1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
Not Available2.59-2.60
1
7.18
1.5 Fracture
Sub-Conchoidal, Splintery
Brittle, Metallic, Brittle, Metallic
1.6 Cleavage
{201} Imperfect, {100} Poor, {001} Poor
{001} Perfect, {110} Distinct, {101} Distinct
1.7 Mohs Hardness
1.8 Chemical Composition
Not Available
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)