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).
1.4. Almost 85% of the atoms in the crust are oxygen or silicon atoms, and as a result the vast majority of common (rock-forming) minerals are silicates -- combinations of oxygen and silicon primarily with the other six (most common) metals listed above.Pure silica or quartz consists of only silicon and oxygen.Also see Meteorites). Most of the common rock-forming minerals are combinations of the most abundant materials in the Earth, taking into account the differentiation of the Earth into lighter and denser layers early in its history.