Chinese
Name:矽線石 / 硅線石
English Name:Sillimanite / Fibrolite
Chemical Composition:Al2SiO5
Crystal System:Orthorhombic
Hardness:6.0 - 7.0
SG:3.25
RI:1.658 - 1.678 (Double refraction
0.002)
Related Chakra:All
Locality:Brazil, central Europe, Myanmar, Sri Lanka, Czech Republic, India, Italy, Germany and Idaho in the United States.
Colour: Colourless to white, yellow, brown,
blue or purple
Remarks:Beautiful & rare, sillimanite
is found in 2 forms, 1: clear & glassy (Transparent); 2: the other
is silky & fibrous, display Cat's eye effect (Translucent). It is named for the US geologist Benjamin
Silliman (1779 - 1864). When it is found in its fibrous state,
it is often known as fibrolite.
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