PPT-Properties of Minerals Luster

Appearance of a fresh mineral surface in reflected light 1 Metallic Luster 2 Vitreous Luster glassy luster 3 Resinous Luster 4 Pearly Luster 5 Silky luster Pyrite Quartz Orpiment Muscovite. So what is a mineral?. What are the characteristics of all minerals?. Mineral . Characteristics. 1. A mineral occurs naturally.. 2. A mineral is solid.. 3. A mineral has a definite chemical composition.. Geologists use characteristics to tell one mineral from another. What is a Mineral?. Must be a solid.. Must occur in nature.. Must have a definable chemical composition (. NaCl. ).. Must have a crystalline structure.. Scientists . use characteristics to tell one mineral from another. Mineral Properties we will . be investigating:. Luster. Hardness. Streak. Transparency. Luster. Refers to the way light reflects from the surface of the mineral. . By: Gabriel Falade. Hardness. The hardness is 6.5-7.5. I think that it in medium-hard range because the mineral think or maybe since it’s a metamorphic rock and a metamorphic rock is made of more layers I think more layers is harder. . By: Christopher Vasquez. Chemical Formula/Composition. Halite’s chemical composition is NaCl, or sodium chloride (salt), which explains its salty taste.. Molecular Weight: 58.44 . gm. Density: 2.17 (High Specific Gravity). . and its. Characteristics. Hydroxide. is the name for the diatomic anion OH. −. , consisting of covalently bonded oxygen and hydrogen atoms, usually derived from the dissociation of a base. It is one of the simplest and most pervasive diatomic ions known.. Lesson 5: How are Minerals Identified?. Opening Activity. O. pen Science textbook to page 276.. Open Science workbook to page 90A to review home learning.. Open Science folder to review vocabulary words and outline for the chapter.. UNIT -4. They assist in the identification of minerals – . study their optical properties under the microscope. . . Minerals . are inorganic chemical compounds having a certain lattice shape, size and symmetry, being a result of the geometrical arrangement of the constituents (chemical elements such as Si, Al, O, . Definition. A mineral is:. Naturally occurring substance. Inorganic (not living). Solid. Has a definite (specific) crystal structure. Made of a specific chemical compound. Classification of Minerals. 1) Rocks cannot be made of organic material. 2) Luster is classified as metallic and non-metallic. 3) Scientist use tests to identify minerals. 4) Minerals that make up rocks can be mined as ores. 5) A liquid or gas can be classified as a mineral. A pure substance, such as a mineral, can be identified from observations and tests performed to determine its physical properties. These properties are based on the unique structure of the substance.. naturally. existing . chemical compounds.. 2)Minerals can be identified by their . physical properties. .. 3)What are the four characteristics of a mineral?. Naturally occurring. Crystal Structure/Chemical Substance. M. ara Saunders. Nickel and Cobalt. Nickel and cobalt were mined at the ocean floors by ocean miners. These miners had to go down 4,000-6,000m in the ocean. Nickel is used for well… nickels and Cobalt is used for fuel. Nickel has a silvery-white luster and a metallic gray color. Then Cobalt has a reddish-silver white color, metallic luster, and a grayish black streak. . NATURE . SUNDAY ACADEMY. ALL SITE ACTIVITY. 2013-2014. SA Schedule. 11:00 . – . 11:15 am. . Cultural Connection. 11:15 . – . 11:30 am Introduction Video Ground Rules Film. . 12:00 .