I recently moved into this house, and am in my first year of burning here, burning whatever I can scrounge. Most of it is cherry I got from one of my neighbors, but I've got a little of a bunch of assorted other stuff also-- dogwood, juniper (aka "virginia ceder"), yellow poplar, yellow pine, ash, and some other stuff that I can't identify. Anyway, after my last load had burned down, one of the splits left a pile of brown ashes. I've never seen this before... they're pretty much always some shade of gray in my experience. Anybody have any idea what could cause this, or am I crazy for thinking ashes are typically gray? Just curious...