minerals
a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition
what is a mineral?
specific geometric shapes, i.e. euhedral, subhedral, and anhedral
what is crystals grow unobstructed into?
the tendency of a mineral to break along planes, creating smooth surfaces.
what is cleavage?
color is _______ but not always _________, as minerals can exist in __________.
what is
useful
reliable
varieties
there are two different types of streaks, ___________ and ______________
what is metallic and non-metallic?
naturally occurring, occurs in nature, inorganic, solid at room temp, ordered internal structure, definite chemical composition
what is a qualifications for a mineral?
well-formed crystal faces
what is euhedral?
the tendency of a mineral to resist breaking along planes; instead creating rough surfaces.
what is fracture?
a measure of how easily a mineral can be scratched
what is hardness?
metallic minerals give ______ streaks
what is colored?
what is a rock?
partly well-formed crystal faces
what is subhedral?
cleavage it ________, because the bonds are strong and weak; you are able to predict where the bonds will break
what is predictable?
what can hardness be measured on?
what is Mohs scale of hardness?
non-metallic minerals give _______ streaks
what is white?
1. crystal shape
2. cleavage vs. fracture
3. color
4. hardness
5. density or specific gravity
what is how to distinguish a mineral?
no crystal faces
what is anhedral?
fracture is _______, because the bonds are of similar strength, you are not able to predict where the bonds will break
what is random?
what is an acronym for mohs scale of hardness?
what is Trans - Talc, Garp - Gypsum, Carries -Calcite, Firey - Flourite, Ace - Apatite, Over - Orthoclase, Queztalcoatlus' - Quartz, To - Topaz, Crocodiles - Corundum, Domain - Diamond?
since many non-metallics show a ______ streak, that cannot help you ___________ them!
what is white and distinguish?
where do minerals tend to grow?
what is underwater or in caves?
crystal shape gives us clues as to what a minerals ___________ may be
what is identity?
how do you test for cleavage/fracture?
what is to hit it until the mineral breaks?
some minerals have a distinct ______ streak that can be used to identify them.
what is color?
the way light bounces off a surface
what is luster?