minerals

for the geology exam good luck :)

what are the 5 things a mineral is?

1. naturally occurring
2. solid
3. inorganic
4. definite composition
5. internal crystalline structure

what are the different types of ore deposits?

1. magmatic deposits
2. hydrothermal deposits
3. secondary enrichment
4. sedimentary deposits
5. residual deposits
6. placer deposits

magmatic deposits

massive sulfide deposits (galena,zince mercury)

hydrothermal deposits

black smokers (sulfide minerals) ex. copper and gold

secondary enrichment

leaching and transport ex. copper, zinc, and lead

sedimentary deposits

minerals precipitate in sedimentary environment ex. BIF’s, manganese nodules, kaolinite

residual mineral deposit

left behind as weathering and leaching occur ex. aluminum

placer deposits

dense minerals accumulate in stream ex. gold and diamond