Hemimorphite
UNB-2017-0175Rocks » Minerals
Description
Two samples of colourless fan-shaped aggregates of Hemimorphite. Euhedral crystals. One sample has a vitreous lustre the other sample has a dull lustre. Average fan aggregate size: 1.8 cm x 1.2 cm 1.5 cm.
Hemimorphite (Zn4Si2O7(OH)2 x H2O) can be white, colourless, yellowish, bluish or brownish in colour with a vitreous, adamantine or dull lustre. Streak is colourless and hardness is 4 1/2 to 5. Hemimorphite usually occurs as thin tabular or in fan-shaped aggregates but can also be mammillary, stalactitic or granular in form.
Specifications
| Object name | Hemimorphite |
|---|---|
| ID | UNB-2017-0175 |
| Legal status | Permanent collection |
| Category | Rock |
| Classification | Rock group: Minerals |
| Composition | Silicates |
| Origin | Unknown |
| Pieces | 2 |
| Partial | No |
| Measurements |
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Publications
- Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.