Calcite in Geode
UNB-2017-0112Minerals » Carbonates
Description
White stalactitic Calcite within a Geode. Vitreous lustre.
Calcite (CaCO3) can be white, colourless or pale shades of grey, yellow, red, green, blue, brown to black when impure. Calcite can have a vitreous or dull lustre and streak is white. Hardness is 3 and cleavage is perfect in three directions and forms a rhombohedron. Calcite can have crystals that are rhombohedron, scalenohedron and prismatic but can also be tabular, acicular, cleavable, granular, compact, stalactitic, oolitic or earthy.
Specifications
| Object name | Calcite in Geode |
|---|---|
| ID | UNB-2017-0112 |
| Legal status | Permanent collection |
| Category | Mineral |
| Classification | Mineral group: Carbonates |
| Composition |
|
| Origin | Unknown |
| Pieces | 1 |
| Partial | No |
| Measurements |
|
Publications
- Chesterman, C.W. 1979. Audubon Society, Field Guide to North American Rocks and Minerals. Knopf.