Ashcroftine-(Y)

Химия

IMA chemistry:: K5Na5Y12Si28O70(OH)2(CO3)8·8H2O
Valence chemistry:: K5Na5Y12Si28O70(OH)2(CO3)8·8H2O

Классификация

Crystal systems:: tetragonal
Space groups:: I4, mmm
Structural group:: Not in a structural group
IMA status:: Approved, Renamed

Происхождение

Country:: Denmark (Greenland)
Published:: 1933
Oldest age Ma:: 1300
Paragenetic modes:: Abiotic, Primary, Stage 4b: Highly evolved igneous rocks, PM35 - Ultra-alkali and agpaitic igneous rocks

Примечания

Hey M H, Bannister F A (1933) Studies on the zeolites. Part IV. Ashcroftine (kalithomsonite of S.G. Gordon). Mineralogical Magazine 23, 305-308 Chemical formula revised: Moore P B, Bennett J M, Louisnathan S J (1969) Ashcroftine is not a zeolite!. Mineralogical Magazine 37, 515-517 Chemical formula revised again: Moore P B, Sen Gupta P K, Schlemper E O, Merlino S (1987) Ashcroftine, ca. K10Na10(Y,Ca)24(OH)4(CO3)16(Si56O140)·16H2O, a structure with enormous polyanions. American Mineralogist 72, 1176-1189 Name changed from ashcroftine: Nickel E H, Mandarino J A (1987) Procedures involving the IMA Commission on New Minerals and Mineral Names and guidelines on mineral nomenclature. American Mineralogist 72, 1031-1042