Latest Calcite Stories
Overfishing and disease have decimated shellfish populations in many of the world's temperate estuarine and coastal ecosystems.
Many scientists currently think at least 5 percent of humanity's carbon footprint comes from the concrete industry, both from energy use and the carbon dioxide (CO2) byproduct from the production of cement, one of concrete's principal components.
Sea urchins dig themselves hiding holes in the limestone of the ocean floor using teeth that donâ€™t go blunt.
TORONTO, ONTARIO--(Marketwire - Aug. 6, 2008) - Pelangio Mines Inc.
At Fort Stanton Cave in New Mexico, hundreds of feet below the Earthâ€™s surface, an odd formation made up of an intricate crust of tiny calcite crystals continues to intrigue cave specialists and explorers.
By Anonymous SUMMER ENTICEMENTS: Despite the price of gasoline, there are mineral events aplenty to lure us onto the open road with our vacation days.
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.
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,...
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...
- A trick or prank.