Wrong discussion board I think, feel free to chop this admin and I post in 'technical support'.

Hello,

My first post here so apologies if I dont follow the norms...

I know how to import private keys and addresses into the Bitcoin Core client and have experience in doing so.  I have an alternative mobile wallet however where I can only seem to access the 'master private key' (xprv...).  Is there a way where this master private key can be imported, or is there a way I can identify the private WIF keys for the receiving addresses in the wallet (Mycelium - android)?

Thanks for any help.

Shields6.