greenish tint in black walnut?
This evening a friend dropped by to give me some 8/4 black walnut he salvaged from his farm after a hurricane some 12 years ago. He recalls having a friend of his bring over a portable sawmill and stacking it with stickers in his barn.
After giving it a good going over with a wire brush I eagerly began planing it. As the roughness began to give way I noticed a tinge of green tint in a 3-4 inch area in the outside portion of the heartwood. The more I planed the more green appeared. I've planed a fair amount of walnut but can't recall seeing anything such as this.
Can anyone offer info about what this is. While it is unique, not necessarily what I was looking for. This piece of 8/4 is about 5-6' long and maybe 8-10" wide. My first impression when I picked it up was, "UH-OH, this must have been in the loft and gotten too dry because it is awfully light for walnut." It doesn't appear to have ever been left in the weather although was really dirty.
My best guesses: 1) Mineral stain from soil, 2) Improper drying 3) disease or fungus such as that which can cause maple to be spalted 4) It isn't really black walnut but rather Martian Walnut.
Thanks in advance for any input. Hopefully I can get a picture of this posted, very strange looking.
"Humility is a strange thing, once you think you have it, you have lost it"