Mineral Requirements
Minerals are not made of living things, or _____ material.
organic
streak
This type of igneous rock occurs when lava cools on Earth's surface.
extrusive
Sedimentary rocks can sometimes contain mineralized remains of living things, called _____.
fossils
True or False? Sedimentary and igneous rocks can become metamorphic rocks through the rock cycle.
True
A mineral must have one of _____ crystalline structures.
seven
A mineral's _____ can be glassy, dull or metallic.
luster
Intrusive rocks are types of igneous rocks that form when _____ cools beneath Earth's surface.
magma
Sandstone is a _____ type of sedimentary rock where sand has been cemented together.
clastic
True or False? Rocks can be melted deep inside the Earth where their minerals can be rearranged to make new rocks.
True
Minerals are natural, not _____.
synthetic or man-made
When a mineral breaks, it either fractures or has _____.
cleavage
This igneous rock looks like black glass because lava cools so quickly when it hits the air.
obsidian
_____ is a biochemical sedimentary rock that formed from ancient ferns.
coal
Marble is a metamorphic rock that is called _____ because it has no visible layers.
non-foliated
Minerals are _____, not liquids or gases.
solids
Lava or magma cools; solution cools
Granite is a _____ grained igneous rock that cooled slowly inside the earth.
coarse
Rock salt is a _____ sedimentary rock because it crystallized from a solution.
chemical or non-clastic
Gneiss is metamorphic rock that is _____ because it has visible bands.
foliated
chemical formula, compound or structure
What minerals have a 1 and 10 on the Moh's Hardness Scale?
Talc and Diamond
A _____ is made when minerals crystallize inside the cavity of a sedimentary or igneous rock.
geode
What happens to make minerals travel to a new location to be cemented into sedimentary rocks?
weathering, erosion
What happens to a rock to make it metamorphic?
Rock is subjected to tremendous heat and pressure deep inside the earth