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How do Geologists identify minerals?

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Even geologists can have a difficult time identifying minerals. There are over 4,000 known minerals, and approximately 80-100 new ones are discovered each year. Of all these, only a few hundred are considered common. To help with identification, geologists must look closely at the physical properties of a mineral. read more

Even geologists can have a difficult time identifying minerals. There are over 4,000 known minerals, and approximately 80-100 new ones are discovered each year. Of all these, only a few hundred are considered common. read more

Reflected light is used to identify opaque minerals. The frequency of occurrence of the different mineral kinds or types can be tabulated by point counting the thin section. This way, the specific type and proportion of minerals making up the rock can be determined. read more

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