Fichas
Minerals
Fichas del conjunto (16)
- 1Define OreA rock that contains a mineral that can be extracted (mined for profit)
- 2What are 3 characteristics of a gem?Rare, valuable, and hardness (5.5+)
- 3Define silicatesGroup of rock forming minerals that contain the elements silicon and oxygen. (MOST COMMON GROUP)
- 4What is one way a mineral forms?Solution: dissolved minerals are in a liquid that evaporates. (hot or cool) Example: Halite; Gold
- 5What are the 5 characteristics of minerals?1. Naturally occurring: Not man made
2. Inorganic: Not living nor ever was
3. Solid: Not a liquid or a gas; unchanging shape and volume
4. Crystalline Structure: Pattern of atoms
5. Definite Chemical Composition: Unchanging recipe of elements - 6What is the most unreliable test to identify a mineral?Color
- 7What are the 7 ways to identify a mineral?1. Color
2. Cleavage and fracture
3. Density
4. Hardness
5. Streak
6. Luster
7. Special properties - 8Why is color un reliable?Color; Not reliable; Many minerals are the same color; some minerals come in a variety of colors
- 9Define cleavage and fractureThe way a mineral breaks
Smooth- Cleavage
Jagged- Fracture - 10Define DensityMass/Volume
**VERY RELIABLE**
1- Mass + weigh it
2- Volume + water displacement - 11Define HardnessA minerals resistance to being scratched
10- Diamond (hardest)
1- Talc (softest)
Fingernail= 2.5
Penny= 3.5
Iron nail= 4.5
Glass= 5.5
RANGE:
(0-2.5)
(5.5 or 5.5+-10) - 12Define StreakThe color of the mineral in powder form; Use a streak plate
- 13Define LusterIt's direclty related to chemical composition of minerals; How light interacts with a mineral;
Examples: Metallic, waxy, wavy, dull, glassy - 14What is one way a mineral forms?Magma/lava cooling: Crystal size: amount of time and space
Small= fast cooling with large space or small space; slow cooling with small space
Large= Lots of time to cool AND lots of space - 15Define Special PropertiesTEXTURE, smell, conductivity, magnetism, reaction to acid, glows under a black light, TASTE
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- Rocks and minerals
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- jillian.gaines.j
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