CH 26 Flashcards
a naturally occurring inorganic solid with a crystalline form
mineral
the color of a material in powdered form is called
streak
minerals that break with irregular surfaces exhibit
fracture
when a mineral breaks along preferred planes of weakness creating sets of smooth parallel sides it has
cleavage
the physical property that measures a minerals resistance to scratching is called
hardness
molten rock material inside earth is called
magma
define rock
naturally formed mixture containing minerals rock fragments and volcanic glass
how are rocks identified
by their composition and texture
what does the texture of a rock describe about a rock
size shape and arrangement
where do intrusive igneous rocks form
within the crust
what type of molten rock does intrusive igneous rocks form from
magma
what is the name of the series that illustrates simultaneous crystallization of silicate minerals.
Bowen’s reaction series
what are the 3 types of magma
mafic intermediate felsic
which magma type has a low silica content
mafic
which magma type has a high silica content
felsic
which type of crust has an abundant amount of quartz(oceanic or continental)
continental
which type of crust has little to no quartz
decontinental or oceanic
which type of igneous rock has a coarse grained texture
intrusive igneous rocks
which type of igneous rock has a fine grained texture
extrusive igneous rock
do fine grained rocks cool slowly or quickly
quickly
what are the 2 specific texture types for extrusive igneous rock (this answer was our weekly question for Tuesday)
vesicular and porphyritic
which texture is the type with 2 different crystal sizes because of different cooling rates
porphyritic
which texture is the type with holes left behind because of rapid cooling
vesicular
what type of rock has a vesicular (holey) texture
pumice
