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what are colors in powder form?

streaks

what are used to describe how ;ight reflects is what?

luster

what is scratching glass?

hardness

what is classification based on?

composition of minerals

where do black smokers or vents come from?

earths crust and the bottom of the ocean

what as never contained carbon?

organic

minerals can be classified based on what?

compostition

what is color?

small amounts of different elements that give the same mineral different colors

what is streak?

the color of a mineral in it's powdered form

what is luster?

used to describe how light is reflected from the surface of a mineral

what is crystal form?

the vidible expression of a mineral's internal arrangement

what are halides?

mineral's that contain a halogen ion plus one or more elements

what are native elements?

minerals that exist in relively pure form

what is hardness?

A messure of the resistance of a mineral to being scratched

what is a mohs scale?

consists of 10 minerals arranged from 10 to 1

what is cleavage?

the tendancy of a mineral to break or cleave alone flat even surfaces

what is fracture?

uneven breakage of a mineral

what is density?

property of all matter that is the ratio of an objects mass to it's volume

what are silicates?

silicon oxygen tetrahedron, which provides the framework of every silicate mineral

what are carbonates?

minerals that contain the elements carbon, oxygen, and one more other metalic element

what are oxides?

minerals that contain oxygen and one or more other elements

what are sulfates and sulfides?

minerals that contain sulfur

what are halides?

minerals that contain a halogen ion plus one or more other elements

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