Lawsonite has crystal habits of orthorhombic prismatic, which are crystals shaped like slender prisms, or tubular figures, which are form dimensions that are thin in one direction, both with two perfect cleavages. This crystal is transparent to translucent and varies in color from white to pale blue to colorless with a white streak and a vitreous or greasy luster. It has a relatively low specific gravity of 3.1g/cm3, and a pretty high hardness of 7.5 on Mohs scale of hardness, slightly higher than quartz. Under the microscope, lawsonite can be seen as blue, yellow, or colorless under plane polarized light while the stage is rotated. Lawsonite has three refractive indices of nα = 1.665 nβ = 1.672 - 1.676 nγ = 1.684 - 1.686, which produces a birefringence of δ = 0.019 - 0.021 and an optically positive biaxial interference figure.
Read more about this topic: Lawsonite
Other articles related to "physical properties, properties":
... ·CN has a radical on the carbon and a dipole moment of 1.45 Debye ... ·CN has a 2Σ ground electronic state ...
... Conversely, finding a sequence of functions ƒn with desirable properties that approximates a given limit function, is equally crucial ... and engineering lead to such equations and frequently solutions with particular physical properties are used as basis functions, often orthogonal ... the time-dependent Schrödinger equation in quantum mechanics describes the change of physical properties in time, by means of a partial differential equation whose solutions are called wavefunctions ...
... cases where (roughly speaking) the lower-level properties of a system determine its higher level properties ... is structured in to a kind of hierarchy of properties, where the higher level properties supervene on the lower level properties ... According to this type of view, social properties supervene on psychological properties, psychological properties supervene on biological properties, biological properties supervene on chemical properties ...
Famous quotes containing the words properties and/or physical:
“A drop of water has the properties of the sea, but cannot exhibit a storm. There is beauty of a concert, as well as of a flute; strength of a host, as well as of a hero.”
—Ralph Waldo Emerson (18031882)
“To survive there, you need the ambition of a Latin-American revolutionary, the ego of a grand opera tenor, and the physical stamina of a cow pony.”
—Billie Burke (18851970)