I'm interested in this (always nice to see a different bit of wood). False Acacia, according to Wikipedia, is Robinia pseudoacacia, otherwise known as Black locust, in the Laburnum family. They are generally regarded as poisonous, and the foliage is certainly toxic to eat. Not sure about the wood. I have some ordinary laburnum and it is hard as a rock when dry. Good carving wood. Would probably burn well, although some people would worry about the smoke thus produced.
Hmm, the plants for a future database says "All parts of the plant (except the flowers) and especially the bark, should be considered to be toxic. The toxins are destroyed by heat". On wood it says "The bark is used to make paper and is a substitute for silk and wool. Trees sucker freely, especially if coppiced, and they can be used for stabilizing banks etc. Wood - close-grained, exceedingly hard, heavy, very strong, resists shock and is very durable in contact with the soil. It weighs 45lb per cubic foot and is used in shipbuilding and for making fence posts, treenails, floors etc. A very good fuel, but it should be used with caution because it flares up and projects sparks"
Seems my rough guesses were reasonable then. Ordinary laburnum is absolutely gorgeous when carved, polished and finished. I would definitely have a go at making something from it, if your tools are sharp enough.
