"More than 98% of tooth enamel consists of carbonated calcium hydroxy-apatite, " says professor A.G.
BBC: By BBC News Online Science Editor Dr David Whitehouse
Apatite, a phosphate, is a key raw material of some fertilisers.
BBC: NEWS | Business | Metals boom sparks Kola nature fears
And fertiliser-maker Akron is preparing to develop apatite fields in the Khibini mountains, an area used for reindeer grazing above the salmon-rich river system that runs south from Lake Imandra.
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