(n.) A piece of magnetic iron ore possessing polarity like a magnetic needle. See Magnetite.
(n.) Same as Loadstone.
Example Sentences:
(1) The truly odd thing, though, is that although the Sex and the City TV series ended in 2004, the same year the second Bridget Jones movie came out, both are still used as cultural lodestones in our discussion of women and sex: they came up again and again among the twentysomething women I spoke to online.
(2) The water bubbled as if it was boiling, and afterwards the bottom of the pool was stained with a shape Angie describes as “a beast of the underworld; it reminded me of those twisted, tormented gargoyles screaming silently from the spires of medieval cathedrals.” It’s no wonder that Bowie made his escape – to Berlin, where he made the famous trilogy of albums which are the lodestone of his creativity.
Siderite
Definition:
(n.) Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light yellowish brown color. Called also sparry iron, spathic iron.
(n.) A meteorite consisting solely of metallic iron.
(n.) An indigo-blue variety of quartz.
(n.) Formerly, magnetic iron ore, or loadstone.
(n.) Any plant of the genus Sideritis; ironwort.
Example Sentences:
(1) Kinetics of CO2 and O2 production was investigated in the following systems: H2O - H2O2 - C6H5OH - siderite, H2O - H2O2 - HCl - siderite, H2O - H2O2 - siderite, H2O - HCl - siderite.
(2) The siderite FeCO3 is also active, but the iron oxides and oxyhydroxides are generally nonactive.
(3) siderite, the degree of C2H6O2 to CO2 conversion was 99.2% and 99.8, respectively.
(4) The rate of oxygen production in the presence of phenol and siderite was described as Vo2 = k1 [H2O2]1.46.