of chloride of sodium; then, in a smaller quantity, chlorides of magnesium and of potassium, bromide of magnesium, sulphate of magnesia, sulphate and carbonate
When we remember that lime, either as a phosphate or carbonate, enters into the composition of the hard parts, such as bones and shells, of all living animals, it is an interesting physiological fact  to find substances harder than the enamel of teeth, and coloured surfaces as well polished as those of a fresh shell, reformed through inorganic means from dead organic matter -- mocking, also, in shape, some of the lower vegetable productions.
It is much softer, more transparent, and contains more animal matter, than the natural incrustation at Ascension; but we here again see the strong tendency which carbonate of lime and animal matter evince to form a solid substance allied to shell.
"White quartzose sand," Paul rattled off, "sodic carbonate
, slaked lime, cutlet, manganese peroxide--there you have it, the finest French plate glass, made by the great St.
launched a series of ground calcium carbonates
earlier this year at The Precast Show in Denver, underscoring the powders' capacity to replace fly ash; improve concrete mix workability; contribute to self-consolidating mix spread profile; and, maintain consistent white color without impacting fresh or hardened concrete properties.
Baobab's exploration team has discovered a package of carbonate
rocks (the 'Massamba carbonates
') considered suitable as a source of flux material for the Company's envisaged iron making process.
Teens are high consumers of carbonates
, and companies arguably don't feel the need to target them overtly, especially given the unhealthy image of sugary carbonates
and their links to obesity.
The other way to determine the OC content of Calcarosols by dry combustion is to use acid pre-treatment to remove carbonates
(Nelson and Sommers 1996; Skjemstad et al.
In most carbonates
rocks, the frequently occurring minerals are calcite (CaC[O.sub.3]), dolomite (CaMg(C[O.sub.3]).sub.2]), and Aragonite (CaC[O.sub.3]), other minerals are; otavite, smithsonite, siderite, magnesite, rhodochrosite, vaterite etc .
Previously, it was thought that fine-grained carbonates
, which constitute a major component of marine carbonate
sediments, were derived primarily from either direct precipitation from sea water or from the breakdown of the skeletons of marine invertebrates and algae.
The team is working with oil companies Qatar Petroleum and Shell on the 10-year project, called Qatar Carbonates
and Carbon Storage Research.