Synthesis of molecular sieve SSZ-41

A method of synthesizing a zincoaluminosilicate molecular sieve having the framework structure of SSZ-41, the method comprising:

• (a) preparing a reaction mixture comprising:
• (1) a combined source of silicon oxide and aluminum oxide selected from a FAU framework type zeolite, a colloidal aluminosilicate, or a mixture thereof;
• (2) a source of zinc;
• (3) a source of a Group 1 or Group 2 metal (M);
• (4) a structure directing agent (Q) comprising 1,1′-(1,4-butanediyl)bis-4-aza-1-azoniabicyclo[2.2.2]octane dications;
• (5) hydroxide ions;
• and
• (6) water;
• and
• (b) subjecting the reaction mixture to crystallization conditions sufficient to form crystals of the molecular sieve;
• wherein the reaction mixture has a composition, in terms of molar ratios, as follows:
• SiO2/Al2O3
• 60 to 90
• SiO2/ZnO
• 15 to 40
• M/SiO2
• 0.10 to 0.30
• Q/SiO2
• 0.15 to 0.40
• OH/SiO2
• 0.15 to 0.40
• H2O/SiO2
• 15 to 45.