A molecular sieve composition comprising at least one intergrown phase of an AFX framework type molecular sieve inserted along the hexagonal axis into {HEAD ~ at least one intergrown phase} of {TAIL ~ a CHA framework type molecular sieve}, said molecular sieve composition synthesized by the method comprising the steps: 
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A molecular sieve composition comprising at least one intergrown phase of an AFX framework type molecular sieve inserted along the hexagonal axis into { HEAD ~ at least one intergrown phase } of { TAIL ~ a CHA framework type molecular sieve } , said molecular sieve composition synthesized by the method comprising the steps :
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH