Latest Limestone Stories
Scientists have made synthetic â€˜sea shellsâ€™ from a mixture of chalk and polystyrene cups â€“ and produced a tough new material that could make our homes and offices more durable.
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.
Ice Age climate records from an Arizona stalagmite link the Southwest's winter precipitation to temperatures in the North Atlantic.
NEW YORK, Dec.
DALLAS, Oct. 27 /PRNewswire-FirstCall/ -- United States Lime & Minerals, Inc.
LAS VEGAS, Oct. 5 /PRNewswire-FirstCall/ -- Texas Wyoming Drilling, Inc.
RENO, NV, Sept. 14 /PRNewswire-FirstCall/ - Infrastructure Materials Corp (NASDAQ OTC-BB: Symbol IFAM) (the "Company") is pleased to announce results from the last 10 holes of a 24 drill hole program (7,000 ft) completed on the Morgan Hill Limestone Project.
TORONTO, Aug. 4 /PRNewswire-FirstCall/ - Infrastructure Materials Corp. (NASDAQ OTC-BB: Symbol IFAM) (the "Company") is pleased to announce results of a further 10 holes of a 24 drill hole program (7,000 ft) completed on the Morgan Hill Limestone Project.
DALLAS, July 24 /PRNewswire-FirstCall/ -- United States Lime & Minerals, Inc. (Nasdaq: USLM) today reported second quarter 2009 results: Revenues decreased to $29.1 million from $41.2 million in the comparable prior year quarter, a decrease of $12.1 million, or 29.3%.
RENO, NV, July 13 /PRNewswire-FirstCall/ - Infrastructure Materials Corp (NASDAQ OTC-BB: Symbol IFAM) (the "Company") is pleased to announce results from the first 4 holes of a 24 drill hole program (7,000 ft) completed on the Morgan Hill Limestone Project.
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...
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...
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,...
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,...
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...
- An armed gangster.