Caesium Beryl
A variety of 'Alkali-beryl' [Beryl]
This page is currently not sponsored. Click here to sponsor this page.
About Caesium Beryl
Formula:
Be3Al2(Si6O18)
First Recorded Locality:
The term 'caesium beryl' refers to a caesium-bearing beryl. The names vorobyevite and rosterite have both been used to refer to such material, however the use of these names should be discouraged.
Unique Identifiers
Mindat ID:
6545 (as Caesium Beryl)
819 (as Beryl)
819 (as Beryl)
Long-form identifier:
mindat:1:1:6545:6 (as Caesium Beryl)
mindat:1:1:819:6 (as Beryl)
mindat:1:1:819:6 (as Beryl)
Chemistry of Caesium Beryl
Mindat Formula:
Be3Al2(Si6O18)
Element Weights:
Elements listed:
First Recorded Occurrence of Caesium Beryl
Other Language Names for Caesium Beryl
French:Béryl césifière
German:Cäsiumberyll
Varieties of Caesium Beryl
| Rosterite | An alkali beryl from San Piero in Campo, Elba, Italy. Described as a new species by Grattarola (1880). Discredited by Zambonini and Caglioti (1928) and recognised as an alkali beryl with 0.4% Li2O, 4.2% Na2O, 2.25% K2O and 0.9% Cs2O. Similar to vorobyev... |
Common Associates
Associations Based on Photo Data:
| 4 photos of Caesium Beryl associated with 'Morganite' | Be3Al2(Si6O18) |
| 2 photos of Caesium Beryl associated with Elbaite | Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH) |
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 Caesium Beryl
mindat.org URL:
https://www.mindat.org/min-6545.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
Mineral Dealers:
References for Caesium Beryl
Reference List:
Localities for Caesium Beryl
Showing 6 localities.
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.
Italy | |
| [var: Rosterite] G.Grattarola (1880) |
Madagascar | |
| Knut Edvard Larsen collection # M13 |
| Knut Edvard Larsen collection # M-107 |
Myanmar | |
| Martin Slama collection |
Poland | |
| Pieczka et al. (2015) +1 other reference |
USA (FRL) | |
| S.L.Penfield (1888) |
Facciatoia Quarry, San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy