(n.) Calcium carbonate, or carbonate of lime. It is rhombohedral in its crystallization, and thus distinguished from aragonite. It includes common limestone, chalk, and marble. Called also calc-spar and calcareous spar.
Example Sentences:
(1) The crystallographic orientation of the calcite also appears to be independent of these fibrils.
(2) The calcium carbonates-calcite, aragonite, and vaterite-constitute most of the remainder of the calculi.
(3) Crystallographic analysis of stones from patients with nutritional pancreatitis (NP), as well as alcoholic pancreatitis (AP), revealed that the main constituent was calcite (CaCO3).
(4) Calcite was present in all stones, vaterite in 12%, and a central amorphous material in 30%.
(5) X-ray diffraction showed that calcite (CaCO3) was the major crystalline constituent of the calcareous deposits.
(6) When the doped glasses have been immersed in a physiological solution (199 medium), a film of calcite forms on the glass surface and this modification is related to the type of doping agent used, decisive for close linking between metal supports and the glass.
(7) We suggest that precipitation of calcite in the pancreatic duct occurs as the primary event in the formation of pancreatic calculi and that it may continue until the duct is completely occluded.
(8) 5-7): calcite and quartz are the principal components of the sinters, additional diffuse apatite lines appear in bone samples.
(9) These features are characteristic of sea urchin (Echinoderm) spines which are composed of ornately formed calcite crystals covered by an epithelium.
(10) Its absence in all analyzed invertebrate tissues (including calcitic, aragonitic, and apatitic mineral phases) indicates that matrix protein-bound gamma-carboxyglutamic acid is not obligatory for the calcification process in the invertebrates.
(11) Quantitatively, phosphate is by far the most important inhibitor of calcite precipitation present in saliva, suggesting that inhibition of calcite precipitation by the macromolecules may be of secondary significance.
(12) Plates of calcite (CaCO3) were implanted in rabbit tibiae, and their biocompatibility and bonding ability to bone were studied.
(13) Subsequent increase in diameter of the rod involves the radial development of irregular columns of calcite which arise from the peripheral nodules.
(14) The phenomenon of dissolution and recrystallisation in situ of the calcite can be a trap because it can be a reservoir for micro-organisms.
(15) Synechococcus strain GL24 was isolated from Fayetteville Green Lake, New York, where it has a demonstrated role in the formation of calcitic minerals.
(16) Pancreatic stones are observed in both humans and cattle, and are approximately 95% CaCO3 (calcite) in both species.
(17) Skeletal walls of more than one mineralogy have the magnesium-rich layer (calcite) surrounding the living chamber and the strontium-rich layer (aragonite) on the outside.
(18) Here we report on the ability of a soil bacterium to synthesize calcite in a calcium-stressed environment.
(19) Formation of inner protein nidus in the form of a cobweb is the first stage, then calcite is deposited on this fibrous network as tiny crystals.
(20) The biocompatibility of mammal bone with aragonite and calcite skeletons of aquatic invertebrates (Corals, Molluscs) led us, after animal experimentation, to implant in humans artificial dental roots derived from such invertebrates.
Dolomite
Definition:
(n.) A mineral consisting of the carbonate of lime and magnesia in varying proportions. It occurs in distinct crystals, and in extensive beds as a compact limestone, often crystalline granular, either white or clouded. It includes much of the common white marble. Also called bitter spar.
Example Sentences:
(1) Assuming that the 14C taken up by the corpuscles was in the form of 14CO3(2-), the ratio of Ca2+ to CO3(2-) accumulation in the corpuscles approximates the ratio of these constituents in dolomite: CaMg(CO3)2.
(2) It also has catered chalets in Italy, such as Chalet Heidi in Arabba , in the Dolomites, catered for the week 3 February for £629pp.
(3) Examples of uroliths that have been uncommonly encountered in dogs include xanthine, dolomite, tetracycline, and sulfonamides.
(4) It is shown that the solubility of dolomites formed by precipitation at ordinary temperatures is such that it allows for the formation of dolomite in tooth enamel during in vivo mineralization.
(5) On the basis of the investigations a complex filter made of silver plated minerals--dolomite and fluorite--has been developed.
(6) Pistorius was born in 1986 in Johannesburg to Sheila and Henke, who works in dolomite mining.
(7) • lenzerheide.com , guided rides including bike rental from £44 Book it: STC (stc.co.uk) has a week B&B in Lenzerheide from £948pp, including flights from London to Zurich, and return rail transfers Snowshoeing, Alta Badia, Italy Facebook Twitter Pinterest Many mountain regions claim a long history of snowshoeing, but none has the carbon-dated proof the Italian Dolomites have.
(8) Liming acid soils with dolomitic lime increases forage Mg by supplying Mg and by raising soil pH.
(9) The following soil applications were made during each of 3 yr: 1) none, 2) dolomitic limestone and 3) fluidized-bed combustion residue (FBCR).
(10) It was the magical bluestone - spotted dolomite, which when newly quarried is dark blue speckled with brilliant white stars of quartz - that made Stonehenge the Lourdes of prehistoric Europe, they believe.
(11) Calcium supplements (calcium phosphate dibasic, oyster shell preparations with and without supplemental magnesium, calcium lactate, calcium carbonate with and without supplemental iron and vitamins, dolomite and chelated calcium with and without chelated magnesium) and nonfat dry milk were the sole sources of calcium in nutritionally adequate diets.
(12) Eight calcitic and three dolomitic limestones were examined for particle size and reactivity with hydrochloric acid at pH 3.5 and 5.5.
(13) • Contact swimtrek.com for prices Running in the Dolomites Facebook Twitter Pinterest Photograph: Augusto Mia Battaglia Marathons are a popular inspiration for a running holiday, with visitors combining a trip abroad with a 26-mile run anywhere from New York to Amsterdam, Paris to Pyongyang .
(14) A solid-state chemical model is derived to estimate the solubility of dolomites having different degrees of cation ordering.
(15) In study 1, weanling male rats were fed either nonfat dry milk or CaHPO4, dolomite or a calcium chelate with supplemental lactose or sucrose for 27 d. In study 2, weanling male rats were fed diets based on milk or lactose-hydrolyzed milk for 28 d or in one meal labeled with 45Ca.
(16) • icekart.at , from £10 a session Book it: Iglu Ski has four nights half-board in Saalbach from £477, including flights and transfers Hot-air ballooning, Italian Dolomites Facebook Twitter Pinterest The picturesque Dolomites are at their most stunning when covered in snow and viewed from the basket of a floating hot-air balloon.
(17) Quartz, calcite, feldspar, smectite, inter-stratified phases, kaolinite, amphibole, muscovite and dolomite are other contaminating minerals.
(18) Bronchoscopic examination may reveal white gelatinous material in the bronchial lumen, mucosal ulcerations, polypoid inflammation, scattered green-blue pigmented areas and narrowed bronchi with post-stenotic dilatation, some of which resemble colored dolomite caves.
(19) • Find it on Google Maps 4 Pozze Smeraldine, Dolomites Facebook Twitter Pinterest Photograph: Michele Tameni In the Dolomiti Friulane natural park , down in the Cellina valley on the way to the village of Barci are many wild, unspoilt pools and gorges.
(20) • Find it on Google Maps 2 Spiaggia Giamaica, Lombardy Facebook Twitter Pinterest Photograph: Michele Tameni In this region of great lakes, the Dolomites, and stunning green valleys, the landscape is perfect for trekking, having fun in the sun, or a dip in the water.