1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.3 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.7 Specific Gravity
2.59-2.601.98-2.25
1
7.18
1.8 Fracture
Brittle, Metallic, Brittle, Metallic
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.9 Cleavage
{001} Perfect, {110} Distinct, {101} Distinct
Not Available
1.10 Mohs Hardness
1.11 Chemical Composition
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
SiO 2 + H 2OUlrich Henn and Claudio C.