Crossword-Solution: MELACONITE
Dictionary
| Word | Word Type | Definition |
|---|---|---|
| Melaconite | n. | An earthy black oxide of copper, arising from the decomposition of other ores. |
We have 1 clue for the answer “MELACONITE”
| Clue | Answers |
|---|---|
| an earthy black oxide of copper, arising from the decomposition of other ores | 1 answer |
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Poet’s word, with inverted comma, for the end of the day
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E
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Hint 1 meaning
The old plural of Eye.
Hint 2 anagram
ENE
Hint 3 another clue
AND STILL ___
19 +1
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Sentences with MELACONITE (5)
Melaconite (q.v.) was formerly largely worked in the Lake Superior region, and is abundant in some of the mines of Tennessee and the Mississippi valley.
Cupric oxide, CuO, occurs in nature as the mineral melaconite (q.v.), and can be obtained as a hygroscopic black powder by the gentle ignition of copper nitrate, carbonate or hydroxide; also by heating the hydroxide.
Copper-glance readily alters to other minerals, such as malachite, covellite, melaconite and chalcopyrite.
Haidinger in 1845; earlier names are red copper ore and ruby copper, which at once distinguish this mineral from the other native copper oxide--cupric oxide--known as black copper ore or melaconite.
The deposits were at first very promising, as they consisted largely of very rich melaconite ore; this was however, quickly worked out, the ordinary heavy chalcopyrite with 2·5 per cent.