Microcrystalline Hydroxyapatite MCHA (Calcium Powder)

Also known as:
Microcrystalline Hydroxyapatite [MCHA] in North America. 
Ossein Mineral Complex [OMC] in the Subcontinent. 
Ossein Hydroxyapatite Compound [OHC] in Asia. 
Calcium Hydroxyapatite in Europe.

Source: Australian sourced and manufactured.