What's the difference between blue and covellite?

Blue


Definition:

  • (superl.) Having the color of the clear sky, or a hue resembling it, whether lighter or darker; as, the deep, blue sea; as blue as a sapphire; blue violets.
  • (superl.) Pale, without redness or glare, -- said of a flame; hence, of the color of burning brimstone, betokening the presence of ghosts or devils; as, the candle burns blue; the air was blue with oaths.
  • (superl.) Low in spirits; melancholy; as, to feel blue.
  • (superl.) Suited to produce low spirits; gloomy in prospect; as, thongs looked blue.
  • (superl.) Severe or over strict in morals; gloom; as, blue and sour religionists; suiting one who is over strict in morals; inculcating an impracticable, severe, or gloomy mortality; as, blue laws.
  • (superl.) Literary; -- applied to women; -- an abbreviation of bluestocking.
  • (n.) One of the seven colors into which the rays of light divide themselves, when refracted through a glass prism; the color of the clear sky, or a color resembling that, whether lighter or darker; a pigment having such color. Sometimes, poetically, the sky.
  • (n.) A pedantic woman; a bluestocking.
  • (pl.) Low spirits; a fit of despondency; melancholy.
  • (v. t.) To make blue; to dye of a blue color; to make blue by heating, as metals, etc.

Example Sentences:

  • (1) Within the outflow tract wall, the labelled cells were enmeshed by strands of alcian blue-stained extracellular matrix.
  • (2) The most successful dyes were phenocyanin TC, gallein, fluorone black, alizarin cyanin BB and alizarin blue S. Celestin blue B with an iron mordant is quite successful if properly handled to prevent gelling of solutions.
  • (3) It contains 10,000 apartments so far, in blocks that might appear Soviet but for shades of blue, green and yellow.
  • (4) Of all materials evaluated, Xantopren Blue and Silene silicone impression materials provided the best results in vivo.
  • (5) Most notably, retroperitoneal lymph nodes in rabbits remained dark blue up to 28 days after hindlimb endolymphatic instillation of liposomal patent blue.
  • (6) To selectively stain polyanionic macromolecules of growth plate cartilage and to prevent artifacts induced by aqueous fixation, proximal tibial growth plates were excised from rats, slam-frozen, and freeze-substituted in 100% methanol containing the cationic dye Alcian blue.
  • (7) The behaviour of the enzyme from Candida utilis and from Baker's yeast on columns of these and of Blue Sepharose CL-6B was examined, together with the behaviour of the contaminating enzyme, ribulose 5-phosphate 3-epimerase (EC 5.1.3.1).
  • (8) After methylene blue, the gradient in resting potential across the circular layer was greatly reduced or abolished.
  • (9) Furthermore, Methylene Blue contamination of the standard stain increased the rate of error in image analysis of white blood cell nuclei due to variations of staining intensity.
  • (10) The purpose was to show whether or not the methylene-blue test can be postponed to the second day.
  • (11) It was like watching somebody pouring a blue liquid into a glass, it just began filling up.
  • (12) July 7, 2016 Verified account A blue tick that tells you the user is either an A-list celebrity, a respected authority on an important subject or a BuzzFeed employee.
  • (13) The amount of formazan obtained after incubating vital cells with Meldola Blue as electron carrier was greater than that obtained with Methylene Blue, menadione, 2,6-dichloroindophenol, 1-methoxyphenazine methosulphate or phenazine methosulphate.
  • (14) India will have three carriers and both China and India are building blue-water [ocean-going] navies.
  • (15) On dissected mucosa stained by the PAS-alcian blue whole-mount method the density and distribution of goblet cells in various parts of the middle ear was determined in 13 children, ranging in age from 9 days to 14 years.
  • (16) The results showed immunostaining to function equally well on frozen and routine sections, and to be superior to Alcian Blue and PAS with regard to morphological detail.
  • (17) The working women lost their elasticity more rapidly than the nuns, and the male blue collar workers lost their elasticity more rapidly than the male white collar workers.
  • (18) How often do we use the term depressed to mean disappointed, mildly bummed out or sort of blue?
  • (19) Microotoscopy showed a blue pulsating mass behind the tympanic membrane.
  • (20) One day, out of the blue, there's a knock on the door.

Covellite


Definition:

  • (n.) A native sulphide of copper, occuring in masses of a dark blue color; -- hence called indigo copper.

Example Sentences:

  • (1) Optimum conditions for the oxidation of chalcocite were: pH, 1.7 to 2.3; temperature, 35 C; and ferric iron concentration in the range of 0.004 to 0.01 M. For covellite, the optimum conditions were: pH 2.3; temperature, 35 C; and ferric iron concentration in the range of 0.004 to 0.02 M. The energies of activation were determined to be 16.3 kcal (ca.
  • (2) Biodegradation of chalcocite was found to be 90 to 100% and that of covellite 45 to 60%.
  • (3) "Oxygraph" apparatus was used to measure quantitatively the kinetics of oxidation of synthetic covellite (CuS) in the presence and absence of Thiobacillus species.
  • (4) In contrast, all Cu X-ray photoelectron signals of the more tentatively described mixed valence complexes Na2Cu3S3 and the mineral covellite, CuI4CuII2(S2)2S2, could be attributed exclusively to Cu(I).
  • (5) 4.8 X 10(4) J) per mol for chalcocite and covellite, respectively.
  • (6) The microbiological oxidation of synthetic chalcocite and covellite has been investigated using an adapted strain of Thiobacillus ferrooxidans.

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