Day 126: Igneous Rock ID Lab
By Mr. G on Mar 4, 2008 in Geology, Featured
We had completed most of the Igneous Rock notes guide in class yesterday, but a few small details remained to be ironed out at the start of today’s class. This included the meaning of porphyritic: an igneous rock with two distinct crystal sizes. This type of rock forms from either several different cooling environments or multiple composition elements.
Students then reviewed the properties of igneous rocks before completing the igneous rock identification lab. This lab was a quick way to earn an easy 10 points. Any students who missed today’s lab is reminded that the lab must be made up before the end of this week to earn points.
Homework: None.