mineral review & geology in the news. review for thursdays assessment what are the...
TRANSCRIPT
Mineral Review &GEOLOGY in the NEWS
Review for Thursday’s 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/VM= 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 Indonesia’s major cities of Surabaya and Jakarta. Airpots closed. Country has 130 active volcanos.
SINK HOLE
• http://www.cbsnews.com/news/sinkhole-swallow-eight-cars-in-national-corvette-museum-in-kentucky/
Earthquake Watch…
• earthquake.usgs.gov/earthquakes/map/
Road Salt…
• http://www.npr.org/2014/02/17/275899324/got-road-salt-cities-across-the-country-are-running-out-of-it