There is probably no reason against it.
Orange wood burns very well, it burns quite quickly therefore gives more rapid heat.
no it will catch a your house on fire
No.
No, it is not safe to burn wood in a gas fireplace with a chimney designed for gas.
Check with Martin for an owner's manual. Unless a fireplace is specifically rated as multi-fuel, a gas fireplace cannot safely burn wood.
I do.
No, it is not safe to burn. It is toxic.
Yes.
yes
yes
No. It's illegal.
Its wood isn't it
Yes.