A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Andalusite (chiastolite), Lancaster, Massachusetts |
|---|---|
| Description | Andalusite has composition Al2SiO5, the same as kyanite and sillimanite. The varietal name “chiastolite” is used for andalusite that shows the “Maltese cross” pattern seen here. Most of the dark material in this photo is fine grained mica and quartz. This sample is from Lancaster, Massachusetts. The field of view is about 8 cm across. |
| Location | USA ▹ Massachusetts ▹ Worcester. Near Lancaster. |
| Photographer | Shannon Heinle. 2001-04-24. |
| Collection | University of North Dakota Mineralogy Collection #1204. |
| Key words | chiastolite, andalusite, Massachusetts |
| Tech details | 634 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 388 |
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