Final (THIS CLASS SUCKS) Flashcards
(30 cards)
Mineral
a naturally occurring, inorganic crystalline (solid) substance consisting of one or more chemical elements in specific proportions with a distinctive set of physical properties
what are the most abundant elements in the earth’s crust
Oxygen (47%)
Silicon (27%)
Al, Fe, Ca, Na, K, Mg (<10%)
non-silicate minerals
carbonates, oxides, and sulfides are most common
gold, silver, gemstones are also
Calcite
very common carbonate mineral component of rock limestone
How does Limestone contribute to cave formation
it will dissolve over time in slightly acidic ground waters
what two elements account for 74% of the earth’s crust
O
Si
Feldspar group
a group of structurally related minerals, that as a set are the most abundant silicate minerals in the earth’s crust
similarities and differences between graphite and diamond
both made of pure C
diamond is hard, clear and crystalline
graphite is soft and black
Fracture
irregular or random breakage of a mineral
cleavage
tendency to break along definite smooth planes
color
the property of reflecting particular light wavelength
luster
how a mineral’s surface reflects light
specific gravity
ratio of a mineral’s wieght to the weight of an equal volume of pure water
what is the average specific gravity of a mineral
3-4
hardness
a mineral’s resistance to scratching or abrasion
what is the hardness of diamond on the mohs hardness scale
10
what does vitreous luster mean
looks glassy
what does limestone consist of
deposits of calcium carbonate (calcite)
stalagmites
dripstone that forms cavern floors
rock cycle
the interrelationship among the processes that produce the three classes of rock
igneous rocks
rocks that are formed from the cooling of molten material
what class of rock is most likely to contain fossils
sedimentary
destruction of Mt. Saint Helens
most destructive volcanic eruption in US history
57 people died
thousands of animals killed
more than 200 homes destroyed
185 miles of roads destroyed
How MT. Saint Helens supports creation viewpoint
supports how the flood formed the geological features on earth
saw that geological layers form in hours
canyons were carved quickly
showed how coal can be formed