It is found only in Långban, Filipstad, Värmland, Sweden and at the Sterling Mine in New Jersey, United States.
Eveite is an orthorhombic mineral, which means it has three crystallographic axes of unequal lengths which are at 90° to one another.
Eveite is anisotropic, which means that its physical and optical properties differ with respect to direction.
It has high relief, which is the apparent topography exhibited by minerals in thin section as a consequence of refractive index.
It is biaxial, so it has two optic axes and three indices of refraction n depending on the crystallographic direction.