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The melanosome is a dark, mafic mineral band formed in migmatite which is melting into a eutaxitic texture; often, this leads to the formation of granite. The melanosomes form bands with leucosomes , and in that context may be described as schlieren (color banding) or migmatitic .
This is a list of minerals which have Wikipedia articles. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish the various species .
As of November 2024, the IMA - CNMNC List of Minerals lists 6,100 valid minerals, including 1,153 pre-IMA minerals (grandfathered), and 97 questionable minerals. [2] Also as of November 2024 [update] , the Mineralogical Society of America's Handbook of Mineralogy lists 5,663 species, [ 3 ] and the IMA Database of Mineral Properties/RRUFF ...
Animal-derived drugs are a major source of modern medications used around the world. [ 2 ] [ 17 ] The use of these drugs can cause certain animals to become endangered or threatened ; however, it is difficult to identify the animal species used in medicine since animal-derived drugs are often processed, which degrades their DNA .
Mineral deficiency is a lack of the dietary minerals, the micronutrients that are needed for an organism's proper health. [1] The cause may be a poor diet , impaired uptake of the minerals that are consumed, or a dysfunction in the organism's use of the mineral after it is absorbed.
This is a list of gemstones, organized by species and types. Minerals ... Some minerals made into gemstones may display a chatoyancy or cat's eye effect, ...
This is a list of psychiatric medications used by psychiatrists and other physicians to treat mental illness or distress. The list is ordered alphabetically according to the condition or conditions, then by the generic name of each medication. The list is not exhaustive and not all drugs are used regularly in all countries.
Optical properties of common minerals Name Crystal system Indicatrix Optical sign Birefringence Color in plain polars Anorthite: Triclinic: Biaxial (-) 0.013