# Search results of SQL query from the Crystallography Open Database # Date and time performed: 2026-03-04T07:24:56+01:00 # Query: # SELECT data.* # FROM # data JOIN jaltnames # ON altname = journal # WHERE # (status is null or status != 'retracted') and # (journal_id IN (SELECT DISTINCT(journal_id) FROM jaltnames WHERE altname LIKE 'Mineralogical Journal') AND volume = 20 AND duplicateof IS NULL AND (status is NULL OR status != 'errors') AND (method is NULL OR method != 'theoretical')) # ORDER BY file asc file,a,siga,b,sigb,c,sigc,alpha,sigalpha,beta,sigbeta,gamma,siggamma,vol,sigvol,celltemp,sigcelltemp,diffrtemp,sigdiffrtemp,cellpressure,sigcellpressure,diffrpressure,sigdiffrpressure,thermalhist,pressurehist,compoundsource,nel,sg,sgHall,sgNumber,commonname,chemname,mineral,formula,calcformula,cellformula,Z,Zprime,acce_code,authors,title,journal,year,volume,issue,firstpage,lastpage,doi,method,radiation,wavelength,radType,radSymbol,Rall,Robs,Rref,wRall,wRobs,wRref,RFsqd,RI,gofall,gofobs,gofgt,gofref,duplicateof,optimal,status,flags,svnrevision,date,time,onhold "9009730","7.8679","","7.8679","","5.0144","","90","","90","","90","","310.411","","","","","","","","","","","","","5","P -4 21 m","P -4 2ab","113","","","Akermanite","- Ca2 Fe0.446 Mg0.554 O7 Si2 -","- Ca2 Fe0.446 Mg0.554 O7 Si2 -","- Ca4 Fe0.892 Mg1.108 O14 Si4 -","2","0.25","","Kusaka, K.; Ohmasa, M.; Hagiya, K.; Iishi, K.; Haga, N.","On variety of the Ca coordination in the incommensurate structure of synthetic iron-bearing akermanite, Ca2(Mg0.55,Fe0.45)Si2O7 Note: Sample is synthetic, this is the structure obtained from a standard refinement","Mineralogical Journal","1998","20","","47","58","10.2465/minerj.20.47","","","","","","","","","","","","","","","","","","","","","has coordinates","291735","2024-05-06","08:06:32","" "9009732","13.2106","","13.2106","","13.721","","90","","90","","90","","2394.59","","","","","","","","","","","","","5","I 41/a :2","-I 4ad","88","","","Ammonioleucite","- Al0.89 K0.34 N0.53 O6 Si2.11 -","- Al0.8898 K0.34 N0.53 O6 Si2.1099 -","- Al14.2368 K5.44 N8.48 O96 Si33.7584 -","16","1","","Yamada, M.; Miyawaki, R.; Nakai, I.; Izumi, F.; Nagashima, K.","A Rietveld analysis of the crystal structure of ammonioleucite","Mineralogical Journal","1998","20","","105","112","10.2465/minerj.20.105","","","","","","","","","","","","","","","","","","","","","has coordinates","285095","2023-07-08","07:47:58",""