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).
Minerals that are not pure elements are made of compounds. For example, the mineral quartz is made of the compound silicon dioxide, or SiO 2. This compound has one atom of the element silicon for every two atoms of the element oxygen.When a mineral has a different chemical formula, it is a different mineral.or example, the mineral hematite has two iron atoms for every three oxygen atoms, while the mineral magnetite has three iron atoms for every four oxygen atoms. Many minerals contain more complex chemical compounds that are made of several elements.