Mica as a noun is the name of a group of hydrous aluminosilicate minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic. while Talc as a noun is a soft mineral of a soapy feel and a greenish, whitish, or grayish color, usually occurring in foliated masses.
Part of speech: noun
Definition: The name of a group of hydrous aluminosilicate minerals characterized by highly perfect cleavage, so that they readily separate into very thin leaves, more or less elastic.
Part of speech: noun
Definition: A soft mineral of a soapy feel and a greenish, whitish, or grayish color, usually occurring in foliated masses.
We hope you now know whether to use Mica or Talc in your sentence.