| |
 |
Ashcroftine-(Y) Mineral Data
|
|
|
General Ashcroftine-(Y) Information
|
 Chemical Formula: |
K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8•8(H2O) |
| Composition: |
Molecular Weight = 3,810.20 gm |
| |
Potassium 5.13 % K 6.18 % K2O |
| |
Sodium 3.02 % Na 4.07 % Na2O |
| |
Calcium 2.10 % Ca 2.94 % CaO |
| |
Yttrium 23.33 % Y 29.63 % Y2O3 |
| |
Silicon 20.64 % Si 44.15 % SiO2 |
| |
Hydrogen 0.42 % H 3.78 % H2O |
| |
Carbon 2.52 % C 9.24 % CO2 |
| |
Oxygen 42.83 % O |
| |
______ ______ |
| |
100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
K5Na5Y10Ca2Si28O70(CO3)8•8(H2O) |
| Environment: |
In nepheline syenites. |
| IMA Status: |
Valid Species (Pre-IMA) 1933 |
| Locality: |
From Narssarssuk, Greenland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Frederick Noel Ashcroft (1878-1949), benefactor to the British Museum (Natural History), London, England. |
| Name Pronunciation: |
Ashcroftine-(Y) + Pronunciation  |
| Synonym: |
ICSD 202506 |
| |
PDF 22-508 |
| |