putnisite (English, noun)
expansion: putnisite (uncountable)
Senses:
glosses: A quartz-like mineral, purple in colour, naturally occurring brittle crystals smaller than 0.5 mm, with an orthorhombic crystalline matrix of SrCa₄Cr³⁺₈(CO₃)₈SO₄(OH)₁₆·23H₂O
tags: uncountable
Forms: