Minerals Flashcards | Quizlet
Study terms for Minerals Unit Learn with flashcards, games, and more — for free. Search. Create. Log in Sign up. Log in Sign up. Minerals. ... used in talcum powder. ... gray, soft, used in pencil "lead" Calcite. Calcite cleavage in a rhombus pattern, double refraction, reaction to acid, found in milk. Fluorite. Fluorite glows under UV ...