Zeolites of Nova Scotia

Zeolites of Nova Scotia – Lab Activity J

Part One: Read over the sheet on “Nova Scotia’s Classic Zeolites”

1. Describe what a zeolite is, and list examples that may be found in Ross Creek and Cape Split.

2. How do zeolites form? Describe relative to the North Mountain Basalt formation.

3. Why are zeolites valuable economically? Briefly explain.

Part Two: Go to the website http://mineral.galleries.com/minerals/silicate/zeolites.htm

1. What are zeolites characterized by, and why do they have a low specific gravity?

2. Why are zeolites most commonly used for water softeners? Explain.

3. Describe the three basic structural variations of zeolites with an example for each.

Use either the content bar for the above website, or simply type in after “silicate/” the name of the zeolite…For each of these, outline or list the required information given below.

Laumontite, Chabazite, Stilbite, Heulandite, Natrolite, Analcime

Name:

Chemical formula:

Colour:

Luster:

Crystal Habits:

Fracture:

Notable Occurrences in Canada:

Notes of Interest:

Part Three: Rock Samples

1. Obtain five samples and identify each.

2. Draw a sketch of each to illustrate the distinguishing characteristics of that particular zeolite.