Mineral study guide Ch.3
Terms
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- The scale used to rate the hardness of a mineral
- Moh's Scale
- The acid test that uses hydochloric acid tests for this mineral
- carbonates
- Bauxite is the most important mineral source of this
- aluminum
- This is the mineral property that describes the way light reflects off the surface of the mineral
- luster
- Beaautiful,rare,and valuable minerals that are cut and polished for jewlery
- gems
- Atoms or ions that are arranged in an orderly repeating pattern
- crystals
- Naturally occuring minerals form from cooling magma or lava and form this
- solutions
- A method of removing metals from ore
- smelting
- A minerals mass per unit volume
- density
- The slower the formation of crystals results in crystals of this size
- larger
- The test used to determine the color of a mineral powder
- steak test
- Minerals that contain large enough quanity of an element to make them profitable to mine
- ores
- Galena is a source of this element
- lead
- The ability of a mineral to resist scratching
- hardness
- This is the mineral from the lab that responded to a magnetic field
- magnetite
- the hardest mineral known to man
- diamonds
- these 4 characteristics that define a substance as a mineral
-
1. naturally occuring
2. definite chemical composition
3. solid crystalline structure
4. inorganic - List 7 properties that can be used to indentify different minerals
-
1.color and appearance
2.hardness (Moh's Scale)
3.Luster (way a mineral reflects light)
4.Specific Gravity
5.Streak(color of a mineral when in powerdered form
6.Cleavage/Fracture - Cleavage breaks smoothor flat/ Fracture - uneven
7.Magnetic - like magnitite - double image/ calcite - Test a mineral for hardness
- use Moh's scale / list hardness of 10 minerals. Can test w/ fingernail, iron nail, another mineral
- Streak Test
- includes a piece of unglazed porcelian tile and a mineral to be tested. Rub mineral across tile to see powdered steak