putnisite

释义与例句

n.
  1. 1.

    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

    不可数

词源

From Putnis + -ite, from the name of the discoverers, mineralogists Andrew and Christine Putnis.

来源：wiktionary