chalcocite
Americannoun
noun
Etymology
Origin of chalcocite
1865–70; irregular chalco- + (anthra)cite
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The production of copper from chalcocite is performed by roasting the Cu2S in air to produce the Cu.
From Textbooks ● Feb. 14, 2019
Orvana has received approval to mine chalcocite, a mineral that is primarily copper, in a project here that the company says will create $2 billion in economic activity over 20 years.
From New York Times ● May 25, 2012
The present tendency at Butte is to consider as secondary chalcocite only certain sooty phases to be found in upper levels.
From The Economic Aspect of Geology by C. K. (Charles Kenneth) Leith
At Butte for instance, secondary chalcocite is clearly to be recognized.
From The Economic Aspect of Geology by C. K. (Charles Kenneth) Leith
In the United Verde Mine, oxidizing conditions at present prevail to the bottom of the chalcocite zone.
From The Economic Aspect of Geology by C. K. (Charles Kenneth) Leith
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