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