Latest Limestone Stories

2008-09-16 15:00:28

CALGARY, Sept. 16 /PRNewswire-FirstCall/ -- Birch Mountain Resources Ltd. ("Birch Mountain" or the "Company"; BMD: TSX) is pleased to report that the Muskeg Valley Quarry ("MVQ") recently set a new daily record for limestone aggregates shipped. On September 11, 2008 a total of 23,100 tonnes were loaded, scaled and shipped in 720 truckloads to 8 different customer accounts. In the week ending September 14, 2008, over 95,000 tonnes of limestone aggregate and reagent products were shipped from...

2008-08-06 09:00:45

TORONTO, ONTARIO--(Marketwire - Aug. 6, 2008) - Pelangio Mines Inc. (TSX:PLG) ("Pelangio") has been advised by Detour Gold Corporation ("Detour Gold") that it has released drill results of 21 holes from the Calcite and Gap Zones of its Phase II drilling program at the Detour Lake property in northern Ontario. Detour Gold started Phase II drilling in July 2007 and thus far has completed 351 holes totaling 137,702 metres (including 29 holes abandoned for 2,401 metres and deepening of 9 holes...

2008-07-28 09:01:20

Cavico Corporation (OTC BB: CVIC) ("Cavico" or "the Company"), a leading infrastructure development company in Vietnam, today announced that Cavico Mineral Exploitation is expanding construction and exploring for additional deposits at the Thung San mine. Cavico Mineral Exploitation is an entity formed by the two wholly owned Cavico subsidiaries, Cavico Tunnel and Cavico Hydropower. The Thung San mine, situated on 20 hectares of land in Quy Hop district, Nghe An province, has 20 million...

2008-07-24 13:32:20

At Fort Stanton Cave in New Mexico, hundreds of feet below the Earth's surface, an odd formation made up of an intricate crust of tiny calcite crystals continues to intrigue cave specialists and explorers. The formation is known as "Snowy River", due to its long, flowing presence on the cave's floor. It is thought to be the longest continuous cave formation in the world "” at least 4 miles long "” and explorers have yet to find its end. "I think Snowy River is one of the primo...

2008-07-10 12:00:38

CALGARY, July 10 /PRNewswire-FirstCall/ -- Birch Mountain Resources Ltd. ("Birch Mountain" or the "Company") (BMD: TSX and AMEX) announces that it has received an order from a major oil sands producer to conduct a 4-month, full-scale trial of Birch Mountain's reagent limestone for treating air emissions from a coke-fired power plant. Throughout the trial period, which begins immediately, Birch Mountain will supply the reagent limestone requirements for this facility. "The primary use for...

2005-06-01 06:28:36

ALBUQUERQUE, N.M. -- A calcite formation named Snowy River could prove a gold mine for scientists. Snowy River, believed to be the largest continuous calcite formation in the world, was discovered in September 2001 by a Bureau of Land Management team led by veteran speleologist John McLean of Colorado. The stark white passage, looking like a river of snow surrounded by walls of brown clay and black manganese dioxide deposits, stretches more than two miles from Fort Stanton Cave in...

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...

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...

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,...

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,...

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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