| |
 |
Hellandite-(Y) Mineral Data
|
|
|
General Hellandite-(Y) Information
|
 Chemical Formula: |
(Ca,REE)4(Y,Ce)2(Al,[ ])2[Si4B4O22](OH)2 |
| Composition: |
Molecular Weight = 1,029.47 gm |
| |
Calcium 11.68 % Ca 16.34 % CaO |
| |
Cerium 6.81 % Ce 7.97 % Ce2O3 |
| |
La,Ce,Pr,Nd,Sm, 13.99 % RE 16.32 % REE2O3 |
| |
Yttrium 12.95 % Y 16.45 % Y2O3 |
| |
Aluminum 1.97 % Al 3.71 % Al2O3 |
| |
Silicon 10.91 % Si 23.35 % SiO2 |
| |
Boron 4.20 % B 13.53 % B2O3 |
| |
Hydrogen 0.20 % H 1.75 % H2O |
| |
Oxygen 37.30 % O |
| |
______ ______ |
| |
100.00 % 99.42 % = TOTAL OXIDE |
| Empirical Formula: |
Ca3REEY1.5Ce0.5Al0.75(Si4B4O22)(OH)2 |
| Environment: |
Pegmatite |
| IMA Status: |
Valid Species (Pre-IMA) 1903 |
| Locality: |
Kragero, Telemark, Norway. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Amund Theodor Helland (1846-1918), geologist of Oslo, Norway. |
| Name Pronunciation: |
Hellandite-(Y) + Pronunciation  |
| Synonym: |
Hellandite |
| |
ICSD 100145 |
| |
IMA2000-F |
| |
PDF 25-184 |
| |