Assertion: cryolite's index | /r/HasProperty | measured perpendicular
Facets:
value: for parachrysotile
type: OTHER
Source sentences:
text: The orthorhombic paratypes may be distinguished by the fact that, for orthochrysotile, the higher of the two observable refractive indices is measured parallel to the long axis of the fibres (as for clinochrysotile); whereas for parachrysotile the higher refractive index is measured perpendicular to the long axis of the fibres.