An index mineral is used in geology to determine the degree of metamorphism a rock has experienced.
Mineral Wells Index was created on 1900-05-05.
An index mineral is used in geology to determine the degree of metamorphism a rock has experienced.
calcite
forms only in a sedimentary rock
kyanite and sillimanite
forms only in a sedimentary rock
Sillimanite is an index mineral for high temperature and variable pressure metamorphism.
Connie Manson has written: 'Planning for housing in Wyoming' -- subject(s): Housing policy, Bibliography 'Index to geologic and geophysical mapping of Washington, 1899-1983' -- subject(s): Maps, Bibliography, Geology, Geophysics, Catalogs 'Index to geologic and geophysical mapping of Washington' -- subject(s): Maps, Catalogs, Geology 'Bibliography and index of the geology and mineral resources of Washington, 1986-1990' -- subject(s): Mines and mineral resources, Geology, Bibliography, Indexes 'Digital bibliography of the geology and mineral resources of Washington State' -- subject(s): Bibliography, Mines and mineral resources, Geology 'Preliminary bibliography and index of the geology and mineral resources of Washington, 1986-1989' -- subject(s): Mines and mineral resources, Geology, Bibliography, Indexes 'Bibliography and index of the geology and mineral resources of Washington, 1993' -- subject(s): Bibliography, Mines and mineral resources, Geology
The Becke line effect is a phenomenon in optical mineralogy where a halo of light appears around a mineral grain when immersed in a liquid with a different refractive index. It is used to determine the relative refractive index of the mineral compared to the liquid.
Use the definition of "index of refraction". In this case, you simply need to divide the speed of light in a vacuum by the index of refraction.
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Max H. Hey has written: 'Appendix to the second edition of An index of mineral species and varieties arranged chemically' -- subject(s): Catalogs and collections, Mineralogy 'An index of mineral species & varieties arranged chemically. Appendix' -- subject(s): Catalogs and collections, Minerals 'A second appendix to the second edition of An index of mineral species and varieties arranged chemically' -- subject(s): Mineralogy, Nomenclature