Igneous Rocks
How do igneous rocks form?
solidification
What are the two types of metamorphic rocks?
foliated and non-foliated
All inorganic sedimentary rocks are what texture?
clastic (fragmental)
What mineral is most often green?
Olivine
obsidian
What are the two types of metamorphism?
Regional and contact
There are two different ways sedimentary rocks come about. What are they?
inorganically land-derived and chemically/organic
Cleavage and fracture.
What are the two types of igneous rocks?
intrusive and extrusive
Who is the parent rock of schist?
phyllite
What is the difference between rock salt and rock gypsum?
rock salt is composed of halite and rock gypsum is composed of gypsum
What is the definition of luster?
A fresh surface of mineral in reflected light.
What are the types of texture that a igneous rock can be?
glassy, fine, course, very course (vesicular and non-vesicular)
Phyllite, schist and what are composed of garnet,amphibole, feldspar and mica?
gniess
What rock is composed of shell fragments?
What is the name of the hardness scale and what is it rated out of?
Mohs' hardness scale and 1-10
When a rock is mafic, what is it rich in?
iron and magnesium
marble
Out of silt, clay and sand, what one has the largest grain size?
sand
An iron sulfide pyrite looks this color in rocks but creates a black streak when rubbed across a surface.
gold (or yellow)