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Minerals
Question | Answer |
---|---|
A naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition | mineral |
The "I" in SNIFC | inorganic |
The "C" in SNIFC | crystal |
The _____ of a mineral is the color of its powder. | streak |
The term _____ is used to describe how light is reflected from a mineral's surface. | luster |
This scale ranks 10 minerals from softest to hardest. This can be determined by a scratch test. | Mohs Hardness Scale |
A mineral that splits easily along flat surfaces has this property. | cleavage |
This describes how a mineral looks when it breaks apart in an irregular way (does not split apart evenly). | fracture |
The "S" in SNIFC | solid |
The "N" in SNIFC | natural |
meaning of inorganic | not living and never has been |
meaning of crystal form | specific repeating pattern |
meaning of solid | not a liquid or a gas |
meaning of natural | made by nature; not man-made |
The "F" in SNIFC | fixed composition |
meaning of fixed composition | same recipe, everywhere and every time |
Why is color not a reliable way to determine what type of mineral you are looking at? | Many minerals could be the same color. Some minerals are more than one color. |
two types of breakage | cleavage and fracture |
how the mineral feels | texture |
first thing you see; not very reliable | color |
two main types of luster | metallic and non-metallic |
how easy a mineral is to scratch | hardness |