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Starlite
Starlite

Fluorite
Fluorite



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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
slightly water soluble and in hot hydrochloric acid
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.91-4.733.00-3.25
Amber
1 7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
1.6 Cleavage
Not Available
Octahedral, perfect on {111}, parting on {011}
1.7 Mohs Hardness
6.5-7.54
Amber
2 10
1.8 Chemical Composition
ZrSiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)
CaF2