Alnaperbøeite-(Ce) (original) (raw)
General Appearance of Type Material:
In yttrian fluorite as gatelite-like crystals, some intimately inter-or overgrown by törnebohmite-(Ce)
Place of Conservation of Type Material:
Museo di Storia Naturale, Università degli Studi di Firenze, Firenze, Italy, catalogue number 3114/I
Empirical Formula of Type Material:
(Ca1.10Mn0.03Na0.20La0.42Ce1.14Pr0.16Nd0.60Sm0.13Gd0.07Dy0.03 Er0.01Yb0.01Y0.12Th0.02)Σ4.04 (Al3.54Fe2+0.40Mg0.02)Σ3.96Si4.99O20(OH)2
Chemical Analysis of Type Material:
| Ce2O3 | 40.86 % |
|---|---|
| CaO | 5.58 % |
| Na2O | 1.54 % |
| Al2O3 | 20.31 % |
| SiO2 | 29.92 % |
| H2O | 1.79 % |
| Total: | 100 % |
Geological Setting of Type Material:
quartz-microcline pegmatites of the niobium-yttrium-fluorine family
Associated Minerals at Type Locality: