The Story of Metamorphic Rocks
Metamorphic rocks when rocks are changed by heat and pressure.
|Foliated: Visible bands||Non-Foliated: No Bands|
|Gneiss: From Granite||Quartzite: From Sandstone|
to be more dense
than the rocks the came from.
|Gniess has thick light & dark bands||Quartzite contains quartz, hardness = 7|
|Schist: This Sample Has Mica||Marble: From Limestone|
Metamorphism covers large areas and is more intense.
Contact Metamorphism covers less area and is less drastic.
|Schist has thin wavy bands||Marble contains calcite = fizzes in acid|
|Slate: From Shale|
|Slate is very-fine with microscopic bands|
ROCK: a group minerals bound together
|Light Colored Quartz||Dark Colored Biotite Mica||Pink Colored Feldspar|
|All Three Are In Igneous Granite||All Three Are In Sedimentary Sandstone||All Three Are In Gneiss|
Return to Ask Why 2.0!