A Geoscience Digital Image Library
A Geoscience Digital Image Library
| Title | Hemimorphite |
|---|---|
| Description | The whitish crusty material is hemimorphite, also known as calamine. It is a silicate with formula Zn4Si2O7(OH)2-H2O. Hemimorphite comes in many hues. This sample is a bit unusual; more typically it is blue, green, white, colorless, brown or yellow. Specimens of hemimorphite tend to be of two very different forms. One form produces very glassy, white to translucent, thin, bladed crystals, often well formed showing many crystal faces. The other form produces a blue to blue-green botryoidal crust. This sample is approximately 8 cm across. |
| Location | Italy ▹ Sicily. Near Inglesias. |
| Photographer | Shannon Heinle. 2001-05-22. |
| Collection | University of North Dakota Mineralogy Collection #1244. |
| Key words | hemimorphite, calamine |
| Tech details | 598 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera. |
| GeoDIL number | 559 |
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