Question | Answer |
Whats an ore? | a mineral or rock that contains a useful substance that can be mined at a profit |
Whats a gem? | a highly prized mineral because of its rareness and beauty |
whats a fracture? | when minerals break with uneven, rough or jagged structures |
Whats the cleavage of a mineral? | when minerals break along smooth,flat surfaces |
Whats the luster? | the way a mineral reflects light (metallic,nonmettalic) |
Whats the hardness? | the measure of how easily a mineral can be scratched |
Whats a mineral? | element or compound that has its structures determined by repeating patterns of atoms |
What is magma? | hot melted rock material |
What is a silicate? | mineral containing silicon,oxygen and 1 or more elements |
Whats the streak? | the color of a mineral when its in powder form |
What are the characteristics that all minerals share? | formed by natural processes,inorganic,element or compund with def. chemical composition and they r crystalline solids |
What are the 2 ways that minerals can form? | by magma or solutions |
What determines the size of a crystal? | magma-how fast the magma cools |
What does crystalline mean? | that atoms are arranges in a pattern thats repeated over and over again. |
What are the 7 physical properties used to identify minerals? | color,hardness,luster,streak,cleavage,fracture,crystal form and other properties |
Who made the Mohs Scale? | Friedrich Mohs |
What does the Mohs scale help determine? | helps determine minerals and how hard they are |
What is the hardest and softest mineral on the Mohs scale? | hardest: diamonds (used to cut things)Softest: talc |
Why are gems more valuaable than other minerals? | gems r rare and beautiful they may also b clearer, brighter and more colorful and some gems can be cut and polished to look better |
What are some elements in minerals? | ores, vein minerals and minerals with titanium |
What are some types of ores? | iron, aluminum, zinc and titanium |
What are ores used in? | frying pans, ship parts and magnets |
What are some things that have aluminum in them? | bikes, sodacans, foil and lightwieght parts for cars |
sphalerite is used in what? | batteries |
What are some things that have titanium in them? | golf clubs, racing bike, kneww or hip replacements, car parts, glassframes,tennis rackets, racing and bball wheelchairs |