What's the plural form of shattuckite? Here's the word you're looking for.
Answer
The noun shattuckite can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be shattuckite.
However, in more specific contexts, the plural form can also be shattuckites e.g. in reference to various types of shattuckites
or a collection of shattuckites.
