Mineral Review & GEOLOGY in the NEWS

Review for Thursdays Assessment What are the characteristics of a mineral? HINT: there are 5! List & Describe the 4 processes that cause minerals to form I can think of 10 mineral properties used for identification…. Can you? WRITE THEM DOWN Gold has a density of 19.3g/cm3. What would the mass be of a gold brick that was 30cm x 8cm x 4cm?

What are the characteristics of a mineral? Naturally Occurring Solid Orderly crystalline structure Definite Chemical Composition Generally considered Inorganic

List & Describe the 4 processes that cause minerals to form Crystallization from Magma Precipitation Pressure and Temperature Hydrothermal Solutions

I can think of 10 mineral properties used for identification…. Luster Crystal form Streak Mohs Hardness Magnetism Double refraction Cleavage Fracture Density Odor

Gold has a density of 19.3g/cm3. What would the mass be of a gold brick that was 30cm x 8cm x 4cm? D=M/V M= D * V M= (19.3g/cm3) * (30*8*4) M= 18,528g or 18.5kg

Questions?

GEOLOGY IN THE NEWS Volcano eruption in Indonesia kills 3, forces 100,000 to be evacuated Mount Kelud on Java Island sounded like bombs exploding. Ash and grit fell onto Indonesias major cities of Surabaya and Jakarta. Airpots closed. Country has 130 active volcanos.

SINK HOLE m/news/sinkhole- swallow-eight-cars-in- national-corvette- museum-in-kentucky/ m/news/sinkhole- swallow-eight-cars-in- national-corvette- museum-in-kentucky/

Earthquake Watch… earthquake.usgs.gov/earthquakes/map/

Road Salt… 24/got-road-salt-cities-across-the-country- are-running-out-of-it 24/got-road-salt-cities-across-the-country- are-running-out-of-it