
|
|
Sandstone (without quartz) |
Schist ž High Grade Schist or Gneiss |
Nonfoliated |
Quartz Sandstone |
Quartzite |
|
|
Conglomerate
|
Quartzite Conglomerate or Conglomerate Marble (depending on composition) |
|
|
Limestone, Dolomite |
Marble |
|
|
Bituminous Coal |
Anthracite ž Graphitic Anthracite |
|
|
Peridotite |
Soapstone ž Serpentine |
Note: Schists are classified by their main mineral, which may be garnet, mica, chlorite, or something else.