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sphalerite
This term is used primarily within the specialized registers of geology, mineralogy, and mining. It describes a specific chemical compound (zinc sulfide) and is treated as a technical classification rather than a general descriptive term.
As a mineral name, it is typically used as an uncountable mass noun when referring to the substance in general. While it can be used countably when referring to specific crystal specimens or distinct mineral occurrences, it most frequently functions as an uncountable noun in scientific reporting.
Meanings
Examples
The geologist identified the sample as sphalerite based on its resinous luster.
Look at this crystal. It is a beautiful piece of sphalerite.
Sphalerite is the most important ore for the production of zinc.
I wonder if this vein contains more sphalerite or galena.
The mining company focuses on extracting sphalerite from the deep deposits.
We need to analyze the iron content within the sphalerite crystals.
The specimen of sphalerite showed a distinct cubic cleavage.
Is this really sphalerite or just a piece of common pyrite?