According to Wikipedia's 'Abiogenesis' article,
There is still no "standard model" of the origin of life.
It mentions several models or hypotheses, among which is at least one (not very successful) Clay hypothesis (beyond the hypothesis you mentioned in the OP).
The experiment which you mentioned in the OP is mentioned in that Wikipedia article too, in the Protocells section:
A 2012 study led by Armen Mulkidjanian of Germany's University of Osnabrück, suggests that inland pools of condensed and cooled geothermal vapour have the ideal characteristics for the origin of life. Scientists discovered in 2002 that by adding a montmorillonite clay to a solution of fatty acid micelles (lipid spheres), the clay sped up the rate of vesicles formation 100-fold. So this one mineral can get precursors (nucleotides) to spontaneously assemble into RNA and membrane precursors to assemble into membrane.
"Montmorillonite clay" might also help to synthesize RNA:
James Ferris's studies have shown that clay minerals of montmorillonite will catalyze the formation of RNA in aqueous solution, by joining activated mono RNA nucleotides to join together to form longer chains. Although these chains have random sequences, the possibility that one sequence began to non-randomly increase its frequency by increasing the speed of its catalysis is possible to "kick start" biochemical evolution.