·A mineral is a natural inorganic solid with a defined chemical composition and crystal structure In geology a mineral is a naturally occurring solid that has a well defined chemical composition and crystal structure Most minerals are inorganic although some mineralogists allow for minerals that are organic compounds or else made by organisms rather
Mineral crystals have shapes related to the arrangements of atoms within them We typically use physical properties such as luster color diaphaneity crystal shape streak hardness and cleavage to identify and distinguish different minerals Other properties including magnetism and reaction to hydrochloric acid are sometimes diagnostic
tpo61 Physical Properties of Minerals （）。 ® ® GRE ®
2 ·Chemical Properties of Minerals Chemical properties of minerals are characteristics that describe how a mineral interacts with other substances its composition and its internal structure These properties often involve changes to the mineral s chemical structure such as during chemical reactions or decomposition Here are some key chemical
Elasticity of solids is the property that restores their form after deformation The elastic properties of minerals and rocks are widely utilized in geophysics and geochemistry to interpret information on the interior of the Earth and other planets; these properties are indispensable in solid state physics for constructing the acoustic branch of vibrational spectra and equation of state and
An internally consistent set of standard state and mixing properties has been derived for olivine orthopyroxene garnet cordierite and ilmenite in the system FeO MgO CaO Al2O3 TiO2 SiO2 H2O from analysis of relevant phase equilibrium and thermophysical data Solubility of Al2O3 in orthopyroxene is accounted for in addition to Fe Mg mixing Added confidence in the retrieved
·2 Colour Colour is a primary observation when examining minerals and it can be consistent or variable Minerals with a characteristic and constant colour are termed idiochromatic while those that display various colours due to impurities or structural abnormalities are example magnetite and chromite look very similar but can be
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