{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

# 1.25 - =mineral QUARTZ-fixed...

This preview shows page 1. Sign up to view the full content.

Radius of the earth= 6370 Km Core radius=2250 Km outer 1220=inner mantle=2900 Km (-100 Km crust) VOLUME OF THE EARTH—on quiz 1 Density provides clues to composition (elements-atomic mass) D=m/v Calculate v from knowing radius (6371 Km) V=4/3 pi r^3 We can’t measure M directly, but it is related to gravitational acceleration We can measure g which is related to period Density=5.1 Lower temperature at center: -matter accumulated in small gravitational field -after lunar size heat built up -heat lost by radiation elements led us to the concept of density composition 3 layer structure MINERALS AND CRYSTALS -naturally occurring compound -Si-O example -SiO2=electrical neutrality
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: =mineral QUARTZ-fixed composition-shape (external/internal)-perfect shapes are results of arrangement of atoms and space lattice (3d arrangement) ex:salt-minerals with internal symmetry=crystals/amorphous-sometimes a certain compound can occur as 2 or more species of crystals=polymorphism how do we know about internal geometry of atoms in crystals?-Braggs law-fixed distance between atomic planes-by using bragg’s law we can measure the distance between atomic planes and classify ALL minerals-internal arrangement of atoms is often reflected in external shape crystal-diameter of an atom~10 ^-8 how many atoms can u fit in a 1 cm cube?ON QUIZ 1...
View Full Document

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern