Department
of Earth Science |
Northeastern
Illinois University
INTRODUCTION
TO EARTH SCIENCE
ESCI 121
Fall 2006
Daily
Objectives #12 (October 5, 2006)
Dr. Sanders
By the end of today’s class, you should be able to do the
following:
Review:
* Describe what is meant by the following terms used to
describe mineral properties:
q hardness
q luster
q streak
q cleavage
q specific
gravity q color q solubility
q odor
New Today:
* Sort and classify samples of igenous rocks.
* Use simple laboratory tools (dissecting needle, copper
penny, hand lens, scratch plate, streak plate) to investigate the
properties of common igneous rock-forming minerals.
* Use a mineral identification key to identify hand samples of
common igneous rock-forming minerals.
* Explain the relationship between cooling rate and crystal size.
* Define and describe what is meant by the terms plutonic
and volcanic
as they apply to igneous rocks.
* Define and describe what is meant by the terms intrusive
and extrusive
as they apply to igneous rocks.
* Define and describe what is meant by mafic and felsic
mineralogic compositions of igneous rocks.
* Use a rock key to identify hand samples of
igneous rocks.
Don't forget the homework that was
assigned last time and is due Tuesday: Get it by visiting
the page
for our course syllabus and clicking on "Homework" in the yellow
box near the top of the page.
© 2006 Laura L. Sanders. Last updated October 5, 2006.