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Color: Many minerals occur in a very limited number of colors or shades of a single color, and thus, color is an easily identifiable characteristic that can be a good place to start when identifying a mineral specimen. For example, the minerals pyrite and gold are always metallic yellow in color (although they differ in other characteristicsMore
Mineral Identification Tables; Physical Properties. Possible Minerals; METALLIC and SUBMETALLIC LUSTER [more properties] HEMATITE, Fe 2 O 3: MAGNETITE, Fe 3 O 4: PYRITE, FeS 2: NON-METALLIC LUSTER (BUT NOT EARTHY) Light Colored: Harder than Glass: Cleavage [more properties] POTASSIUM FELDSPAR, KAlSi 3 O 8: PLAGIOCLASE FELDSPAR, (Na,Ca)(Al,Si) 4More
Each mineral's name is linked to a good photograph and notes to help you confirm the identification. If your mineral has metallic luster, go to my Minerals with Metallic Luster gallery to see the most likely minerals in this group. If your mineral is not one of these, try the sources in the Mineral Identification Guides category.More
(sub)metallic luster, high density, lack of visible cleavage or crystal form, grey streak. Part II . The Geology 2 Mineral List and Distinctive Physical Properties The following list shows the 17 minerals considered important for the purposes of Geology 2. You will need to be able to identify each of these minerals. The minerals areMore
Experts use color all the time, but only because they have had sufficient practice at identifying minerals, and usually know the exceptions for common minerals. If you are a beginner, use color to help identify, but do not depend on it. Color is pretty reliable on opaque and metallic minerals.More
Metallic. As the mineral is turned against the overhead light, we observe a flash described as that from a polished metal surface. We identify this type of reflection as metallic. Non-metallic. As the mineral is turned against the overhead light, we either observe a flash that does not resemble polished metal.More