A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Bronzite (orthopyroxene) from the Stillwater complex, Montana USA |
|---|---|
| Description | Common orthopyroxene is mostly a solution of two end members: enstatite (MgSiO3) and ferrosilite (FeSiO3). Bronzite is a type of Mg-rich orthopyroxene containing 10-30% ferrosilite. Orthopyroxenes containing greater amounts of ferrosilite are termed hypersthene. Sometimes weathering gives bronzite a bronze tarnish; thus the name. This sample, about 9 cm across, is from an orthopyroxene rich layer in the Stillwater Complex, a Precambrian igneous complex in Montana. |
| Location | USA ▹ Montana. Near Nye. Stillwater Complex. |
| Photographer | Shannon Heinle. 2001-04-24. |
| Collection | University of North Dakota Mineralogy Collection #6. |
| Key words | bronzite, Montana |
| Tech details | 1011 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 406 |
 | |