礦物資料庫與水晶療法礦物Gjerdingenite-CaGjerdingenite-CaK2Ca(Nb,Ti)4(Si4O12)2(O,OH)4·6H2OMonoclino IMA approved成分Composizione (% in peso)ONbSiKOOxygen42.8%NbNiobium29.2%SiSilicon17.7%KPotassium6.2%CaCalcium3.2%HHydrogen1.0%詞源命名來源 calcium.