What is cnmnc?

Some articles on cnmnc:

Sulfosalt Minerals - Nickel–Strunz Classification -02- Sulfosalts
... IMA-CNMNC proposes a new hierarchical scheme (Mills et al ... Abbreviations "*" - discredited (IMA/CNMNC status) ... "?" - questionable/doubtful (IMA/CNMNC status) ...
Londonite - Nickel–Strunz Classification -06- Borates
... IMA-CNMNC proposes a new hierarchical scheme (Mills et al ... Abbreviations "*" - discredited (IMA/CNMNC status) ... "?" - questionable/doubtful (IMA/CNMNC status) ...