Short Answer
Pumice.
Why do people often times mix up schist and slate?
Both are metamorphosed rocks but schist is actually made from slate that has been put under even more pressure.
Are all metamorphic rocks foliated?
No
Examples: marble, quartzite.
Which of the following is an example of basaltic intrusive rock?
Diorite, Gabro, or Granite?
Gabro
Which of the following is an example of an andesitic extrusive rock?
Diorite, Andesite, or Granite?
Andesite
What kind of rock can igneous rocks turn into?
Metamorphic rocks through heat and pressure.
Why do people often times mix up genius and granite?
What are the three categories of sedimentary rocks we talked about?
Clastic, organic and chemical
How can you identify granitic igneous rocks?
Rich in silicon and oxygen, tend to have lighter colors, and are less dense.
What is an example of a chemical sedimentary rock?
What kind of rocks can sedimentary rocks turn into?
Metamorphic rocks under heat and pressure or another kind of sedimentary rock .
Why are metamorphic rocks more compact and dense than the rocks they formed from?
Because the heat and pressure they went under made them more compact and dense.
How can you identify basaltic igneous rocks?
Have high iron and magnesium content, usually much blacker in color, more dense
What does it mean if a rock is an organic sedimentary rock?
Made from deposits of living things.
What is an example of a clastic sedimentary rock?
Conglomerate, breccia, sandstone, shale
What kind of rock can metamorphic rocks turn into?
What kind of rock was likely the first kind of rock on earth?
Igneous.
What are two additional things to consider when identifying igneous rocks other that if they are granitic, basaltic, or andesitic?
Whether they have pockets of gas in them and if they are porphyritic.
What is marble metamorphosed from?
Limestone
What is an example of an organic sedimentary rock?
Limestone, coquina.
Why do intrusive igneous rocks have larger crystals than extrusive igneous rocks?
Because intrusive cool slower than extrusive.
How can the chemical make up of minerals be changed?
By adding heat and pressure which rearranges their atoms and turns them into metamorphic rocks.
What is gneiss metamorphosed from?
Granite
What is quartzite metamorphosed from?
Sandstone.
What is anthracite coal metamorphosed from?
Living matter.