Fibrous calcite
A variety of Calcite
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Formula:
CaCO3
Translucent calcite composed of fibrous crystals, which, like fibrous gypsum, with which it is often confused, causes a silky sheen. When cut cabochon, it produces a girasol or chatoyant effect, but not a true cat's-eye. Also like fibrous gypsum, it is called 'satin spar' but less correctly.
Unique Identifiers
Mindat ID:
52847 (as Fibrous calcite)
859 (as Calcite)
859 (as Calcite)
Long-form identifier:
mindat:1:1:52847:8 (as Fibrous calcite)
mindat:1:1:859:4 (as Calcite)
mindat:1:1:859:4 (as Calcite)
Chemistry of Fibrous calcite
Mindat Formula:
CaCO3
Element Weights:
Elements listed:
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Fibrous calcite
mindat.org URL:
https://www.mindat.org/min-52847.html
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References for Fibrous calcite
Localities for Fibrous calcite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Hungary | |
| Tóth et al. (2020) |
South America Plate | |
| Schrank et al. (2024) |
