Granite? As in grit? I would not do that. Baby chicks do not need grit until they are taking foods other than chick crumbles, and I wait a few weeks for that. Do you have electrolytes or some room temperature Gatorade? I would get the chick drinking water right away, dipping it’s beak into the water for a half second to get it to swallow. A 6 day old chick might be suffering from shipping stress or failure to thrive. Make sure that it does not have any poop stuck on it’s vent. If there is any, clean it off with warm soapy water and dry with a tissue. Do you have it under a heat source?