Lee, thanks for that PDf file! An excellent summary and very much valid here.
The pattern in the original post (OP) of this thread shows clear and sharply profiled laminations, as illustrated in Lee's article. Wootz patterns may resemble the patterns found in the OP but the key difference, at least for me, is the much "softer" appearance of wootz patterns as they blend with the background steel. This is to be expected from the different manner in which bloomery steel is created and worked. Wootz patterns derive from different crystalline structures within the original billet.
Laminated blades are derived from different pieces of iron and steel, thus creating distinct boundaries between the steel pieces. Different structural components in the various pieces give rise to the patterns observed. Many times, such differences in composition give rise to clear margins for the different components, thus distinguishing the pattern-welded forms from wootz.
The OP here is clearly a pattern-welded, laminated construction. There are, however, examples of pattern-welded forms that are more difficult to distinguish from wootz.
Ian.
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