A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Troostite (willemite), calcite and franklinite from Franklin, New Jersey |
|---|---|
| Description | The pinkish mineral is troostite, a manganese rich variety of willemite, ZnSi2O4. The white mineral is calcite, CaCO3. The black mineral is franklinite, a spinel mineral having general formula ZnFe2O4. This sample, from the world famous mineral collecting locality in Franklin, New Jersey, is 9 cm across. |
| Location | USA ▹ New Jersey. Near Franklin. |
| Photographer | Shannon Heinle. 2001-03-21. |
| Collection | University of North Dakota Mineralogy Collection #1135. |
| Key words | troostite, willemite, calcite, franklinite, Franklin, New Jersey |
| Tech details | 637 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 226 |
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