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In mineralogy, an inclusion is any material trapped inside a mineral during its formation. In gemology , it is an object enclosed within a gemstone or reaching its surface from the interior. [ 1 ] According to James Hutton 's law of inclusions, fragments included in a host rock are older than the host rock itself.
Hydrothermal ore minerals, which typically form from high temperature aqueous solutions, trap tiny bubbles of liquids or gases when cooling and forming solid rock. The trapped fluid in an inclusion preserves a record of the composition, temperature and pressure of the mineralizing environment. [1] An inclusion often contains two or more phases ...
The black arrow points to one good example, but there are several others. The occurrence of multiple inclusions within a single crystal is relatively common. A melt inclusion is a small parcel or "blobs" of melt(s) that is entrapped by crystals growing [1] in magma and eventually forming igneous rocks.
Examples showing the imposition of the host diamond's morphology on the included mineral in syngenetic inclusions. (a) Inclusion of olivine in diamond with their faces imposed by octahedral (o) and cubic (c) shapes common in diamond. (b) Diamond with several olivine inclusions with faces parallel to the octahedral diamond face.
Contributions to Mineralogy and Petrology is a peer-reviewed scientific journal published by Springer Science+Business Media since 1947. The journal is a hybrid open-access journal . The journal covers the fields of igneous and metamorphic petrology , geochemistry , and mineralogy .
The mineral is the inorganic component of mineralized tissues. This constituent is what makes the tissues harder and stiffer. [1] [2] Hydroxyapatite, calcium carbonate, silica, calcium oxalate, whitlockite, and monosodium urate are examples of minerals found in biological tissues.
A calcium–aluminium-rich inclusion or Ca–Al-rich inclusion (CAI) is a submillimeter- to centimeter-sized light-colored calcium- and aluminium-rich inclusion found in carbonaceous chondrite meteorites. The four CAIs that have been dated using the Pb-Pb chronometer yield a weighted mean age of 4567.30 ± 0.16 Myr.
Howell-Jolly body-like inclusions (HJBLi) are a hematopathological finding of an inclusion arising from detached DNA nuclear fragment in white blood cells caused by dysplastic granulopoiesis. [1] The inclusion is aptly named for its similar appearance of the Howell–Jolly body in erythrocytes. [2] The term was coined in 1989. [2]