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Pectolite
Pectolite

Emerald
Emerald



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Pectolite
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1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Hard
1.4 Specific Gravity
2.74-2.902.67-2.78
Amber
1 7.18
1.5 Fracture
Uneven, Gemstones (2009), Splintery
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
1.6 Cleavage
Perfect on {100} and {001}
Imperfect on the [0001]
1.7 Mohs Hardness
4.5-57.5-8
Amber
2 10
1.8 Chemical Composition
Ca 2NaHSi 3O 9Ulrich Henn and Claudio C.
Be3Al2SiO6