| Identification | Back Directory | [Name]
Bertrandite (Be4(OH)2O(SiO3)2) | [CAS]
12161-82-9 | [Synonyms]
BERTRANDITE
BERTRONDITE
Bertrandite (Be4(OH)2O(SiO3)2) | [EINECS(EC#)]
235-299-9 | [Molecular Formula]
Be4H2O9Si2 | [MDL Number]
MFCD01939457 | [Molecular Weight]
238.23 |
| Hazard Information | Back Directory | [Chemical Properties]
Transparent, colorless to pale-yellow, beryllium silicate with orthorhombic crystals. | [Hazard]
Carcinogen. | [Physical properties]
Habit: well formed prismatic or tabullar hexagonal crystals, with pinacoidal {1010},
{0001}, or prism {1120} or pyramidal terminations.
Luster: vitreous (i.e., glassy).
Diaphaneity: translucent to transparent.
Color: colorless or pale yellow.
Streak: white.
Cleavage: [001] perfect, [110] distinct, [101] distinct.
Fracture: brittle.
Occurrence: commonly found in Be-bearing pegmatites and may be derived from the
alteration of beryl. | [Industrial uses]
Beryllia, and beryllium chemicals | [Safety Profile]
Confirmed carcinogen. Whenheated to decomposition it emits very toxic fumes of BeO. |
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