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Latest Limestone Stories

6b604c1311781263aa087c385655aae7
2010-07-15 06:35:00

Which came first: the chicken or the egg? It is an age old question that has spurred on many a debate, but now a group of scientists might actually be close to having an answer. Using cutting-edge technology, researchers from the Universities of Sheffield and Warwick in England believe that they have discovered the answer by studying eggshells. Scientists had long theorized that a chicken protein known as ovocledidin-17 (OC-17) played a crucial role in the formation of an egg's shell, but...

2010-06-09 09:30:00

DETROIT, June 9 /PRNewswire/ -- A ready-mix produces strong silicate-rock like that making up over 55 percent of the Earth's crust. Unlike nature's own, the artificial rock is made without heat or pressure. It is simply poured, stirred and left to cure. It passes for real rock under microscopic investigation. When mixed with rock aggregates, it forms rock-concrete that has fooled geologists. The technology that can change the landscape of tomorrow's cities is an ancient lost art...

2010-05-10 08:15:00

RENO, NV, May 10 /PRNewswire-FirstCall/ - Infrastructure Materials Corp. (NASDAQ OTC-BB: Symbol IFAM) (the "Company") is pleased to announce the acquisition of mineral exploration rights for two projects in the state of Arizona, the Blye Canyon Project and the Tres Alamos Project. These projects offer a promising foothold into the Arizona and Nevada cement markets. The Blye Canyon Project includes mineral exploration permits on 3.5 sections of land totalling 2227 acres located 23 miles west...

2010-04-28 15:43:00

Plants Commended for Benefiting Local Communities, Global Environment SKOKIE, Ill., April 28 /PRNewswire-USNewswire/ -- Six cement plants received special recognition for their commitment to improving the environment and their communities at the Ninth Annual Cement Industry Environment and Energy Awards, presented by Portland Cement Association (PCA) and Cement Americas magazine at PCA's Spring Meeting in Chicago, April 27, 2010. The awards honor individual cement facilities that...

2010-04-27 07:00:00

HOUSTON, April 27 /PRNewswire-FirstCall/ -- Natural Resource Partners L.P. (NYSE: NRP) announced today that it has closed three acquisitions in the aggregates sector. The combined investment for NRP on all three transactions will be approximately $31 million, $21 million of which was paid at closing and $10 million of which is anticipated to be funded later in 2010. A portion of the proceeds from the recent equity offering were used to fund the transactions. "Including the previously...

2010-04-19 08:15:00

RENO, NV, April 19 /PRNewswire-FirstCall/ - Infrastructure Materials Corp. (NASDAQ OTC-BB: Symbol IFAM) (the "Company") is pleased to announce the assay results from Phase III of its drill program completed on the Blue Nose Limestone Project. The Blue Nose Project consists of 301 mineral claims covering over 6,000 acres located 90 miles northeast of Las Vegas, Nevada in Lincoln County. Management is very pleased with the results of Phase III, consisting of six drill holes with several of the...

2010-03-08 12:47:48

Scientists have made synthetic "Ëœsea shells' from a mixture of chalk and polystyrene cups "“ and produced a tough new material that could make our homes and offices more durable. A team of materials scientists and chemists have taken inspiration from sea shells found on the beach to create a composite material from dissimilar "Ëœingredients'. Their technique could be used to make ceramics with high resistance to cracking "“ which could in turn be used in...

0bdff2564fc7c2df71def1dbb97778de
2010-02-05 13:56:54

The chemical composition of our oceans is not constant but has varied significantly over geological time. In a study published this week in Science, researchers describe a novel method for reconstructing past ocean chemistry using calcium carbonate veins that precipitate from seawater-derived fluids in rocks beneath the seafloor. The research was led by scientists from the University of Southampton's School of Ocean and Earth Science (SOES) hosted at the National Oceanography Centre,...

78af923dc2ae1e6605eddd8b9bbd86a21
2010-01-21 10:09:10

Ice Age climate records from an Arizona stalagmite link the Southwest's winter precipitation to temperatures in the North Atlantic, according to new research. The finding is the first to document that the abrupt changes in Ice Age climate known from Greenland also occurred in the southwestern U.S., said co-author Julia E. Cole of the University of Arizona in Tucson. "It's a new picture of the climate in the Southwest during the last Ice Age," said Cole, a UA professor of geosciences. "When it...

2009-12-08 12:40:00

NEW YORK, Dec. 8 /PRNewswire/ -- Reportlinker.com announces that a new market research report is available in its catalogue: Calcium Carbonate - A Global Market Report http://www.reportlinker.com/p0164401/Calcium-Carbonate---A-Global-Market-Report.html Calcium carbonate is primarily used in the paper industry. The material is also extensively used in paint, plastic and rubber industries for enhanced product quality and cost reduction. Strong and continued growth is forecast in the global...


Latest Limestone Reference Libraries

Carlsbad Caverns National Park
2013-04-17 15:30:34

Carlsbad Caverns National Park is located in southeastern New Mexico in the United States. The park holds 46,766 acres of land, of which 2/3 is a designated wilderness, and is thought to have been discovered by Jim White, who entered the Carlsbad Caverns and named many of the areas within the caverns, including Queens Chamber, New Mexico Room, Green Lake Room, Giant Dome, Witch's Finger, and Bottomless Pit. President Calvin Coolidge established the area as a national monument in 1923, but it...

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_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_a3b402afde54eeee86bc53e0e9a360b3
2005-05-26 11:01:09

Dolomite is a mineral (formula CaMg(CO3)2) consisting of a calcium magnesium carbonate found in crystals and in beds as dolostone. A pure form of dolostone would be rare, however; it usually intergrades with limestone and is referred to as dolomitic limestone, or in old U. S. geologic literature as magnesian limestone. Dolomite has physical properties similar to those of the mineral calcite, but is less soluble in hydrochloric acid. There is uncertainty as to the cause of its formation,...

28_af149e6f4821ab4ec3c213f12d27e305
2005-05-26 09:38:30

Limestone is a sedimentary rock composed of the mineral calcite (calcium carbonate). The primary source of this calcite is usually marine organisms. These organisms secrete shells that settle out of the water column and are deposited on ocean floors as pelagic ooze (see lysocline for information on calcite dissolution). Secondary calcite may also be deposited by supersaturated meteoric waters (groundwater that precipitates the material in caves). This produces speleothems such as stalagmites...

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Word of the Day
baudekin
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.
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