Fill in the Blank 1
The largest group of minerals in the earth's crust are _________ .
silicates
Aluminum is more valuable than gold and silver
False - platinum
Chemical sediments that result from the evaporation of water are __________ .
type of rock formed when magma solidifies
igneous rock
branch of geology that deals with the identification and classification of minerals
mineralogy
The layer of solid rock below the soil is called ________ .
bedrock
Beryl that has a deep green color is amethyst.
False emerald
The most common chemical sedimentary rock is _______ .
limestone
type of rock formed when deposits of sand and mineral are cemented together
sedimentary rock
the number that compares an objects density to the density of water
specific gravity
The rarest, most durable and beautiful minerals are called __________ .
precious stones
A metal mixture of iron and carbon is copper.
False steel
humus
type of rock formed when preexisting rocks are altered by heat or pressure
metamorphic rock
most abundant metal in the earth's crust
aluminum
Substances found naturally in the earth and have a crystalline structure are ________.
minerals
Brass is an alloy of copper and zinc.
True
Rocks with a smooth, glasslike texture are _______ .
amorphous
any mineral that contains a valuable metallic element
ore
the study of soil
pedology
A theory that has never been proven false is a _____ .
law
crystals are generally characterized by flat surfaces called planes.
False faces
The San Andreas Fault is located in the __________ earthquake zone.
circum-pacific belt
the most basic unit of matter
atom
a mineral that continues to glow in the dark after being exposed to light
phosphorescence