It looks like oak that has been lacquered (it shines) and possibly stained. There are two main species of American oak - Red Oak & White. I think we can safely discard Red. American White/ Appalachian oak often has a pinkish tint in some (not all) of the boards ans though this is difficult to see once the boards have been finished. American White Oak has a fine grain pattern but this isn't unique to this oak. Other oaks tend to be easier to spot i.e. English oak is usually quite Rustic & pippy with large knots as is a lot of French oak. This picture shows boards that I would certainly regard as Select Grade and there does appear to be a reddish tint in the first picture and at the bottom of the second. When sat you sit select Grade American & Siberian oak side by side it would be reasonably difficult to tell them apart if you removed those boards with the tint in them. There is nothing about the oak pictured here to suggest that it isn't American. You haven't said what it is you are trying to do, are you looking to match it? If so the origin of the oak is going to be less important than matching the grade and managing the issue of staining it correctly to get a match. In doing this you need to bear in mind that over time dark woods tend to get lighter and light woods, such as oak, tend to get darker. It isn't going to be easy so you will need to manage the customers expectation before you take it on. I don't claim to be an expert but I hope this helps.
Yeah helps Andy. Trying to repair a section that was fire damaged. Although it's not old it's a very tough floor and has been installed in a bit of a odd way. We don't want to have to replace the whole lot but at the same time know we will never match the wood perfectly. The whole area will be sanded, stained and lacquered so just want to get the grain as close as possible. As its different wood I'm guessing it will take the stain in a different way!
Merit, Then I would concentrate on matching the grade rather than the origin of the oak. If you are sanding & staining the complete floor you should get a good match and there shouldn't be any difference in the way it takes the stain. The only thing that I know of that they say is different when finishing American oak to European is that American doesn't take being fumed too well, but that isn't going to be an issue here.
