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List of Minerals (Complete)
Mineralogy is an active science in which minerals are discovered or recognised on a regular basis. Use of old mineral names is also discontinued, for example when a name is no longer considered valid. Therefore, a list of recognised mineral species is never complete. Minerals are distinguished by various chemical and physical properties. Differences in chemical composition and crystal structure distinguish the various species. Within a mineral species there may be variation in physical properties or minor amounts of impurities that are recognized by mineralogists or wider society as a mineral variety. The International Mineralogical Association (IMA) is the international group that recognises new minerals and new mineral names. However, minerals discovered before 1959 did not go through the official naming procedure. Some minerals published previously have been either confirmed or discredited since that date. This list contains a mixture of mineral names that have been approved since 1959 and those mineral names believed to still refer to valid mineral species (these are called "grandfathered" species). Presently, each year about 90-110 new mineral species (the sum of all mutations c. 120/year) are officially approved by the Commission on New Minerals, Nomenclature and Classification (CNMNC) of the International Mineralogical Association. The IMA/CNMNC administrates c. 6,500 names, and (As of January 2018), the Handbook of Mineralogy lists 4,507 species. (As of March 2018), the IMA Database of Mineral Properties/ Rruff Project lists 5,312 valid species (IMA/CNMNC) of a total of 5,525 minerals. There are 1,289 Pre-IMA minerals. (As of April 2011), the Webmineral.com website lists 2,722 published and approved (IMA/CNMNC) minerals, 81 discredited minerals (IMA/CNMNC status; Michael Fleischer discredited around thousand species in his lifetime), 2,691 synonyms and 123 "not approved" names. (As of November 2018), the IMA - CNMNC Master List of Minerals lists 5,413 valid minerals, including c. 1,166 pre-IMA minerals (grandfathered), c. 272 approved minerals but without a published description yet and c. 99 questionable minerals. Due to the length of this list, it is divided into alphabetical groups. The minerals are sorted by name.
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  • 02 Nov 2022
Topic Review
Nanotechnology in Warfare
Nanotechnology in Warfare is a branch of nano-science in which molecular systems are designed, produced and created to fit a nano-scale (1-100nm). The application of such technology, specifically in the area of warfare and defence, has paved the way for future research in the context of weaponisation. Nanotechnology unites a variety of scientific fields including material science, chemistry, physics, biology and engineering. Advancements in this area, have led to categorised development of such nano-weapons with classifications varying from; small robotic machines, hyper-reactive explosives, and electromagnetic super-materials. With this technological growth, has emerged implications of associated risks and repercussions, as well as regulation to combat these effects. These impacts give rise to issues concerning global security, safety of society, and the environment. Legislation may need to be constantly monitored to keep up with the dynamic growth and development of nano-science, due to the potential benefits or dangers of its use. Anticipation of such impacts through regulation, would 'prevent irreversible damages' of implementing defence related nanotechnology in warfare.
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  • 02 Nov 2022
Topic Review
After Dark
After Dark is a series of computer screensaver software introduced by Berkeley Systems in 1989 for the Apple Macintosh, and in 1991 for Microsoft Windows. Following the original, additional editions included More After Dark, Before Dark, and editions themed around licensed properties such as Star Trek, The Simpsons, Looney Tunes, Marvel, and Disney characters. On top of the included animated screensavers, the program allowed for the development and use of third-party modules, many hundreds of which were created at the height of its popularity.
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  • 02 Nov 2022
Topic Review
Bücker Bü 131
The Bücker Bü 131 "Jungmann" (freshman, young man) was a German 1930s basic training aircraft which was used by the Luftwaffe during World War II.
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  • 03 Nov 2022
Topic Review
List of Space Shuttle Landing Sites
Three locations in the United States were used as landing sites for the Space Shuttle system. Each site included runways of sufficient length to provide adequate distance for the slowing-down of a returning spacecraft. The prime landing site was the Shuttle Landing Facility at the Kennedy Space Center in Florida, a purpose-built landing strip. Landings also occurred at Edwards Air Force Base in California, and one took place at White Sands Space Harbor in New Mexico. No space shuttle landed on a dry lakebed runway after 1991. The first international site was Cartago, Valle in Colombia (CTA). Various international landing sites were also available in the event of a Transoceanic Abort Landing (TAL) scenario, as well as other sites in the United States and Canada in case of an East Coast Abort Landing (ECAL) situation. Space shuttle landings were intended to regularly take place at Vandenberg Air Force Base in California for Department of Defense missions launched from the site, but none occurred due to the cancellation of all launches from Vandenberg.
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  • 02 Nov 2022
Topic Review
Information Technology
Information technology (IT) is the use of computers to create, process, store, retrieve, and exchange all kinds of data and information. IT is typically used within the context of business operations as opposed to personal or entertainment technologies. IT forms part of information and communications technology (ICT). An information technology system (IT system) is generally an information system, a communications system, or, more specifically speaking, a computer system — including all hardware, software, and peripheral equipment — operated by a limited group of IT users. Although humans have been storing, retrieving, manipulating, and communicating information since the earliest writing systems were developed, the term information technology in its modern sense first appeared in a 1958 article published in the Harvard Business Review; authors Harold J. Leavitt and Thomas L. Whisler commented that "the new technology does not yet have a single established name. We shall call it information technology (IT)." Their definition consists of three categories: techniques for processing, the application of statistical and mathematical methods to decision-making, and the simulation of higher-order thinking through computer programs. The term is commonly used as a synonym for computers and computer networks, but it also encompasses other information distribution technologies such as television and telephones. Several products or services within an economy are associated with information technology, including computer hardware, software, electronics, semiconductors, internet, telecom equipment, and e-commerce.[lower-alpha 1] Based on the storage and processing technologies employed, it is possible to distinguish four distinct phases of IT development: pre-mechanical (3000 BC — 1450 AD), mechanical (1450—1840), electromechanical (1840—1940), and electronic (1940 to present). This article focuses on the most recent period (electronic). Information technology is also a branch of computer science, which can be defined as the overall study of procedure, structure, and the processing of various types of data. As this field continues to evolve across the world, the overall priority and importance has also grown, which is where we begin to see the introduction of computer science-related courses in K-12 education. However, concerns have been raised about this fact that most schools are lacking advanced-placement courses in this field.
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  • 02 Nov 2022
Topic Review
Juncal Formation
The Juncal Formation (also Juncal Shale) (/ˈdʒʊŋkɑːl, ˈhuːŋ/) is a prominent sedimentary geologic unit of Eocene age found in and north of the Santa Ynez Mountain range in southern and central Santa Barbara County and central Ventura County, California. An enormously thick series of sediments deposited over millions of years in environments ranging from nearshore to deep water, it makes up much of the crest of the Santa Ynez range north of Montecito, as well as portions of the San Rafael Mountains in the interior of the county. Its softer shales weather to saddles and swales, supporting a dense growth of brush, and its sandstones form prominent outcrops.
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  • 02 Nov 2022
Topic Review
Chiapas Highlands
The Chiapas highlands or the central highlands of Chiapas (Spanish: Los Altos de Chiapas), is a geographic, sociocultural and administrative region located in Chiapas, the southernmost state of Mexico.
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  • 02 Nov 2022
Topic Review
Sanism
Mentalism or sanism describes discrimination and oppression against a mental trait or condition a person has, or is judged to have. This discrimination may or may not be characterized in terms of mental disorder or cognitive impairment. The discrimination is based on numerous factors such as stereotypes about neurodivergence, for example autism, learning disorders, ADHD, bipolar, schizophrenia, and personality disorders, specific behavioral phenomena such as stuttering and tics, or intellectual disability. Like other forms of discrimination such as sexism and racism, mentalism involves multiple intersecting forms of oppression, complex social inequalities and imbalances of power. It can result in covert discrimination by multiple, small insults and indignities. It is characterized by judgments of another person's perceived mental health status. These judgments are followed by actions such as blatant, overt discrimination which may include refusal of service, or the denial of human rights. Mentalism impacts how individuals are treated by the general public, by mental health professionals, and by institutions, including the legal system. The negative attitudes involved may also be internalized. The terms mentalism, from "mental", and sanism, from "sane", have become established in some contexts, though concepts such as social stigma, and in some cases ableism, may be used in similar but not identical ways. While mentalism and sanism are used interchangeably, sanism is becoming predominant in certain circles, such as academics, those who identify as mad and mad advocates and in a socio-political context where sanism is gaining ground as a movement. The movement of sanism is an act of resistance among those who identify as mad, consumer survivors, and mental health advocates. In academia evidence of this movement can be found in the number of recent publications about sanism and social work practice. Mentalism tends to be referred as mental disability, distinguishing itself from ableism, which refers to physical disability.
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  • 02 Nov 2022
Topic Review
Personal Independence Payment
Personal Independence Payment (abbreviated to PIP and usually pronounced as one word) is a welfare benefit in the United Kingdom that is intended to help adults with the extra costs of living with a long-term health condition or a disability. It is non-means-tested, non-contributory and tax-free; it is not linked to a person's ability to work and it is available equally to people in or out of work. It is not intended to be a substitute for a person's earnings, unlike Employment and Support Allowance (ESA) or ESA's predecessor, Incapacity Benefit. Eligibility for PIP is based upon the practical effects of a condition on a person's life, rather than the condition itself. It is not currently available to children who still claim Disability Living Allowance and are invited to claim PIP from their 16th birthday; it can be claimed by adults under the State Pension age, and people already on the benefit will continue to receive it after they retire. PIP and the benefit it replaces are predominantly received by older people, because increasing age is the main risk factor for developing disabling diseases.
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