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Latest Limestone Stories

1e541c8ddbe28a46076b84edebbc53ae1
2011-02-23 10:56:19

An international research team, with Spanish participation, has discovered a new species of mollusk, Polyconites hadriani, in various parts of the Iberian Peninsula. The researchers say this species, which is the oldest in its genus, adapted to the acidification of the oceans that took place while it was in existence. This process could now determine the evolution of modern marine systems. The new species Polyconites hadriani, which was discovered in 2007, has been crowned the oldest in the...

2011-01-12 08:00:00

Regional disparities in the recovery process will exist ORLANDO, Fla., Jan. 12, 2011 /PRNewswire-USNewswire/ -- Employment numbers seem to be improving, but tight lending standards and large home inventories are sending a clear signal to homebuilders to restrain building activity in 2011. According to a recent report by the Portland Cement Association (PCA), the U.S. will record 492,000 housing starts in 2011, a modest 3.4 percent gain compared to 2010 levels. This will increase...

2010-12-16 07:00:00

ZHAOYUAN CITY, China, Dec. 16, 2010 /PRNewswire-Asia/ -- China Shuangji Cement, Ltd. (OTC Bulletin Board: CSGJ) ("China Shuangji" or the "Company"), a leading producer of high-quality Portland cement in Shandong and Hainan Provinces in the People's Republic of China (PRC), announced that its Dongfang cement plant on Hainan Island, which it previously announced was on a published list of more than 2,000 production lines across China that the Ministry of Industry and Information Technology...

2010-12-14 07:00:00

ZHAOYUAN, China, Dec. 14, 2010 /PRNewswire-Asia/ -- China Shuangji Cement, Ltd. (OTC Bulletin Board: CSGJ) ("China Shuangji" or the "Company"), a leading producer of high-quality Portland cement in Shandong and Hainan Provinces in the People's Republic of China (PRC), announced today that it has retained Column Associates, a premier international executive search firm, to lead the search to find a new full-time CFO to replace its interim CFO. Column Associates, headquartered in Beijing,...

2010-12-08 07:00:00

ZHAOYUAN CITY, China, Dec. 8, 2010 /PRNewswire-Asia-FirstCall/ -- China Shuangji Cement, Ltd. (OTC Bulletin Board: CSGJ) ("China Shuangji" or the "Company"), a leading producer of high-quality Portland cement in Shandong and Hainan Provinces in the People's Republic of China (PRC), announced today that it has begun the permit process to build a new a new 2,000,000 MT cement plant on Hainan Island to replace its existing Dongfang production line. China Shuangji's new state-of-the-art...

2010-11-18 09:15:00

The ability to tell the difference between crystals that formed naturally and those formed by human activity can be important to archaeologists in the field. This can be a crucial bit of information in determining the ancient activities that took place at a site, yet archaeologists often wait for months for the results of laboratory tests. Now, however, an international team of physicists, archaeologists and materials scientists has developed a process that can tell in a matter of minutes the...

2010-11-16 10:44:00

CLEVELAND, Nov. 16, 2010 /PRNewswire/ -- Resilience Capital Partners, a leading private equity firm, announced the acquisition of Indiana Limestone Company. This transaction is the second acquisition under Resilience's industrial minerals platform, North Coast Minerals. Indiana Limestone is a complementary business to Victor Oolitic Stone Company, which was acquired by Resilience in November 2009. Like Victor Oolitic, Indiana Limestone has been a leading supplier of Indiana limestone to...

2010-11-01 10:57:00

DALLAS, Nov. 1, 2010 /PRNewswire/ -- (http://www.myprgenie.com) -- Daltile has relaunched its ONE(TM) Quartz line of quartz slabs and tiles with the introduction of 24 new colors and two new collections. The new Micro Flecks collection features a fine grain detail, while the Geo Flecks collection reflects the look of natural granite and limestone graining. "This re-launch of Daltile's ONE Quartz surfaces brings together the beauty of natural quartz and modern technology, paired with more...

2010-09-14 08:15:00

RENO, NV, Sept. 14 /PRNewswire-FirstCall/ - Infrastructure Materials Corp. (NASDAQ OTC-BB: Symbol IFAM) (the "Company") is pleased to announce the completion of drilling and initial assay results on the Blue Nose Project under the Plan of Operations. 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. This extensive drill program, on approximately 14 of the project's 301 claims, is designed to...

2010-07-27 15:01:00

DALLAS, July 27 /PRNewswire-FirstCall/ -- United States Lime & Minerals, Inc. (Nasdaq: USLM) today reported second quarter 2010 results: Revenues increased to $37.9 million from $29.1 million in the comparable prior year quarter, an increase of $8.8 million, or 30.2%. Revenues from the Company's lime and limestone operations in the second quarter 2010 increased $8.5 million, or 30.8%, to $36.2 million from $27.6 million in the comparable 2009 quarter, while revenues from its natural...


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
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
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