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list of minerals | A Wisdom Archive on list of minerals | | list of minerals A selection of articles related to list of minerals | |
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List of minerals
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| ARTICLES RELATED TO list of minerals | | | |  list of minerals: Encyclopedia II - Desert - List of deserts
Desert - Americas.
Atacama desert in Chile
Mojave, Great Basin, Sonoran, and Chihuahuan
See also: List of North American deserts
Desert - Africa.
Libyan
Kalahari
Sahara
Namib
Desert - Asia-Pacific.
Dasht-e Kavir, central Iran.
Gobi desert of Mongolia; Taklamakan desert in China.
Kara Kum deserts in Central Asia.
Thar-Cholistan desert i ...
See also:Desert, Desert - Types of desert, Desert - Montane deserts, Desert - Desert features, Desert - Soils, Desert - Vegetation, Desert - Water, Desert - Mineral resources, Desert - List of deserts, Desert - Americas, Desert - Africa, Desert - Asia-Pacific, Desert - Other Read more here: » Desert: Encyclopedia II - Desert - List of deserts |
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| | | | | list of minerals: Encyclopedia II - Amethyst - Amethyst in folklore and astrology Amethyst is the birthstone associated with February. It is also associated with the constellations of Pisces, Aries (especially the violet and purple variety), Aquarius, and Sagittarius. It is a symbol of heavenly understanding, and of the pioneer in thought and action on the philosophical, religious, spiritual and material planes.
Linked with Saint Valentine, tradition maintains that amethyst assists those who wear it in maintaining their faithfulness, causing peace and calmness of mind. It was often carried by soldiers on the shafts ...
See also:Amethyst, Amethyst - Value, Amethyst - Amethyst in folklore and astrology Read more here: » Amethyst: Encyclopedia II - Amethyst - Amethyst in folklore and astrology |
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| | | | | | | | | list of minerals: Encyclopedia II - Alabaster - Calcite Alabaster This substance, the "alabaster" of the Bible, is often termed Oriental alabaster, since the early examples came from the Far East. The Greek name alabastrites is said to be derived from the town of Alabastron, in Egypt, where the stone was quarried, but the locality probably owed its name to the mineral; the origin of the mineral-name is obscure, and it has been suggested that it may have had an Arabic origin. This "Oriental" alabaster was highly esteemed for making small perfume-bottles or ointment vases called alabastra, and ...
See also:Alabaster, Alabaster - Calcite Alabaster, Alabaster - Gypsum Alabaster Read more here: » Alabaster: Encyclopedia II - Alabaster - Calcite Alabaster |
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| | | | | list of minerals: Encyclopedia II - Desert - Desert features Sand covers only about 20 percent of Earth's deserts. Most of the sand is in sand sheets and sand seas—vast regions of undulating dunes resembling ocean waves "frozen" in an instant of time. In general, there are 6 forms of deserts:
i.Mountain and basin deserts;
ii. Hamada deserts, which comprise of a plateaux landforms;
iii. Regs which consist of rock pavements;
iv. Ergs which are formed by sand seas;
v. Intermontane Basins; and
vi. Badlands which are located at the margins of arid ...
See also:Desert, Desert - Types of desert, Desert - Montane deserts, Desert - Desert features, Desert - Soils, Desert - Vegetation, Desert - Water, Desert - Mineral resources, Desert - List of deserts, Desert - Americas, Desert - Africa, Desert - Asia-Pacific, Desert - Other Read more here: » Desert: Encyclopedia II - Desert - Desert features |
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| | | | | list of minerals: Encyclopedia II - Desert - Desert features Sand covers only about 20 percent of Earth's deserts. Most of the sand is in sand sheets and sand seas—vast regions of undulating dunes resembling ocean waves "frozen" in an instant of time. In general, there are 6 forms of deserts:
Mountain and basin deserts;
Hamada deserts, which comprise of a plateaux landforms;
Regs which consist of rock pavements;
Ergs which are formed by sand seas;
Intermontane Basins; and
Badlands which are located at the margins of arid ...
See also:Desert, Desert - Types of desert, Desert - Montane deserts, Desert - Desert features, Desert - Soils, Desert - Vegetation, Desert - Water, Desert - Mineral resources, Desert - List of deserts, Desert - Americas, Desert - Africa, Desert - Asia-Pacific, Desert - Other Read more here: » Desert: Encyclopedia II - Desert - Desert features |
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| | | | | | | list of minerals: Encyclopedia II - Calcite - Properties Calcite crystals are hexagonal-rhombohedral, though actual calcite rhombohedrons are rare as natural crystals. However, they show a remarkable variety of habit including acute to obtuse rhombohedrons, tabular forms, prisms, or various scalenohedrons. Calcite exhibits several twinning types adding to the variety of observed forms. It may occur as fibrous, granular, lamellar, or compact. Cleavage is usually in three directions parallel to the rhombohedron form. Its fracture is conchoidal, but difficult to obtain. It has a Mohs hardness of 3, a ...
See also:Calcite, Calcite - Properties, Calcite - External link Read more here: » Calcite: Encyclopedia II - Calcite - Properties |
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| | | | | list of minerals: Encyclopedia II - Agate - Formation and characteristics Most agates occur as nodules in eruptive rocks or ancient lavas where they represent cavities originally produced by the disengagement of vapour in the molten mass which were then filled, wholly or partially, by siliceous matter deposited in regular layers upon the walls. Such agates, when cut transversely, exhibit a succession of parallel lines, often of extreme tenuity, giving a banded appearance to the section. Such stones are ...
See also:Agate, Agate - Formation and characteristics, Agate - Types of agate, Agate - Agate beliefs, Agate - Reference Read more here: » Agate: Encyclopedia II - Agate - Formation and characteristics |
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| | | | | | list of minerals: Encyclopedia II - Beryl - Deposits Beryl is found most commonly in granitic pegmatites, but also occurs in mica schists in the Ural Mountains and is often associated with tin and tungsten orebodies. Beryl is found in Europe in Austria, Germany, and Ireland. Beryl occurs in Madagascar (especially morganite).
The most famous source of emeralds in the world is at Muso and Chivor, Boyacá, Colombia, where they make a unique appearance in limestone. Emeralds are also found in the Transvaal, South Africa, Minas Gerais, Brazil, and near Mursinka in Urals. In the United States ...
See also:Beryl, Beryl - Varieties, Beryl - Deposits, Beryl - Applications Read more here: » Beryl: Encyclopedia II - Beryl - Deposits |
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| | | | | | | list of minerals: Encyclopedia II - Sapphire - Sapphire gems Sapphire is any gemstone-quality corundum. (The red variety of corundum is also known as ruby.)
When color is not specified, sapphire refers to the blue variety. Pink, yellow, green, white, and parti-color (multi-colored) sapphires are often valued less than the blue variety of the same quality and size. However a pink-orange sapphire, called a padparadsha, is highly prized. They were found in many countries especially in Asia such as India, S ...
See also:Sapphire, Sapphire - Sapphire gems, Sapphire - Synthetic sapphire for non-gemstone applications Read more here: » Sapphire: Encyclopedia II - Sapphire - Sapphire gems |
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| | | | | list of minerals: Encyclopedia II - Desert - Types of desert Most classifications rely on some combination of the number of days of rainfall, the total amount of annual rainfall, temperature, humidity, or other factors. In 1953, Peveril Meigs divided desert regions on Earth into three categories according to the amount of precipitation they received. In this now widely accepted system, extremely arid lands have at least 12 consecutive months without rainfall, arid lands have less than 250 millimeters of annual rainfall, and semiarid lands have a mean annual precipitation of between 250 and 500 millimeters. Arid and extremely arid land are deserts, and semiarid grassl ...
See also:Desert, Desert - Types of desert, Desert - Montane deserts, Desert - Desert features, Desert - Soils, Desert - Vegetation, Desert - Water, Desert - Mineral resources, Desert - List of deserts, Desert - Americas, Desert - Africa, Desert - Asia-Pacific, Desert - Other Read more here: » Desert: Encyclopedia II - Desert - Types of desert |
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| | | | | list of minerals: Encyclopedia II - Metamorphic rock - Metamorphic Minerals Metamorphic minerals are those that form only at the high temperatures and pressures associated with the process of metamorphism. These minerals include kyanite, staurolite, sillimanite, andalusite, and some garnets.
Other minerals, such as olivines, pyroxenes, amphiboles, micas, feldspars, and quartz, may be found in metamorphic rocks, but are not necessarily the result of the process of metamorphism. These minerals formed during the crystallization of igneous rocks. They are stable at high temperatures and pressures and may remain c ...
See also:Metamorphic rock, Metamorphic rock - Metamorphic Minerals, Metamorphic rock - Foliation, Metamorphic rock - Types of Metamorphism, Metamorphic rock - Metamorphic rock textures Read more here: » Metamorphic rock: Encyclopedia II - Metamorphic rock - Metamorphic Minerals |
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| | | | | list of minerals: Encyclopedia II - Metamorphic rock - Foliation The layering within metamorphic rocks is called foliation (derived from the Latin word folia, meaning "leaves"), and it occurs when a strong compressive force is applied from one direction to a recrystallizing rock. This causes the platy or elongated crystals of minerals, such as mica and chlorite, to grow with their long axes perpendicular to the direction of the force. This results in a banded, or foliated, rock, with the bands showing ...
See also:Metamorphic rock, Metamorphic rock - Metamorphic Minerals, Metamorphic rock - Foliation, Metamorphic rock - Types of Metamorphism, Metamorphic rock - Metamorphic rock textures Read more here: » Metamorphic rock: Encyclopedia II - Metamorphic rock - Foliation |
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| | | | | list of minerals: Encyclopedia II - Agate - Agate beliefs In Islam, agates are deemed to be very precious stones. According to tradition, the wearer of an agate ring, for example, is believed to be protected from various mishaps and will enjoy longevity, among other benefits. In other traditions agate is believed to cure the stings of scorpions and the bites of snakes, soothe the mind, prevent contagion, still thunder and lightning, promote eloquence, secure the favour of the powerful, and bring victory over enemies. Persian magi are also known to have prized agate rings in their work and beliefs.
The Shia Book of collected prayers, Mafatih Al-janan, quotes the fifth Shia saint Ima ...
See also:Agate, Agate - Formation and characteristics, Agate - Types of agate, Agate - Agate beliefs, Agate - Reference Read more here: » Agate: Encyclopedia II - Agate - Agate beliefs |
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