Teapot Identification and Tea Reccommendation

[MisterT]

Hi all !

I have been offered of teapot which seem to be made from Duan Ni Clay.
Could anyone confirm it and give characteristics from the pictures ?

I like to drink Anxi Tieguanyin but after some research, it seems it is a definite no-no with Duan Ni teapots (if it is confirmed this is one) ?

Thanks !