Mineralogy Database

Ashcroftine-(Y) Mineral Data

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General Ashcroftine-(Y) Information

Help on Chemical  Formula: Chemical Formula: K5Na5(Y,Ca)12Si28O70(OH)2(CO3)8•8(H2O)
Help on Composition: 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
Help on Empirical Formula: Empirical Formula: K5Na5Y10Ca2Si28O70(CO3)8•8(H2O)
Help on Environment: Environment: In nepheline syenites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1933
Help on Locality: Locality: From Narssarssuk, Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Frederick Noel Ashcroft (1878-1949), benefactor to the British Museum (Natural History), London, England.
Help on Name Pronunciation: Name Pronunciation: Ashcroftine-(Y) + Pronunciation Say ASHCROFTINE-(Y)
Help on Synonym: Synonym: ICSD 202506
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