act turns first on the question of whether the claimant is an employee of the person or entity against whom the claim is brought there are a number of different statutory definitions for the nouns employer and employee in the act but no definition for the verb employ
Silicates are minerals that contain silicon atoms bonded to oxygen atoms. The basic building block for all silicate minerals is called a tetrahedron, where one silicon atom is bonded to 4 oxygen atoms (Figure 3.6).Silicate minerals also often contain other elements, such as calcium, iron, and magnesium.ilicates are minerals that contain silicon atoms bonded to oxygen atoms. The basic building block for all silicate minerals is called a tetrahedron, where one silicon atom is bonded to 4 oxygen atoms (Figure 3.6).
Another class of minerals found in the Earthâs crust is oxides, formed with oxygen and other chemical elements. A common oxide mineral is magnetite, composed of oxygen and iron. Making up 3 percent of the crust, magnetite is black with a dull to metallic luster.