New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

one week of notes

by: Valeska Guzmán

one week of notes GEOL 3372

Valeska Guzmán
GPA 3.1
View Full Document for 0 Karma

View Full Document


Unlock These Notes for FREE

Enter your email below and we will instantly email you these Notes for Petrography

(Limited time offer)

Unlock Notes

Already have a StudySoup account? Login here

Unlock FREE Class Notes

Enter your email below to receive Petrography notes

Everyone needs better class notes. Enter your email and we will send you notes for this class for free.

Unlock FREE notes

About this Document

Peter Copeland
Class Notes




Popular in Petrography

Popular in Natural Sciences

This 2 page Class Notes was uploaded by Valeska Guzmán on Thursday January 21, 2016. The Class Notes belongs to GEOL 3372 at University of Houston taught by Peter Copeland in Spring 2016. Since its upload, it has received 21 views. For similar materials see Petrography in Natural Sciences at University of Houston.

Similar to GEOL 3372 at UH

Popular in Natural Sciences


Reviews for one week of notes


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 01/21/16
All about the slides, knowing without the book. How to use a microscope, why use it, to identify minerals in hand specimens in the field is not easy is easier in thin section. Look at color, cleavages, and angles from that you can determine rock type. It tell you a lot about the history looking at the deformation patterns, looking at reactions tell you history. For sedimentary you can tell what kind of rocks were deposited, whether this rocks have been weathered. These machines can tell you a lot: Polar petrographic microscope: this device polarizes the light, stage rotates 360. A rock is cut to be glued to the slide and thinned until almost gone. Thickness about 300 of mm light passes through 2 ndpolarizes which polarizes the light it polarizes at right angles looking at plain light (PPL), crossed polarized (XN) once called nicols prism. Physics of light- light vibrates and has a source different wavelengths= different colors. Some biotites have properties better than color light travels in waves. We are not describing light as particles. Light at bottom of microscope is white we can break this with a prism, creates different number of waves, we want to polarize light to distribute light. If something is vibrating slightly off you can divide vectors then add second polarizer--- black. When we out a sample you get an image the main conclusion is minerals change the light is the rock that did that creates different colors and have different properties. Nicols polarizer, cross nicols= both polars. Some minerals always black. Natural glass vs mineral= structure and crystallization Mineral=natural occurring, chemical composition glass doesn’t have internal structure, structure identical in every direction, is an isotropic behavior of light. Anisostrophic = mineral grain changes the light breaks it up into 2 phase, different in speed, change in orientation Birefringence or interference of colors= thin section They have different velocities and have certain orientations Optic= which orientation of fast and slow rays color=only plain light Some minerals like hornblende and tourmenaline pleochroism= changes color as you spin it around of same mineral Mineral property=bending of ight relief= 2 adjacent grains Olivine appears higher n=ratio of velocity of light Composition of olivine can change that is why it gets a range of different orientations Epoxy= brings together rock and glass changes in reflective index - N Higher-n lower = difference Thickness in thin section shows more retardation between rays Everything about the mineral affects velocities. When large .03 we will see colors Uniaxial vs biaxial


Buy Material

Are you sure you want to buy this material for

0 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Bentley McCaw University of Florida

"I was shooting for a perfect 4.0 GPA this semester. Having StudySoup as a study aid was critical to helping me achieve my goal...and I nailed it!"

Amaris Trozzo George Washington University

"I made $350 in just two days after posting my first study guide."

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Parker Thompson 500 Startups

"It's a great way for students to improve their educational experience and it seemed like a product that everybody wants, so all the people participating are winning."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.