A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Bournonite from Harz, Germany |
|---|---|
| Description | Bournonite, CuPbSbS3 (copper lead antimony sulfide), is also called “cog wheel ore” because of the cog wheel shape that the twinned crystals form. Twinning is common in bournonite and if a crystal repeatitively twins it can form a type of twin called a trilling. |
| Location | Germany. Near Harz. |
| Photographer | Darla Sondrol. 2001-07-18. |
| Collection | University of North Dakota Mineralogy Collection #260. |
| Key words | Bournonite, trilling, Germany |
| Tech details | 846 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 1277 |
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