University:
Amherst College
Course:
GEOL 271 | Mineralogy
Academic year:

2022
Views:

482

Pages:

50
Author:

Nathaly Davidson

Crust: low density rocks Mantle: high density rocks Core: very high density metal core mechanical) layering mechanical layers lithosphere: rigid & strong asthenosphere: plastic & weak mesosphere: plastic but stronger chemical layers crust: low density silicate mantle: medium density silicate core: iron-nickel metal Mineral Rock Minerals Mineral Rocks Rock What is a mineral? What is a mineral? A component of a rock. What is a rock? An aggregate of minerals. What is a mineral? A NATURALLY OCCURRING INORGANIC CRYSTALLINE SOLID SUBSTANCE WITH A DEFINABLE CHEMICAL COMPOSITION AND SPECIFIC PHYSICAL PROPERTIES A NATURALLY OCCURRING INORGANIC CRYSTALLINE SOLID SUBSTANCE WITH A DEFINABLE CHEMICAL COMPOSITION AND SPECIFIC PHYSICAL PROPERTIES CRYSTALLINE SOLID THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) by weight 0.1% by volume 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) by weight 0.4% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% by volume 0.03% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER EIGHT ATOM IN THE CRUST by weight magnesium (Mg) 2.1% by volume 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER SEVEN ATOM IN THE CRUST potassium (K) by weight 2.6% by volume 1.83% THE NUMBER EIGHT ATOM IN THE CRUST magnesium (Mg) 2.1% 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER SIX ATOM IN THE CRUST sodium (Na) by weight 2.8% by volume 1.32% THE NUMBER SEVEN ATOM IN THE CRUST potassium (K) 2.6% 1.83% THE NUMBER EIGHT ATOM IN THE CRUST magnesium (Mg) 2.1% 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER FIVE ATOM IN THE CRUST calcium (Ca) by weight 3.6% by volume 1.03% THE NUMBER SIX ATOM IN THE CRUST sodium (Na) 2.8% 1.32% THE NUMBER SEVEN ATOM IN THE CRUST potassium (K) 2.6% 1.83% THE NUMBER EIGHT ATOM IN THE CRUST magnesium (Mg) 2.1% 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER FOUR ATOM IN THE CRUST iron (Fe) by weight 5.0% by volume 0.42% THE NUMBER FIVE ATOM IN THE CRUST calcium (Ca) 3.6% 1.03% THE NUMBER SIX ATOM IN THE CRUST sodium (Na) 2.8% 1.32% THE NUMBER SEVEN ATOM IN THE CRUST potassium (K) 2.6% 1.83% THE NUMBER EIGHT ATOM IN THE CRUST magnesium (Mg) 2.1% 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER THREE ATOM IN THE CRUST aluminum (Al) by weight 8.1% by volume 0.47% THE NUMBER FOUR ATOM IN THE CRUST iron (Fe) 5.0% 0.42% THE NUMBER FIVE ATOM IN THE CRUST calcium (Ca) 3.6% 1.03% THE NUMBER SIX ATOM IN THE CRUST sodium (Na) 2.8% 1.32% THE NUMBER SEVEN ATOM IN THE CRUST potassium (K) 2.6% 1.83% THE NUMBER EIGHT ATOM IN THE CRUST magnesium (Mg) 2.1% 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER TWO ATOM IN THE CRUST silicon (Si) by weight 27.7 % by volume 0.86% THE NUMBER THREE ATOM IN THE CRUST aluminum (Al) 8.1% 0.47% THE NUMBER FOUR ATOM IN THE CRUST iron (Fe) 5.0% 0.42% THE NUMBER FIVE ATOM IN THE CRUST calcium (Ca) 3.6% 1.03% THE NUMBER SIX ATOM IN THE CRUST sodium (Na) 2.8% 1.32% THE NUMBER SEVEN ATOM IN THE CRUST potassium (K) 2.6% 1.83% THE NUMBER EIGHT ATOM IN THE CRUST magnesium (Mg) 2.1% 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER ONE ATOM IN THE CRUST oxygen (O) by weight 46.6% by volume 93.6% THE NUMBER TWO ATOM IN THE CRUST silicon (Si) 27.7 % 0.86% THE NUMBER THREE ATOM IN THE CRUST aluminum (Al) 8.1% 0.47% THE NUMBER FOUR ATOM IN THE CRUST iron (Fe) 5.0% 0.42% THE NUMBER FIVE ATOM IN THE CRUST calcium (Ca) 3.6% 1.03% THE NUMBER SIX ATOM IN THE CRUST sodium (Na) 2.8% 1.32% THE NUMBER SEVEN ATOM IN THE CRUST potassium (K) 2.6% 1.83% THE NUMBER EIGHT ATOM IN THE CRUST magnesium (Mg) 2.1% 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TEN ATOMS AVAILABLE IN CRUST THE NUMBER ONE ATOM IN THE CRUST oxygen (O) by weight 46.6% by volume 93.6% THE NUMBER TWO ATOM IN THE CRUST silicon (Si) 27.7 % 0.86% THE NUMBER THREE ATOM IN THE CRUST aluminum (Al) 8.1% 0.47% THE NUMBER FOUR ATOM IN THE CRUST iron (Fe) 5.0% 0.42% THE NUMBER FIVE ATOM IN THE CRUST calcium (Ca) 3.6% 1.03% THE NUMBER SIX ATOM IN THE CRUST sodium (Na) 2.8% 1.32% THE NUMBER SEVEN ATOM IN THE CRUST potassium (K) 2.6% 1.83% THE NUMBER EIGHT ATOM IN THE CRUST magnesium (Mg) 2.1% 0.29% THE NUMBER NINE ATOM IN THE CRUST titanium (Ti) 0.4% 0.03% THE NUMBER TEN ATOM IN THE CRUST hydrogen (H) 0.1% 0.16% THE TOP TWO ATOMS IN THE CRUST NUMBER ONE oxygen (O) by volume 93.6% NUMBER TWO silicon (Si) 0.86% THE TOP TWO ATOMS IN THE ATMOSPHERE NUMBER ONE nitrogen (N) by volume 78% NUMBER TWO oxygen (O) 21% Silicate mineral -2 O +4 Si silica tetrahedron composed of silicon and oxygen Silica tetrahedron -2 O -4 SiO4 +4 Si Each oxygen can bond to another atom island silicate: all O’s bond to other atoms Each oxygen bonds to a magnesium atom olivine chain silicates Si tetrahedra link to form chains bridging oxygen link Si tetrahedra apical oxygen bonds to other elements island silicate all oxygens are apical oxygens chain silicates apical oxygens link chains to other elements pyroxene amphibole sheet silicates Si tetrahedra link to form sheets apical oxygen bridging oxygen sheet silicates apical oxygens link sheets to other elements mica clay framework silicates Si tetrahedra link to form 3d framework all oxygens are bridging oxygens quartz feldspar Igneous rocks form from the crystallization of magma: on the surface as lava flows or beneath the earth in magma chambers Igneous rocks are composed of interlocking mineral grains igneous rocks Sedimentary rocks form from sediment weathered from pre-existing rocks Sedimentary rocks are well layered Flow and recrystallization in the solid state Metamorphic rocks form from pre-existing igneous or sedimentary rocks

Minerals and Rocks

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