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Also called Indianite. A mineral from the lime-rich end of the plagioclase group of minerals. Anorthites are usually silicates of calcium and aluminium occurring in some basic igneous rocks, typically those produced by the contact metamorphism of impure calcareous sediments. anticline An arched fold in which the layers usually dip away from the fold axis. Contrast syncline. aphanic Having the ...
Skinner's (2005) definition of a mineral takes this matter into account by stating that a mineral can be crystalline or amorphous. [21] Although biominerals are not the most common form of minerals, [31] they help to define the limits of what constitutes a mineral proper. Nickel's (1995) formal definition explicitly mentioned crystallinity as a ...
Notes Works cited References External links 0-9 S.S. Kresge Lunch Counter and Soda Fountain, about 1920 86 Main article: 86 1. Soda-counter term meaning an item was no longer available 2. "Eighty-six" means to discard, eliminate, or deny service A abe's cabe 1. Five dollar bill 2. See fin, a fiver, half a sawbuck absent treatment Engaging in dance with a cautious partner ab-so-lute-ly ...
Urban Dictionary is a crowdsourced English-language online dictionary for slang words and phrases. The website was founded in 1999 by Aaron Peckham. Originally, Urban Dictionary was intended as a dictionary of slang or cultural words and phrases, not typically found in standard English dictionaries, but it is now used to define any word, event, or phrase (including sexually explicit content).
However, generally speaking, soft minerals are not typically used as gemstones by virtue of their brittleness and lack of durability. [ 7 ] Found all over the world, the industry of coloured gemstones (i.e. anything other than diamonds) is currently estimated at US$1.55 billion as of 2023 [update] and is projected to steadily increase to a ...
Mineralogy applies principles of chemistry, geology, physics and materials science to the study of minerals. Mineralogy [n 1] is a subject of geology specializing in the scientific study of the chemistry, crystal structure, and physical (including optical) properties of minerals and mineralized artifacts.
A slang is a vocabulary (words, phrases, and linguistic usages) of an informal register, common in everyday conversation but avoided in formal writing and speech. [1] It also often refers to the language exclusively used by the members of particular in-groups in order to establish group identity, exclude outsiders, or both.
The term caliche is borrowed from Spanish and is originally from the Latin word calx, meaning lime. [1] Caliche is generally light-colored but can range from white to light pink to reddish-brown, depending on the minerals present. Caliche is a mark of older landscapes. It generally occurs on or very near the surface.