Rosterite
A variety of 'Caesium Beryl' [Beryl]
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About Rosterite
Formula:
Be3Al2(Si6O18)
Name:
Named for G.Roster
First Recorded Locality:
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 vorobyevite and considered a synonym of such by A.M. Clark in "Hey's Mineral Index" (1993), 603.
This name should not be used to describe beryls from other localities.
Visit gemdat.org for gemological information about Rosterite.
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 vorobyevite and considered a synonym of such by A.M. Clark in "Hey's Mineral Index" (1993), 603.
This name should not be used to describe beryls from other localities.
Visit gemdat.org for gemological information about Rosterite.Unique Identifiers
Mindat ID:
6544 (as Rosterite)
819 (as Beryl)
819 (as Beryl)
Long-form identifier:
mindat:1:1:6544:9 (as Rosterite)
mindat:1:1:819:6 (as Beryl)
mindat:1:1:819:6 (as Beryl)
Chemistry of Rosterite
Mindat Formula:
Be3Al2(Si6O18)
Element Weights:
Elements listed:
First Recorded Occurrence of Rosterite
Other Language Names for Rosterite
German:Rosterit
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 Rosterite
mindat.org URL:
https://www.mindat.org/min-6544.html
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References for Rosterite
Localities for Rosterite
Showing 1 localities.
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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 (FRL) | |
| G.Grattarola (1880) |
San Piero in Campo, Campo nell'Elba, Livorno Province, Tuscany, Italy