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Latest Mineralogy Stories

2013-06-25 23:23:32

Gem-A (The Gemmological Association of Great Britain) has announced it will be relocating to a brand-new 5 million dollar Hatton Garden office as part of its centennial celebrations. New York, NY (PRWEB) June 25, 2013 As of June this year, Gem-A will move closer to London’s famous Hatton Garden with a brand-new headquarters in Holborn’s historical Ely Place. Constructed in 1772 by Robert Taylor, Ely Place was once the London residence of the Bishops of Ely and is home to St....

2013-05-31 23:27:44

Walker Metalsmiths Celtic Jewelers are using research and networking to seek heirs to airliner crash victims. The recent discovery of a similar gold cross pendant may offer ethnic and religious clues to the owner. Miami, FL (PRWEB) May 31, 2013 Walker Metalsmiths, a western New York State jewelry firm, is using their resources and expertise to try to solve a mystery. The story of Mark Rubenstein´s remarkable discovery of a partially melted gold cross medallion in the Everglades brings...

Tiny Test Tube Crystal Flowers
2013-05-17 08:31:39

April Flowers for redOrbit.com - Your Universe Online With spring come thoughts of green growing plants and beautiful flowers — Mother Nature showing off her finest. Wim L. Noorduin, a postdoctoral fellow at the Harvard School of Engineering and Applied Sciences (SEAS), has been showing off his finest as well, growing delicate flower structures on the scale of microns in a beaker full of chemical fluid. Noorduin´s miniscule sculptures are curved and delicate, not resembling...

Theory Of The Formation Of Crystals Is Complete Again
2013-02-19 14:21:47

Eindhoven University of Technology Exactly how a crystal forms from solution is a problem that has occupied scientists for decades. Researchers at Eindhoven University of Technology (TU/e), together with researchers from Germany and the USA, are now presenting the missing piece. This classical theory of crystal formation, which occurs widely in nature and in the chemical industry, was under fire for some years, but is saved now. The team made this breakthrough by a detailed study of the...

2012-12-24 05:01:46

Luriya.com, #1 gold buyers in NYC and place to sell diamonds has announced a few of the best ways to sell gemstones. New York (PRWEB) December 23, 2012 Luriya.com, #1 gold buyers in NYC and place to sell diamonds has announced a few of the best ways to sell gemstones. Selling and buying precious metals and gemstones have never been so easy, it is something that cannot be learnt in a single day, and it requires guidance, knowledge and experience. Luriya.com is that expert who can help...


Latest Mineralogy 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_9c404ab9a4754b403781670c9e631915
2005-05-26 11:59:32

he mineral calcite is a calcium carbonate corresponding to the formula CaCO3 and is one of the most widely distributed minerals on the Earth's surface. It is a common constituent of sedimentary rocks, limestone in particular. It is also the primary mineral in metamorphic marble. It also occurs as a vein mineral in deposits from hot springs, and also occurs in caverns as stalactites and stalagmites. Calcite is often the primary constituent of the shells of marine organisms (e.g. plankton,...

28_d2c55a2f2b1619323d50ee8c6db10bb5
2005-05-26 11:56:59

Celestite (SrSO4) is a mineral consisting of strontium sulfate. The mineral is also known as celestine and is named for its occasional delicate blue color. Celestite occurs as crystals, and also in compact massive and fibrous forms. It is mostly found in sedimentary rocks, often associated with the minerals gypsum, anhydrite, and halite. The mineral is found worldwide, usually in small quantities. Pale blue crystal specimens are found in Madagascar.

28_5f496c15049ba89cd8c43810810e311e
2005-05-26 11:32:33

Chalcocite, copper(I) sulfide (Cu2S), is an important copper mineral ore. It is opaque, being colored dark-gray to black with a metallic luster. It has a hardness of 2½ - 3. It is a sulfide with an orthorhombic crystal system. Chalcocite is sometimes found as a primary vein mineral in hydrothermal veins. However, most chalcocite occurs in the supergene enriched environment below the oxidation zone of copper deposits as a result of the leaching of copper from the oxidized minerals. It is...

28_56635877b282726a86b25cf3e98722c2
2005-05-26 11:30:45

Chert is a fine-grained silica-rich cryptocrystalline sedimentary rock that may contain small fossils. It varies greatly in color from white to black, but most often manifests as gray, brown, grayish brown and light green to rusty red; its color is an expression of trace elements present in the rock, and both red and green are most often related to traces of iron (in its oxidized and reduced forms respectively). It outcrops as nodules in limestone, chalk, and dolostone formations as a...

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Word of the Day
snash
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.