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Latest Silicate minerals Stories

2012-07-18 23:03:38

Pumice has long been recognized as the original, natural pozzolan–used by the Romans in their impressive 2000+ year-old concrete structures. A landmark study just released by the University of Utah details the performance, longevity and strength advantages of pumice as a concrete-fortifying pozzolan–advantages that are critical for today's high-performance infrastructure and industrial needs. The pumice pozzolan used in the study–HessPozz–was sourced from Hess Pumice...

2011-08-15 09:04:00

NEW YORK, Aug. 15, 2011 /PRNewswire/ -- Applied Minerals, Inc. (the "Company") (OTCBB: AMNL) is pleased to announce the launch of its updated corporate website located at www.appliedminerals.com. Over the last three years, as the Company has made significant investment to become a leading global producer and application developer of halloysite clay products, it has also focused significant effort on the development of a corporate website that, in our opinion, will become the premier...

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2011-03-05 11:20:00

Scientists have found that calcium, aluminum-rich inclusions (CAIs), some of the oldest objects in the solar system, formed far away from our sun and then later fell back into the mid-plane of the solar system.The findings may lead to a greater understanding of how our solar system and possibly other solar systems formed and evolved.CAIs, roughly millimeter- to centimeter in size, are believed to have formed very early in the evolution of the solar system and had contact with nebular gas,...

2010-10-28 08:00:00

(PRZCF.OTCBB)  (PH0.FRANKFURT)                    (TSXV.GR) VANCOUVER, Oct. 28 /PRNewswire/ - GREENLIGHT RESOURCES INC. (TSXV.GR) announces that pursuant to the terms of the Letter of Intent, dated April 14, 2010 between the Company, Champlain Mineral Ventures Limited ("Champlain") of Bridgetown, Nova Scotia and Silchlor Inc. ("Silchlor") of Pittsburgh, Pennsylvania; the Company has commenced...

2010-10-26 08:00:00

(PRZCF.OTCBB) (PH0.FRANKFURT) (TSXV.GR) VANCOUVER, Oct. 25 /PRNewswire/ - GREENLIGHT RESOURCES INC. (TSXV.GR), announces an update on its field exploration program on the Brazil Lake Lithium and Rare Metal property in Nova Scotia.  Three new primary target areas have been identified, which are in addition to the known North and South pegmatite dikes. The three new targets, identified by pegmatite boulder float trains include the Deerfield, Army Road and Church Road areas....

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2010-09-25 06:40:00

Scientists have wondered for some time why certain seismic waves travel more quickly through the core-mantle boundary, a thin layer of the Earth's interior that lies between about 1675 and 1800 miles below the surface. Now a new study by Yale University and the University of California, Berkeley sheds light on the mystery by showing how this region behaves under the extreme conditions found so deep in the Earth. The findings, which appeared in the Sept. 24 issue of the journal Science, have...

2010-08-23 11:49:00

(PRZCF.OTCBB) (PH0.FRANKFURT) (TSXV.GR) VANCOUVER, Aug. 23 /PRNewswire-FirstCall/ - GREENLIGHT RESOURCES INC. (TSXV.GR), announces that it has received preliminary results from its mapping and prospecting on its Brazil Lake Lithium and Rare Metal property in Nova Scotia. Three new primary target areas have been identified, which are in addition to the known North and South pegmatite dikes which are currently being drilled. The three new targets, identified by pegmatite boulder float trains,...


Latest Silicate minerals Reference Libraries

28_9de5c05320ccdc491872fa501c117601
2005-05-26 12:19:41

Amphibole defines an important group of dark-colored rock-forming inosilicate minerals composed of double chain SiO4 tetrahedra linked at the vertices and generally containing ions of iron and/ or magnesium in their structures. In chemical composition and general characteristics they are very similar to the pyroxenes and, like them, fall into three series according to their system of crystallization. The chief difference between amphiboles and pyroxenes is in cleavage: amphiboles form oblique...

28_65bb1e3b5e8109d8123acc847d3660d1
2005-05-26 12:13:03

Augite is a mafic mineral described chemically as (Ca, Na)(Mg, Fe, Al)(Al, Si)2O6 or calcium sodium magnesium iron aluminium silicate. Structurally, it is a solid solution of the pyroxene group which also contains diopside and hedenbergite. The crystals are monoclinic and prismatic. It is found in igneous rocks such as gabbros and basalts, and in metamorphic rocks from hydrothermal vents. Occasional specimens have a shiny appearance that give rise to the mineral's name, which is from the...

28_f4674a83f161cadcccd1630ce2cd41b3
2005-05-26 11:03:19

Dioptase is an intense emerald-green to bluish-green copper cyclosilicate mineral. It is transparent to translucent. Its luster is vitreous to sub-adamantine. Its formula is CuSiO3·H2O (also reported as: CuSiO2(OH)2). It has a hardness of 5, the same as tooth enamel. It specific gravity is 3.28 - 3.35, and it has two perfect and one very good cleavage directions. Additionally, dioptase is very fragile and specimens must be handled with great care. It is a trigonal mineral, forming 6-sided...

28_6ee8d945ab2e5bbffeccd2954b98b10d
2005-05-26 10:58:09

The Garnet group of minerals show crystals with a habit of dodecahedrons and trapezohedrons. They are nesosilicates with the same general formula, A3B2(SiO4)3. The chemical elements in garnet include calcium, magnesium, aluminium, iron2+, iron3+, chromium, manganese, and titanium. Garnets show no cleavage and a dodecahedral parting. Fracture is conchoidal to uneven; some varieties are very tough and are valuable for abrasive purposes. Hardness is 6.5 - 7.5, specific gravity is 3.1 - 4.3,...

28_91155bb594b05769b6029ff5e745c5a6
2005-05-26 09:42:14

Kaolinite is a mineral with the chemical composition Al2Si2O5(OH)4. It is a layered silicate mineral, with one tetrahedral sheet linked through oxygen molecules to one octahedral sheet of alumina octahedra. It is also known as china clay and kaolin (高嶺土 in pinyin: gao1 ling3 tu3), named after Gaoling ("High Hill"), Jingde Town, Jiangxi, China. It is a soft, earthy, usually white mineral (dioctahedral phyllosilicate clay), produced by the chemical weathering of feldspar. In...

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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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