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Latest Mineralogy Stories

2014-04-28 23:04:32

Sarine Technologies is offering the innovative Sarine Loupe™ solution, following successful trials in India and the US.

2014-02-13 23:29:30

Wholesaler of rocks, minerals, healing crystals, gemstones and jewelry Stonebridge Imports (SBI) of Kitchener, ON announces the launch of new website with updated, easily-accessible platform for

2014-02-05 16:23:48

DUBLIN, February 5, 2014 /PRNewswire/ -- Research and Markets ( http://www.researchandmarkets.com/research/sn6c92/alumina_zirconia) has announced the addition of the "Alumina

2014-01-29 23:27:10

Emerging as a leading e-commerce trade platform for abrasives only, currently iAbrasive releases news that super-hard abrasives have been widely applied in oil exploration. Zhengzhou,

2014-01-29 20:21:47

DUBLIN, January 30, 2014 /PRNewswire/ -- Research and Markets (http://www.researchandmarkets.com/research/sf5n6v/abrasives) has announced the addition of Dedalus Consulting

What Wax and TV have in common
2014-01-14 12:24:55

Paraffin wax and an LCD television have a lot more in common than you might think, according to a new study.

2013-12-31 23:24:34

The year ends strong for most jewelers with record sales increases over the holiday season. New York, New York (PRWEB) December 31, 2013 Although a number

Scientists Use Computers And Experiments To Better Predict Chemical Dissolution
2013-12-06 12:53:32

Scientists from Rice University and the University of Bremen's Center for Marine Environmental Sciences (MARUM) in Germany have combined cutting-edge experimental techniques and computer simulations to find a new way of predicting how water dissolves crystalline structures like those found in natural stone and cement.


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
sudarium
  • A handkerchief.
  • Specifically— The legendary sweat-cloth; the handkerchief of St. Veronica, according to tradition miraculously impressed with the mask of Christ; also, the napkin about Christ's head (Johu xx. 7).
  • In general, any miraculous portrait of Christ.
The word 'sudarium' comes from a Latin word meaning 'a handkerchief'.