"Fine grained. Analyses indicate vittinkiite (R Bottrill in prep)."

I have analysed a few specimens from Woods mine, along with various other minerals, and all the "rhodonite" turned out to have insufficient Ca to be what we now call rhodonite.  Its very unfortunate that rhodonite was renamed to a mineral different to the endmember MnSiO3 that we once took it to be, but I guess the researchers figured that most of the old "rhodonite" contained too much Ca to fit that end member.  I have also analysed a lot of "rhodonites" from Broken Hill (largely rhodonite to ferrorhodonite) and Tasmania (ranging from rhodonite to vittinkiite) and it leads me to believe there is probably complete solid solution between these minerals. Pyroxmangite and bustamite don't form a solid solution with rhodonite group minerals.  I certainly cannot say for sure that rhodonite does not occur at Woods mine, but it all seems very Ca-poor from my work so far. Vittinkiite may well occur at Broken Hill as its more variable, but hasn't been confirmed in my analyses to date - I need to do this. I have a paper in prep but needs a little work yet. 

Rhodonite and ferrorhodonite are now hard to prove without crystal-chemical study, unless they have high Ca and Fe respectively, but vittinkiite is easier to prove if you have a sample with very low Ca.

Re your sample with the large pink crystals in the saccharoidal groundmass, I would love to test a tiny piece of this. The XRD pattern of rhodonite and vittinkiite are essentially indistinguishable, so we need some accurate chemistry, eg. probe analyses. I don't understand how you got an amorphous result on the groundmass; samples like that I tested came back as largely quartz with subordinate vittinkiite and some rhodochrosite. There are some secondary black manganese silicates of variable composition that are effectively amorphous though.  Will be interesting to see what else you have there.