Download The Scheme for Igneous Rock Identification

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

page
1
page
2
page
3
page
4
page
5
page
6
page
7
page
8
page
9
page
10
page
11
page
12
page
13
page
14
page
15
page
16
page
17
page
18
page
19
page
20
page
21
Document related concepts
no text concepts found
Transcript 
The Scheme for
Igneous Rock Identification
A Brief Tour
Grain size
Crystal size
Description
Igneous rocks have
“Intergrown Crystals”
Intergrown
Intergrown
Intergrown
Not Intergrown
Outside
theEarth:
volcano:
Extrusive
Inside the
Intrusive
Where it was formed
Bubbles?
Yes= Vesicular
No=Non-vesicular
Bubbles?
Very Light
Color
Neither Light nor Dark
NotVery Light Not Very Dark Very Dark
Light
Dark
Darkest
Lightest
Very Light Medium Density
Density
Light
Dense Very Dense
Finding The Minerals
Identify the rock.
Unless you have other information,
work in the middle of the rock’s
box.
This is the amount of Potassium Feldspar in the rock.
This is the amount of Quartz in the rock.
This is the amount of Plagioclase Feldspar in the rock.
Use tick marks on a scrap paper to measure the percentage.
Potassium Feldspar 25%
Quartz 40%
Practice
Name a light-colored, glassy
rock with no bubbles.
Name a coarse-grained, dense rock.
Name a dark colored , dense rock that can
be intrusive or extrusive
Related documents