linux - How can I mount dd image of a partition?

I created a dd image of a partition (containing an HFS+ FS) of one of my disks (and not the entire disk) a few days ago using the following command -

dd conv=sync,noerror bs=8k if=/dev/sdc2 of=/path/to/img

How can I mount it? I tried the following but it doesn't work -

mount -o loop,ro -t hfsplus /path/to/img /path/to/mntDir

It gives me

mount: wrong fs type, bad option, bad superblock on /dev/loop1,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail or so

and dmesg | tail gives me -

[5248455.568479] hfs: invalid secondary volume header
[5248455.568494] hfs: unable to find HFS+ superblock
[5248462.674836] hfs: invalid secondary volume header
[5248462.674843] hfs: unable to find HFS+ superblock
[5248550.672105] hfs: invalid secondary volume header
[5248550.672115] hfs: unable to find HFS+ superblock
[5248993.612026] hfs: unable to find HFS+ superblock
[5248998.103385] hfs: unable to find HFS+ superblock
[5249031.441359] hfs: unable to find HFS+ superblock
[5249036.274864] hfs: unable to find HFS+ superblock

Is there something wrong that I am doing?

I tried searching on how to do this but all the results I get only talk about mounting a partition from within a full disk image, using the offset option with mount - none talk about the case where the image itself is that of a partition.

Thanks.

PS: I'm running 64bit Arch Linux, and the partition from the original disk /dev/sdc2 mounts fine.