On the wiki page about ore deposits in the section "Generation Stats", it reads:
This confuses me, because the value is referred both as "width" and "radius", but these two are different things. "Width" implies diameter, which is twice the radius. And given that area is pi times the square of the radius, whether we're dealing with width of diameter has large implications for deposit sizes. Does somebody know whether the values are actually radius, as its labeled, or whether its diameter?