1. Amphibole group Mineral Presentation
by-nc-sa: Giant Gingko
University of Minnesota, Department of Geology and Geophysics, Dr. Kent Kirkby. Funded in part by FIPSE.

2. Amphibole minerals are found in igneous and metamorphic rocks.
Amphibole minerals form needle-like or prism-shaped crystals.
USGS
The minerals collectively know as asbestos are members of the amphibole mineral group.
Most amphibole minerals are not asbestos.
by-nc: meganpru

3. Amphibole is found in intrusive igneous rocks.
granite
lamprophyre
© Bruce Molnia, (Earth Science Image Bank)
by-nc-sa: Ron Schott
Amphibole is found in intrusive igneous rocks.
USGS
USGS
granodiorite
diorite

4. Amphibole is found in extrusive igneous rocks.
Mount St. Helens
by-nc-sa: Ron Schott
rhyolite
USGS
USGS
dacite
andesite

5. Amphibole is found in metamorphic rocks.
USGS
Amphibole (dark) and plagioclase (light) crystals in amphibolite.
schist
gneiss
© Cornel Manecan (Earth Science Image Bank)
by-nc-nd: GOC53

6. amphibolite cut by dikes
Greenstone belts, named for the green color of amphibole, contain metamorphosed igneous and sedimentary rock.
by-nc-sa: Ron Schott
by: kevinzim
by-nc-sa: Ron Schott
metamorphosed limestone with stromatalites
metamorphosed pillow basalt

7. Microscopic photograph of asbestos.
The amphiboles in metamorphic rocks can form very long and thin crystals.
Microscopic photograph of asbestos.
public domain
Most commercial asbestos comes from chrysotile, a fibrous variety of the mineral serpentine (amphibole).
USGS (Earth Science Image Bank)
ATSDR/CDC

8. Amphibole group Mineral Presentation
by-nc-nd: patricia imagines
by-nc-nd: Niemster
Asbestos was used in older buildings as insulation, roofing material, and other heat or fire proof applications.
by-nc: AlbinoFlea
University of Minnesota, Department of Geology and Geophysics, Dr. Kent Kirkby. Funded in part by FIPSE.

9. Asbestos removal is happening all over the world.
by-nc-nd: maxnathans
by-nc-nd: Alain Bachellier
by-sa: Michael Pereckas
by-nc: Erik B

10. by-nc-sa: Ron Schott
by-nd: amishah
Amphiboles are an important component of many decorative building stones, where their colors contribute to the stones’ decorative pattern.
by-nc-sa: James_C

11. Jade is made of amphibole or pyroxene, and prized in Chinese, Maori and Aztec cultures.
by-nc-sa: libraryman
by-nc-sa: mharrsch

12. Nephrite (an amphibole) and jadeite (a pyroxene) are nearly indistinguishable.
© StoneTrust (Earth Science Image Bank)
by-nc: Mister Wind-Up Bird
by-nc-nd: Hunter333
by-nc-nd: sanofi2498
by-sa: cygnoir

13. Amphibole
group
by-nc-sa: Giant Gingko

14. Amphibole group Mineral Presentation
media rights
public domain (none)
© Copyright. All rights reserved
by-nc-sa by
by-nd
by-sa
by-nc-nd
Creative Commons Licenses
GNU GNU Free Documentation License
Our notation description
Many of the photos in this presentation were obtained through Flickr and Wikipedia.
Funded by FIPSE and by the University of Minnesota. Compiled for Dr. Kent Kirkby, Department of Geology and Geophysics, by Kate Rosok, Each displayed image retains its original media rights. For educational purposes only; not to be used commercially.
University of Minnesota, Department of Geology and Geophysics, Dr. Kent Kirkby. Funded in part by FIPSE.