Bustamite is a reddish-brown coloured secondary mineral usually found in manganese-bearing ore bodies. It is closely related to, but is significantly different to rhodonite, bustamite being not quite so dense and also containing calcium. Research Bustamite
Inesite is a secondary mineral of a fleshy pink colour formed in zones of metamorphism and by metasomatism. Inesiteis a hydrous hydrated silicate of calcium, manganese and iron and was confirmed as a distinct species of mineral in 1888, though in 1940 it was suggested that inesite was in fact a calcium-rich variety of rhodonite. Inesite crystals are triclinic, they are prismatic and commonly have a slanted or chisel-shaped termination. Research Inesite
Rhodonite is an often pink or red coloured mineral sometimes polished for use as an ornamental stone. Rhodonite is formed mainly in manganese-bearing metamorphic rocks, especially marble and skarn, which were previously limestone. It is also found in sediments that have been altered by metasomatism. It has the formulae (Mn,Fe,Mg)SiO3 and a relative hardness of 7. Research Rhodonite
 
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