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Перевод: apatite
[прилагательное] апатитовый; [существительное] апатит
Тезаурус:
- Apatite emissions range from bluish-violet, lilac, pink and orange to yellow.
- Depending on the activator, a single excited mineral may radiate at several different wavelengths; for example, apatite CL may be green, yellow, pink, violet or white, with a variety of rare earths acting as activators.
- The quartzo-feldspathic gneiss contains quartz, feldspar and hornblende as the principal minerals, variable though small amounts of biotite, and with iron ores and apatite as the common accessory minerals present.
- The thermal history of the South Mountains Granodiorite, provided by isotopic (U-Pb zircon, 40 Ar/ 39 Ar hornblende, K-Ar biotite) and fission-track (apatite) age determinations, indicates rapid cooling of 260CMyr -1 (from 800 to 300C) between 22 and 20Myr ago, followed by slower cooling of 73CMyr -1 (from 300 to 100C) between 20 and 17Myr (ref. 24).
- The metamorphism resulted from the spontaneous in-situ combustion of these organic-rich sediments and has produced a complex assemblage of minerals including quartz, wollastonite, spurrite, ellestadite, apatite, brownmillerite, magnetite, hematite, calcite and various oxides and ferrite minerals.
- Concentrations of apatite, magnetite, and base metals (Notholt and others, 1985) have aroused interest from time to time.
- It is also important, with porous rocks, to remove carefully all traces of the diamond polishing abrasives from the slide: industrial diamond grains have a brilliant green CL which produces halation spots, giving the impression of a larger grain, which is apt to be mistaken for an apatite or other heavy mineral gram.
- The apatite crystals are also much smaller being 200-;300 long and 40-;70 wide.
- These apatite crystals are embedded in an organic matrix which is mostly collagen.
- These veins contain diopside and phlogopite, with minor disseminated ilmenite, zircon, calcite, apatite and serpentine.
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