| No, they're a mix of calcite, mica flakes, and prehnite. | ไม่ใช่ มันเป็นส่วนสผมของแคลไซส์ ไมค้าเฟลกซ์และเฟนไนท์ The Diamond in the Rough (2013) |
| Prehnitic | a. (Chem.) Pertaining to, or designating, a tetrabasic acid of benzene obtained as a white crystalline substance; -- probably so called from the resemblance of the wartlike crystals to the mammillæ on the surface of prehnite. [ 1913 Webster ] |