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Latest Crystallography Stories

2013-10-28 11:35:24

New atomic layer-by-layer InGaN technology offers perfect crystal Did you know that crystals form the basis for the penetrating icy blue glare of car headlights and could be fundamental to the future in solar energy technology? Crystals are at the heart of diodes. Not the kind you might find in quartz, formed naturally, but manufactured to form alloys, such as indium gallium nitride or InGaN. This alloy forms the light emitting region of LEDs, for illumination in the visible range, and...

2013-10-14 23:19:13

Reportbuyer.com just published a new market research report: Global and China Gypsum Board Industry Report, 2012-2013. London (PRWEB) October 14, 2013 Since 2006, China has issued a dozen of laws & regulations and policies on promoting new building materials. As a kind of ideal material to construct green building, the gypsum board can not only maximize housing functions to meet the specific needs for living and working, but also go with the tide of developing green economy. In...

2013-10-02 23:25:35

Recently, UWDress.com, a well-known supplier of women’s dresses, has announced its turquoise bridesmaid dress promotion (http://www.uwdress.com/c/white-bridesmaid-dresses.html). (PRWEB) October 02, 2013 Recently, UWDress.com, a well-known supplier of women’s dresses, has announced its turquoise bridesmaid dress promotion. The discounts are up to 60% off. UWDress commits itself to designing and manufacturing hot and trendy women’s dresses. The company has been developing very fast...

2013-09-30 23:45:42

PureHimalayanSalt.com is now offering a wide selection of pure pink Himalayan salt products online at http://www.purehimalayansalt.com. Wanaque, New Jersey (PRWEB) September 29, 2013 Legend has it that Himalayan salt mines were first discovered by Alexander the Great’s soldiers, who stumbled across the mines in the region that is now northern Pakistan. That mine, which is the second largest salt mine in the world, was discovered to produce salt with curative powers. Wounds healed more...

Caltech Engineers Focus On The Nano To Create Strong, Lightweight Materials
2013-09-06 12:40:12

California Institute of Technology The lightweight skeletons of organisms such as sea sponges display a strength that far exceeds that of manmade products constructed from similar materials. Scientists have long suspected that the difference has to do with the hierarchical architecture of the biological materials—the way the silica-based skeletons are built up from different structural elements, some of which are measured on the scale of billionths of meters, or nanometers. Now engineers...

2013-08-27 23:00:59

HistoryofTurquoise.com takes an in-depth look at the fascinating history of turquoise. (PRWEB) August 27, 2013 The history of turquoise is both a long and storied one. Turquoise has existed in both ancient and modern civilizations, and its history has played an extraordinary role within the world. Now, a new website is shining the spotlight on the origins and incredible history of turquoise. “The Southwestern United States tells a lot about the history of turquoise, and has played an...


Latest Crystallography Reference Libraries

28_9de5c05320ccdc491872fa501c117601
2005-05-26 12:19:41

Amphibole defines an important group of dark-colored rock-forming inosilicate minerals composed of double chain SiO4 tetrahedra linked at the vertices and generally containing ions of iron and/ or magnesium in their structures. In chemical composition and general characteristics they are very similar to the pyroxenes and, like them, fall into three series according to their system of crystallization. The chief difference between amphiboles and pyroxenes is in cleavage: amphiboles form oblique...

28_3f12abda63415a07ee5b6c5d30ef8239
2005-05-26 12:17:18

Aragonite is a polymorph of the mineral calcite, both having the chemical composition CaCO3. Its structure differs from calcite and leads to a different crystal shape, an orthorhombic system with acicular crystals. By repeated twinning pseudo-hexagonal forms result. It may be columnar or fibrous, occasionally in branching stalactitic forms called flos-ferri (flowers of iron) from their association with the ores at the Carthinian iron mines. The type location for aragonite is Molina de...

28_acf3a79763725412768c5ca1b9da5c84
2005-05-26 12:12:27

Aurichalcite is a mineral, usually found as a secondary mineral in copper and zinc deposits. Its chemical formula is (Zn,Cu)5(CO3)2(OH)6. The name probably originates from the Greek oreichalchos meaning "mountain copper".

28_8002f27f8f96dedfc5d591fb18ec14b5
2005-05-26 09:41:33

The mineral kyanite is an aluminium silicate of the sillimanite group (along with andalusite and sillimanite), also called alumino-silicate. It has the formula Al2O3·SiO2 (Al2SiO5). Its hardness varies widely depending on its crystallographic direction, from 5 to 7.5, and it has a specific gravity of 3.56-3.67. It is translucent, usually blue, but possibly white, gray, green, or black. It is usually found in long-bladed crystals or columnar to fibrous structures. Kyanite is used in...

28_2e75b7b4202fc44cb88f662db2bba1fc
2005-05-26 09:37:09

Limonite Limonite is a ferric hydrate of varying composition, the generic formula is frequently written as FeO(OH)·nH2O, although this is not entirely accurate as Limonite often contains a varying amount of oxide compared to hydroxide. Together with hematite, it is mined as ore for the production of iron. Limonite is heavy and yellowish-brown. It is not a true mineral, however, but a mixture of similar hydrated iron oxide minerals, mostly Goethite. Limonite forms mostly in or near...

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Word of the Day
tesla
  • The unit of magnetic flux density in the International System of Units, equal to the magnitude of the magnetic field vector necessary to produce a force of one newton on a charge of one coulomb moving perpendicular to the direction of the magnetic field vector with a velocity of one meter per second. It is equivalent to one weber per square meter.
This word is named for Nikola Tesla, the inventor, engineer, and futurist.