WebDiamond and graphite have the same chemical composition. Compare and contrast these two to explain why diamond is a gem and graphite is not? They have the same chemical composition, different crystal structure What other mineral besides a diamond would be best for making sand paper and why? Quartz because its a 7 on the Moh's scale WebDiamond is another carbon polymorph; although composed of the element carbon, like graphite, diamond does not have much else in common. Each …

Graphite - USGS

WebThe process of metamorphism does not melt the rocks, but instead transforms them into denser, more compact rocks. New minerals are created either by rearrangement of mineral components or by reactions with fluids that enter the rocks. Pressure or temperature can even change previously metamorphosed rocks into new types. WebCarbon atoms arranged in a different pattern form the mineral diamond — the hardest natural substance known. Although they have the same chemical composition, their different internal crystal structures form very different materials. A mineral is composed of two or more elements. But, sometimes single element minerals like sulphur, copper ... football pitch line marking machine

Diamond Definition, Properties, Color, Applications, & Facts

Webhomes and offices). The mineral can be easily recognized by its copper-red color on fresh surfaces (Figure 3), although it frequently tarnishes to a dull reddish-brown (Figure 4). Like the other native metals, it is relatively soft (2.5-3 on Mohs hardness scale) and has a high specific gravity compared to most minerals (near 9). Figure 3. WebThere are two main types of metamorphic rocks: those that are foliated because they have formed in an environment with either directed pressure or shear stress, and those that are not foliated because they have formed in an environment without directed pressure or relatively near the surface with very little pressure at all. Web8.1 Different Kinds of Metamorphism. Metamorphic rocks, and the processes that create them, are key parts of the rock cycle that relates igneous, sedimentary, and metamorphic rocks. Most metamorphic rocks form when heat, pressure, or chemically reactive fluids cause changes in preexisting rocks (Figure 8.2). football pitch line marking paint