Rock
mixture of one or more materials
mineral
inorganic crystalline structure that is naturally occurring
naturally occurring
what does it mean to not be manmade
inorganic
not a biological process
crystal structure
organization of atoms with an internal repeating structure
92
How many natural elements are there?
Crystal form
the shape that the crystal will grow into if unobstructed
luster
how light reflects off the surface
metallic
looks like metal
non-metallic
does not look like metal
color
impurities and change in order, but not good for identification
streak
color of mineral powder, good for identification
hardness
this is a measurement of the resistance to scratching
cleavage
property of a mineral to break along planes of weakness
fracture
irregular break
90 degrees
minerals have a cleavage of approximately how many degrees
external properties
internal composition and structure have a big impact on what?
crystal form
internal structure repeated as crystal grows
space
What do minerals need to grow and for crystals to form?
Talc, Gypsum, Calcite, Fluorite, Apatite, Orthoclase, Quartz, Topez, Corundum, Diamond
Hardness scale. Thank God College Freaks Accept Only Quitters That Cry Daily
Oxygen, Silicon, Aluminum, Iron, Calcium, Sodium, Potassium, Magnesium
Earth's crust is made up of 8 elements. Only Silly Asses In College Study Past Midnight
oxygen tetrahedron
silicon
single tetrahedron
pyroxene (augite)
double chain
amphibole and hornblende are of this structure