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Londonite - Rhodizite

#PD31051

Londonite - Rhodizite

#PD31051
Availability
Sold
Size
5 x 3 x 3.5 cm - Miniature 
Formula
CsBe5Al4B11O28 (RRUFF)
Locality
Antsongomvato mine, Betroka dist., Antananarivo, Madagascar
Tagged
beryllium , pegmatite mineral

Dr. David london analyzed 50 plus Londonites-Rhodizite and found them all to be zoned and mostly rimmed by Londonite, the cesium-dominant analogue Rhodizite. This specimen contains a large 1cm complete crystal about three-quarter of which is well exposed.

Londonite

Formula
CsBe5Al4B11O28 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals 
Cleavage
None, None, None 
Luster
Vitreous (Glassy) 
Color
colorless, white, yellow 
Streak
white 
Class
Isometric - Hextetrahedral 
Fracture
Brittle - Conchoidal 
Hardness

Data courtesy of Webmineral.

Collection
Phillips Collection
Mineralpedia
View Londonite
On Dakota Matrix
Previously Sold Londonite
On Dakota Matrix
Other Available Londonite
WebMineral
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Mindat
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