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Notes on video lecture:
Rocks and Minerals
Choose from these words to fill the blanks below:
solid, naturally, opal, single, rock, halite, glass, hydrogen, citric, crystal, sheets, food
mineral
                   occurring
something like            or concrete would not be a mineral
solid crystalline substance
something like          is not a mineral, which is simply an amorphous form of silica or non-crystalline solid, lacks the long-range order characteristic of a               
usually inorganic
we can have some organic minerals e.g. a compound containing organic         -based acids, such as amino acids and              acid
has a specific chemical composition
must have a chemical formula that you can write down
            
commonly known as          salt, or table salt
the mineral form of sodium chloride (NaCl)
Muscovite mica
very thin             
a phyllosilicate (hydrated, with either water or hydroxyl groups attached) mineral of aluminum and potassium with formula KAl2(AlSi3O10)(F,OH)2, or (KF)2(Al2O3)3(SiO2)6(H2O)
rock
naturally occurring
solid aggregate of minerals
could be a              mineral, e.g. a chunk of halite is also considered a rock
is usually a mixture of minerals
also can contain non-mineral            matter
coal
combustible black or brownish-black sedimentary rock
composed primarily of carbon along with variable quantities of other elements, chiefly                 , sulfur, oxygen, and nitrogen
Measuring Geologic Time
Rocks and Minerals