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rocks and minerals=science notes

the notes for science

Terms

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luster
the way a surface reflects light. Shiny, dull, metallic, submetallic, nonmetallic - examples
rock
made up of one or more minerals
foliated
a rock with minerals that are aligned and look almost like pages in a book
Cleavage
when a mineral breaks along flat surfaces.
crystal
a solid in which the atoms are arranged in a pattern that repeats again and again. Geometric shape.
strata
layers in the rock
fracture
how a mineral breaks unevenly along curved or irregular surfaces
element
pure substance consisting entirely of one type of atom (example- carbon)
hardness
the resistance to being scrateched (Mohs' hardness scale)
igneous rock
magma cools and solidifies
Stratification
the layering of rock, forming or depositing in layers
streak
the color of a mineral in its powdered form.
atom
smallest part of an element
sedimentary rock
weather, erosion, depoit sediments- COMPACTED and CEMENTED together
Intrusive
when magma cools beneath the Earth's surface, usually has a coarse grained texture
metamorphic rock
heat and pressure cooks and sqeezed the rock into "metamorphic rock"
rock cycle
a process by which one rock type changes into another.
extrusive
igneous rock that forms on the earths surface, may have very small crystals
silicate mineral
silicon and oxygen (ex. feldspar, mica, quartz)
compound
a mineral with 2 or more elements ( halite has chlorine and sodium)
minerals
naturally formed, inorganic solid with a crystalline structure. (SCIN - solid, cystalline, inorganic, naturally)
nonfoliated
a rock with no aligned mineral grains
magma
the hot liquid form when rock melts
nonsilicate mineral
do not contain silicon, made from carbon, oxygen, iron, and sulfur

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